MASTER Net MASTER Database: GRB210312.87 page

Please use the reference to MASTER DataBase as Lipunov et al., 2010, MASTER Robotic Net, Advances in Astronomy, vol. 2010, p.30L

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GRB coord: ErrorBox (deg): Sys Error (deg):
Sattel : Trigger: Notice:
GRB_Name: trignum: Nights after: FullSky


Name INTEGRAL GRB210312.87
Trignum 9073
Trigger time 2021-03-12 20:52:17.36
Notice time 2021-03-12 20:52:37.419041
Coord, eb (10h 23m 22.09s , +76d 52m 36.7s) , 0.0491667
Max dist: 1 sigma 3 sigma
AGN candidates: Milliquas
r90wise
wiseXgaia
BL Lac candidates: 1 Sigma
3 Sigma

MASTER observatories and transients from them in error-field
Kislovodsk Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Amur Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tunka Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAFA Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
IAC Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
SAAO Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
Tavrida Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)
OAGH Transients (Undef)
(All)
(Yes)
Trans. Difference (Undef)
(All)
(Yes)
(Gal)

You are viewing outdated information, relevant error box is here

All alerts for this trigger
id noticetime coord2000 satel errorbox type trigger seq trig_type links
1567266 2021-03-12 21:39:56.648892 10h 23m 22.36s +76d 52m 15.2s INTEGRAL 0.0333333 alert 9073 2 55 alert
1567235 2021-03-12 20:55:39.169266 10h 23m 21.63s +76d 52m 15.1s INTEGRAL 0.0453333 alert 9073 1 54 alert
1567228 2021-03-12 20:52:37.419041 10h 23m 22.09s +76d 52m 36.7s INTEGRAL 0.0491667 alert 9073 -1 53 alert

DAYS:

MASTER optical transients in this field
Will be published in GCN, ATEL

Synchronous WFC images
Distance datetime coord2000 observatory camera links
50.2 2021-03-12 20:52:02.837 08h 45m 27.00s +27d 59m 58.0s Kislovodsk 29007 Database Kislovodsk
50.2 2021-03-12 20:52:02.84 08h 45m 27.00s +27d 59m 58.0s Kislovodsk 111339 Database Kislovodsk
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2021-03-12 20:52:17 (JD 2459286.369641)

Siderial time 10.760699 h

Ra 10:23:22.09 Dec 76:52:36.70
(155.842042d, 76.876861d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 47.37 Azimuth: 160.50

Sun: Altitude: -9.75 Azimuth: 263.03

Moon: Altitude: -12.66 Azimuth: 270.84

Tunka

Object: Altitude: 54.20 Azimuth: 158.47

Sun: Altitude: -23.90 Azimuth: 242.10

Moon: Altitude: -27.49 Azimuth: 250.28

Kislovodsk

Object: Altitude: 56.58 Azimuth: 175.70

Sun: Altitude: -48.94 Azimuth: 170.05

Moon: Altitude: -56.43 Azimuth: 175.57

Tavrida

Object: Altitude: 57.84 Azimuth: 179.16

Sun: Altitude: -46.31 Azimuth: 157.98

Moon: Altitude: -54.23 Azimuth: 161.27

SAAO

Object: Altitude: -19.48 Azimuth: 182.69

Sun: Altitude: -45.56 Azimuth: 42.44

Moon: Altitude: -41.51 Azimuth: 32.60

IAC

Object: Altitude: 36.44 Azimuth: 192.21

Sun: Altitude: -22.91 Azimuth: 99.27

Moon: Altitude: -29.83 Azimuth: 94.36

Argentina

Object: Altitude: -33.46 Azimuth: 195.47

Sun: Altitude: 25.58 Azimuth: 103.09

Moon: Altitude: 26.00 Azimuth: 93.99

Mexico

Object: Altitude: 20.38 Azimuth: 188.49

Sun: Altitude: 50.63 Azimuth: 33.57

Moon: Altitude: 42.44 Azimuth: 33.72

Ural

Object: Altitude: 67.92 Azimuth: 163.81

Sun: Altitude: -35.41 Azimuth: 192.89

Moon: Altitude: -41.87 Azimuth: 199.36

Vostryakovo

Object: Altitude: 68.40 Azimuth: 176.45

Sun: Altitude: -36.93 Azimuth: 165.91

Moon: Altitude: -44.51 Azimuth: 170.04

Gal. latitude: 37.619168 Gal. longitude: 132.795411

Dist. to Sun: 105.624843

Dist. to Moon: 113.010179

Moon coord.: (348.803525 d, -10.241870 d)

Sun coord.: (352.843412 d, -3.092030 d)

Lunar disk: 0.005144

Lunar phase: 171.774294

Lunar bright limb: 29.562849

No SN in this field

2021-03-12 20:52:37 (JD 2459286.369873)

Siderial time 10.766270 h

Ra 10:23:22.09 Dec 76:52:36.70
(155.842042d, 76.876861d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 47.36 Azimuth: 160.51

Sun: Altitude: -9.70 Azimuth: 263.09

Moon: Altitude: -12.61 Azimuth: 270.90

Tunka

Object: Altitude: 54.18 Azimuth: 158.46

Sun: Altitude: -23.85 Azimuth: 242.18

Moon: Altitude: -27.45 Azimuth: 250.35

Kislovodsk

Object: Altitude: 56.58 Azimuth: 175.67

Sun: Altitude: -48.95 Azimuth: 170.17

Moon: Altitude: -56.43 Azimuth: 175.71

Tavrida

Object: Altitude: 57.84 Azimuth: 179.13

Sun: Altitude: -46.33 Azimuth: 158.09

Moon: Altitude: -54.25 Azimuth: 161.40

SAAO

Object: Altitude: -19.48 Azimuth: 182.67

Sun: Altitude: -45.61 Azimuth: 42.35

Moon: Altitude: -41.55 Azimuth: 32.50

IAC

Object: Altitude: 36.46 Azimuth: 192.20

Sun: Altitude: -22.98 Azimuth: 99.31

Moon: Altitude: -29.90 Azimuth: 94.40

Argentina

Object: Altitude: -33.44 Azimuth: 195.47

Sun: Altitude: 25.51 Azimuth: 103.04

Moon: Altitude: 25.93 Azimuth: 93.95

Mexico

Object: Altitude: 20.39 Azimuth: 188.51

Sun: Altitude: 50.60 Azimuth: 33.69

Moon: Altitude: 42.40 Azimuth: 33.82

Ural

Object: Altitude: 67.91 Azimuth: 163.77

Sun: Altitude: -35.40 Azimuth: 192.99

Moon: Altitude: -41.86 Azimuth: 199.47

Vostryakovo

Object: Altitude: 68.40 Azimuth: 176.40

Sun: Altitude: -36.94 Azimuth: 166.01

Moon: Altitude: -44.51 Azimuth: 170.15

Gal. latitude: 37.619168 Gal. longitude: 132.795411

Dist. to Sun: 105.624737

Dist. to Moon: 113.008887

Moon coord.: (348.806243 d, -10.240724 d)

Sun coord.: (352.843624 d, -3.091938 d)

Lunar disk: 0.005141

Lunar phase: 171.776435

Lunar bright limb: 29.551124

No SN in this field

2021-03-12 21:52:37 (JD 2459286.411539)

Siderial time 11.769008 h

Ra 10:23:22.09 Dec 76:52:36.70
(155.842042d, 76.876861d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 44.31 Azimuth: 162.72

Sun: Altitude: -0.12 Azimuth: 274.67

Moon: Altitude: -3.23 Azimuth: 281.85

Tunka

Object: Altitude: 50.79 Azimuth: 159.00

Sun: Altitude: -15.21 Azimuth: 255.18

Moon: Altitude: -18.55 Azimuth: 262.57

Kislovodsk

Object: Altitude: 55.22 Azimuth: 170.10

Sun: Altitude: -48.63 Azimuth: 192.99

Moon: Altitude: -54.68 Azimuth: 201.00

Tavrida

Object: Altitude: 57.09 Azimuth: 172.94

Sun: Altitude: -48.35 Azimuth: 180.08

Moon: Altitude: -55.16 Azimuth: 186.28

SAAO

Object: Altitude: -19.28 Azimuth: 179.07

Sun: Altitude: -52.41 Azimuth: 21.87

Moon: Altitude: -46.61 Azimuth: 13.78

IAC

Object: Altitude: 38.94 Azimuth: 189.26

Sun: Altitude: -35.80 Azimuth: 108.25

Moon: Altitude: -42.47 Azimuth: 102.98

Argentina

Object: Altitude: -30.04 Azimuth: 195.17

Sun: Altitude: 12.91 Azimuth: 94.44

Moon: Altitude: 13.47 Azimuth: 86.43

Mexico

Object: Altitude: 22.61 Azimuth: 191.28

Sun: Altitude: 41.87 Azimuth: 51.41

Moon: Altitude: 34.30 Azimuth: 48.94

Ural

Object: Altitude: 65.23 Azimuth: 158.47

Sun: Altitude: -32.35 Azimuth: 210.68

Moon: Altitude: -37.88 Azimuth: 217.44

Vostryakovo

Object: Altitude: 67.22 Azimuth: 167.94

Sun: Altitude: -37.60 Azimuth: 184.85

Moon: Altitude: -44.28 Azimuth: 190.25

Gal. latitude: 37.619168 Gal. longitude: 132.795411

Dist. to Sun: 105.605715

Dist. to Moon: 112.775620

Moon coord.: (349.295073 d, -10.034228 d)

Sun coord.: (352.881904 d, -3.075515 d)

Lunar disk: 0.004678

Lunar phase: 172.156124

Lunar bright limb: 27.343058

No SN in this field

2024-12-25 13:31:02 (JD 2460670.063218)

Siderial time 22.328795 h

Ra 10:23:22.09 Dec 76:52:36.70
(155.842042d, 76.876861d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 48.32 Azimuth: 199.96

Sun: Altitude: -54.67 Azimuth: 128.69

Moon: Altitude: -44.23 Azimuth: 231.76

Tunka

Object: Altitude: 44.84 Azimuth: 196.80

Sun: Altitude: -40.28 Azimuth: 103.63

Moon: Altitude: -51.82 Azimuth: 197.64

Kislovodsk

Object: Altitude: 30.65 Azimuth: 181.05

Sun: Altitude: -0.02 Azimuth: 56.69

Moon: Altitude: -39.07 Azimuth: 108.96

Tavrida

Object: Altitude: 31.64 Azimuth: 178.80

Sun: Altitude: 4.30 Azimuth: 50.59

Moon: Altitude: -32.94 Azimuth: 102.51

SAAO

Object: Altitude: -44.76 Azimuth: 174.42

Sun: Altitude: 50.48 Azimuth: 91.72

Moon: Altitude: -7.41 Azimuth: 67.34

IAC

Object: Altitude: 20.31 Azimuth: 168.56

Sun: Altitude: 37.93 Azimuth: 7.62

Moon: Altitude: 8.56 Azimuth: 68.14

Argentina

Object: Altitude: -27.00 Azimuth: 165.96

Sun: Altitude: 48.45 Azimuth: 270.26

Moon: Altitude: 65.79 Azimuth: 130.64

Mexico

Object: Altitude: 41.98 Azimuth: 170.93

Sun: Altitude: -9.68 Azimuth: 291.55

Moon: Altitude: 39.49 Azimuth: 331.62

Ural

Object: Altitude: 44.57 Azimuth: 186.56

Sun: Altitude: -15.59 Azimuth: 70.90

Moon: Altitude: -41.10 Azimuth: 136.60

Vostryakovo

Object: Altitude: 42.26 Azimuth: 179.78

Sun: Altitude: -4.18 Azimuth: 53.50

Moon: Altitude: -32.07 Azimuth: 112.39

Gal. latitude: 37.619168 Gal. longitude: 132.795411

Dist. to Sun: 119.062852

Dist. to Moon: 96.659058

Moon coord.: (209.217581 d, -14.690850 d)

Sun coord.: (274.257334 d, -23.389045 d)

Lunar disk: 0.263336

Lunar phase: 118.250510

Lunar bright limb: 108.996757

No SN in this field
Recent coverage and limits telegrams

 #######################################################################################
#######################################################################################

  ID = 3959
TYPE = 35
DAYS = 1


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the INTEGRAL GRB210312.87 (trigger No 9073,10h 23m 22.36s , +76d 52m 15.2s, R=0.0333333) errorbox  27 sec after notice time and 38 sec after trigger time at 2021-03-12 20:52:58 UT, with upper limit up to  19.6 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -49.6 deg. 

The galactic latitude b = 38 deg., longitude l = 133 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1567266

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      43 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      63 |   MASTER-Kislovodsk |  P- |    50 | 16.8 |  Coadd 
     433 |   MASTER-Kislovodsk |  P- |   790 | 17.4 |  Coadd 
      43 |   MASTER-Kislovodsk |  P| |    10 | 15.8 |        
      53 |   MASTER-Kislovodsk |  P| |    30 | 16.7 |  Coadd 
     398 |   MASTER-Kislovodsk |  P| |   720 | 19.2 |  Coadd 
      44 |             MASTER- |   C |    10 | 18.6 |        
      44 |             MASTER- |   C |    10 | 18.7 |        
      61 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      61 |   MASTER-Kislovodsk |  P| |    10 | 15.9 |        
      67 |             MASTER- |   C |    10 | 18.3 |        
      68 |             MASTER- |   C |    10 | 18.7 |        
      79 |   MASTER-Kislovodsk |  P- |    10 | 14.7 |        
      79 |   MASTER-Kislovodsk |  P| |    10 | 16.0 |        
      98 |             MASTER- |   C |    20 | 18.9 |        
      98 |             MASTER- |   C |    20 | 18.9 |        
     105 |   MASTER-Kislovodsk |  P- |    20 | 16.3 |        
     105 |   MASTER-Kislovodsk |  P| |    20 | 16.8 |        
     130 |   MASTER-Kislovodsk |  P| |    70 | 17.6 |  Coadd 
     131 |             MASTER- |   C |    20 | 18.7 |        
     131 |             MASTER- |   C |    20 | 19.0 |        
     133 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     133 |   MASTER-Kislovodsk |  P| |    20 | 16.6 |        
     166 |   MASTER-Kislovodsk |  P- |    30 | 16.7 |        
     211 |   MASTER-Kislovodsk |  P- |   120 | 17.3 |  Coadd 
     166 |   MASTER-Kislovodsk |  P| |    30 | 17.3 |        
     171 |             MASTER- |   C |    30 | 19.0 |        
     171 |             MASTER- |   C |    30 | 19.0 |        
     209 |   MASTER-Kislovodsk |  P- |    40 | 16.7 |        
     209 |   MASTER-Kislovodsk |  P| |    40 | 17.4 |        
     264 |   MASTER-Kislovodsk |  P| |   150 | 18.2 |  Coadd 
     219 |             MASTER- |   C |    40 | 18.9 |        
     220 |             MASTER- |   C |    40 | 19.2 |        
     262 |   MASTER-Kislovodsk |  P- |    50 | 16.7 |        
     262 |   MASTER-Kislovodsk |  P| |    50 | 17.5 |        
     278 |             MASTER- |   C |    50 | 19.2 |        
     278 |             MASTER- |   C |    50 | 19.0 |        
     325 |   MASTER-Kislovodsk |  P- |    60 | 16.8 |        
     405 |   MASTER-Kislovodsk |  P- |   220 | 17.7 |  Coadd 
     325 |   MASTER-Kislovodsk |  P| |    60 | 17.5 |        
     346 |             MASTER- |   C |    60 | 19.1 |        
     346 |             MASTER- |   C |    60 | 19.1 |        
     398 |   MASTER-Kislovodsk |  P- |    70 | 16.7 |        
     398 |   MASTER-Kislovodsk |  P| |    70 | 17.7 |        
     518 |   MASTER-Kislovodsk |  P| |   310 | 19.2 |  Coadd 
     418 |             MASTER- |   C |    60 | 19.0 |        
     418 |             MASTER- |   C |    60 | 19.1 |        
     486 |   MASTER-Kislovodsk |  P- |    90 | 17.0 |        
     492 |             MASTER- |   C |    60 | 19.0 |        
     492 |             MASTER- |   C |    60 | 18.9 |        
     564 |             MASTER- |   C |    60 | 19.1 |        
     564 |             MASTER- |   C |    60 | 19.1 |        
     594 |   MASTER-Kislovodsk |  P- |   110 | 17.4 |        
     739 |   MASTER-Kislovodsk |  P- |   400 | 18.5 |  Coadd 
     594 |   MASTER-Kislovodsk |  P| |   110 | 18.5 |        
     638 |             MASTER- |   C |    60 | 19.3 |        
     638 |             MASTER- |   C |    60 | 18.9 |        
     722 |   MASTER-Kislovodsk |  P- |   130 | 17.7 |        
     722 |   MASTER-Kislovodsk |  P| |   130 | 18.5 |        
     712 |             MASTER- |   C |    60 | 19.2 |        
     712 |             MASTER- |   C |    60 | 19.2 |        
     785 |             MASTER- |   C |    60 | 19.0 |        
     785 |             MASTER- |   C |    60 | 18.9 |        
     875 |   MASTER-Kislovodsk |  P- |   160 | 17.9 |        
     875 |   MASTER-Kislovodsk |  P| |   160 | 18.9 |        
     856 |             MASTER- |   C |    60 | 19.2 |        
     856 |             MASTER- |   C |    60 | 19.0 |        
     929 |             MASTER- |   C |    60 | 19.0 |        
     929 |             MASTER- |   C |    60 | 19.1 |        
    1053 |   MASTER-Kislovodsk |  P- |   180 | 18.1 |        
    1233 |   MASTER-Kislovodsk |  P- |   540 | 18.7 |  Coadd 
    1863 |   MASTER-Kislovodsk |  P- |  1800 | 18.7 |  Coadd 
    1053 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    1863 |   MASTER-Kislovodsk |  P| |  1800 | 19.6 |  Coadd 
    1002 |             MASTER- |   C |    60 | 19.0 |        
    1002 |             MASTER- |   C |    60 | 19.0 |        
    1075 |             MASTER- |   C |    60 | 19.0 |        
    1075 |             MASTER- |   C |    60 | 19.1 |        
    1148 |             MASTER- |   C |    60 | 19.0 |        
    1148 |             MASTER- |   C |    60 | 19.0 |        
    1254 |   MASTER-Kislovodsk |  P- |   180 | 17.9 |        
    1254 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    1221 |             MASTER- |   C |    60 | 19.0 |        
    1221 |             MASTER- |   C |    60 | 18.7 |        
    1295 |             MASTER- |   C |    60 | 19.0 |        
    1295 |             MASTER- |   C |    60 | 19.0 |        
    1368 |             MASTER- |   C |    60 | 19.0 |        
    1368 |             MASTER- |   C |    60 | 19.0 |        
    1455 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    1455 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    1635 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    1440 |             MASTER- |   C |    60 | 18.9 |        
    1440 |             MASTER- |   C |    60 | 18.9 |        
    1514 |             MASTER- |   C |    60 | 19.1 |        
    1514 |             MASTER- |   C |    60 | 18.9 |        
    1587 |             MASTER- |   C |    60 | 19.0 |        
    1587 |             MASTER- |   C |    60 | 19.1 |        
    1656 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    1836 |   MASTER-Kislovodsk |  P- |   540 | 18.3 |  Coadd 
    1656 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    1660 |             MASTER- |   C |    60 | 18.9 |        
    1660 |             MASTER- |   C |    60 | 19.1 |        
    1732 |             MASTER- |   C |    60 | 18.9 |        
    1732 |             MASTER- |   C |    60 | 19.1 |        
    1857 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    1857 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    1807 |             MASTER- |   C |    60 | 18.9 |        
    1807 |             MASTER- |   C |    60 | 19.2 |        
    1880 |             MASTER- |   C |    60 | 18.7 |        
    1880 |             MASTER- |   C |    60 | 18.8 |        
    1953 |             MASTER- |   C |    60 | 18.9 |        
    1953 |             MASTER- |   C |    60 | 18.8 |        
    2057 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2057 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    2237 |   MASTER-Kislovodsk |  P| |   540 | 19.3 |  Coadd 
    2025 |             MASTER- |   C |    60 | 19.0 |        
    2025 |             MASTER- |   C |    60 | 18.9 |        
    2099 |             MASTER- |   C |    60 | 19.0 |        
    2100 |             MASTER- |   C |    60 | 19.0 |        
    2174 |             MASTER- |   C |    60 | 19.1 |        
    2174 |             MASTER- |   C |    60 | 19.0 |        
    2258 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    2438 |   MASTER-Kislovodsk |  P- |   540 | 18.3 |  Coadd 
    2258 |   MASTER-Kislovodsk |  P| |   180 | 18.4 |        
    2247 |             MASTER- |   C |    60 | 18.8 |        
    2248 |             MASTER- |   C |    60 | 19.0 |        
    2323 |             MASTER- |   C |    60 | 19.0 |        
    2323 |             MASTER- |   C |    60 | 18.9 |        
    2397 |             MASTER- |   C |    60 | 19.0 |        
    2397 |             MASTER- |   C |    60 | 19.0 |        
    2459 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2459 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    2469 |             MASTER- |   C |    60 | 19.1 |        
    2469 |             MASTER- |   C |    60 | 19.3 |        
    2541 |             MASTER- |   C |    60 | 19.0 |        
    2542 |             MASTER- |   C |    60 | 19.1 |        
    2661 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2661 |   MASTER-Kislovodsk |  P| |   180 | 18.6 |        
    2841 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    2613 |             MASTER- |   C |    60 | 19.1 |        
    2613 |             MASTER- |   C |    60 | 19.1 |        
    2688 |             MASTER- |   C |    60 | 19.1 |        
    2688 |             MASTER- |   C |    60 | 18.8 |        
    2760 |             MASTER- |   C |    60 | 19.2 |        
    2760 |             MASTER- |   C |    60 | 19.1 |        
    2862 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    3042 |   MASTER-Kislovodsk |  P- |   540 | 18.5 |  Coadd 
    2862 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    2833 |             MASTER- |   C |    60 | 19.1 |        
    2833 |             MASTER- |   C |    60 | 18.9 |        
    2906 |             MASTER- |   C |    60 | 19.0 |        
    2906 |             MASTER- |   C |    60 | 19.0 |        
    2980 |             MASTER- |   C |    60 | 19.0 |        
    2980 |             MASTER- |   C |    60 | 19.2 |        
    3063 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3873 |   MASTER-Kislovodsk |  P- |  1800 | 18.9 |  Coadd 
    3063 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3873 |   MASTER-Kislovodsk |  P| |  1800 | 19.6 |  Coadd 
    3053 |             MASTER- |   C |    60 | 19.3 |        
    3053 |             MASTER- |   C |    60 | 19.0 |        
    3126 |             MASTER- |   C |    60 | 19.2 |        
    3126 |             MASTER- |   C |    60 | 19.0 |        
    3198 |             MASTER- |   C |    60 | 19.2 |        
    3198 |             MASTER- |   C |    60 | 19.3 |        
    3264 |   MASTER-Kislovodsk |  P- |   180 | 17.9 |        
    3264 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3444 |   MASTER-Kislovodsk |  P| |   540 | 19.6 |  Coadd 
    3271 |             MASTER- |   C |    60 | 18.9 |        
    3271 |             MASTER- |   C |    60 | 19.1 |        
    3343 |             MASTER- |   C |    60 | 18.6 |        
    3343 |             MASTER- |   C |    60 | 18.7 |        
    3465 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3645 |   MASTER-Kislovodsk |  P- |   540 | 18.5 |  Coadd 
    3465 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3414 |             MASTER- |   C |    60 | 18.8 |        
    3414 |             MASTER- |   C |    60 | 18.9 |        
    3486 |             MASTER- |   C |    60 | 18.4 |        
    3486 |             MASTER- |   C |    60 | 18.7 |        
    3559 |             MASTER- |   C |    60 | 18.7 |        
    3559 |             MASTER- |   C |    60 | 18.8 |        
    3666 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3666 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    3632 |             MASTER- |   C |    60 | 18.0 |        
    3632 |             MASTER- |   C |    60 | 18.2 |        
    3704 |             MASTER- |   C |    60 | 18.3 |        
    3704 |             MASTER- |   C |    60 | 18.6 |        
    3783 |             MASTER- |   C |    60 | 18.1 |        
    3783 |             MASTER- |   C |    60 | 18.5 |        
    3867 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    3867 |   MASTER-Kislovodsk |  P| |   180 | 18.8 |        
    4047 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    3854 |             MASTER- |   C |    60 | 17.8 |        
    3854 |             MASTER- |   C |    60 | 18.3 |        
    3929 |             MASTER- |   C |    60 | 18.1 |        
    3929 |             MASTER- |   C |    60 | 18.4 |        
    4002 |             MASTER- |   C |    60 | 17.6 |        
    4002 |             MASTER- |   C |    60 | 18.3 |        
    4068 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    4248 |   MASTER-Kislovodsk |  P- |   540 | 18.4 |  Coadd 
    4068 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    4075 |             MASTER- |   C |    60 | 17.4 |        
    4076 |             MASTER- |   C |    60 | 17.7 |        
    4148 |             MASTER- |   C |    60 | 16.8 |        
    4148 |             MASTER- |   C |    60 | 17.3 |        
    4269 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    4269 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    4219 |             MASTER- |   C |    60 | 16.4 |        
    4219 |             MASTER- |   C |    60 | 16.8 |        
    4291 |             MASTER- |   C |    60 | 16.6 |        
    4291 |             MASTER- |   C |    60 | 16.8 |        
    4369 |             MASTER- |   C |    60 | 16.6 |        
    4369 |             MASTER- |   C |    60 | 17.0 |        
    4469 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    4469 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    4649 |   MASTER-Kislovodsk |  P| |   540 | 19.1 |  Coadd 
    4443 |             MASTER- |   C |    60 | 16.5 |        
    4443 |             MASTER- |   C |    60 | 16.7 |        
    4518 |             MASTER- |   C |    60 | 16.0 |        
    4670 |   MASTER-Kislovodsk |  P- |   180 | 17.3 |        
    4850 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    4670 |   MASTER-Kislovodsk |  P| |   180 | 18.4 |        
    4871 |   MASTER-Kislovodsk |  P- |   180 | 16.9 |        
    4871 |   MASTER-Kislovodsk |  P| |   180 | 17.9 |        
    5072 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    5882 |   MASTER-Kislovodsk |  P- |  1800 | 17.5 |  Coadd 
    5072 |   MASTER-Kislovodsk |  P| |   180 | 17.4 |        
    5252 |   MASTER-Kislovodsk |  P| |   540 | 18.0 |  Coadd 
    5882 |   MASTER-Kislovodsk |  P| |  1800 | 18.5 |  Coadd 
    5272 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    5452 |   MASTER-Kislovodsk |  P- |   540 | 17.3 |  Coadd 
    5272 |   MASTER-Kislovodsk |  P| |   180 | 17.3 |        
    5474 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    5474 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    5675 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    5675 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    5855 |   MASTER-Kislovodsk |  P| |   540 | 18.3 |  Coadd 
    5876 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    6056 |   MASTER-Kislovodsk |  P- |   540 | 17.3 |  Coadd 
    5876 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    6077 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    6077 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    6278 |   MASTER-Kislovodsk |  P- |   180 | 16.4 |        
    6278 |   MASTER-Kislovodsk |  P| |   180 | 17.4 |        
    6458 |   MASTER-Kislovodsk |  P| |   540 | 18.3 |  Coadd 
    6479 |   MASTER-Kislovodsk |  P- |   180 | 16.0 |        
    6659 |   MASTER-Kislovodsk |  P- |   540 | 17.5 |  Coadd 
    6479 |   MASTER-Kislovodsk |  P| |   180 | 16.7 |        
    6680 |   MASTER-Kislovodsk |  P- |   180 | 17.2 |        
    6680 |   MASTER-Kislovodsk |  P| |   180 | 18.2 |        
    6881 |   MASTER-Kislovodsk |  P- |   180 | 17.3 |        
    6881 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    7061 |   MASTER-Kislovodsk |  P| |   540 | 19.2 |  Coadd 
    7082 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    7262 |   MASTER-Kislovodsk |  P- |   540 | 18.2 |  Coadd 
    7892 |   MASTER-Kislovodsk |  P- |  1800 | 18.5 |  Coadd 
    7082 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    7892 |   MASTER-Kislovodsk |  P| |  1800 | 19.4 |  Coadd 
    7283 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    7283 |   MASTER-Kislovodsk |  P| |   180 | 18.8 |        
    7483 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    7483 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    7663 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    7685 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    7865 |   MASTER-Kislovodsk |  P- |   540 | 17.8 |  Coadd 
    7685 |   MASTER-Kislovodsk |  P| |   180 | 18.6 |        
    7886 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    7886 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    8087 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    8087 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    8267 |   MASTER-Kislovodsk |  P| |   540 | 18.5 |  Coadd 
    8287 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    8467 |   MASTER-Kislovodsk |  P- |   540 | 17.8 |  Coadd 
    8287 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    8489 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    8489 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    8690 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    8690 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    8870 |   MASTER-Kislovodsk |  P| |   540 | 18.5 |  Coadd 
    8890 |   MASTER-Kislovodsk |  P- |   180 | 16.8 |        
    9070 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    8890 |   MASTER-Kislovodsk |  P| |   180 | 17.8 |        
    9091 |   MASTER-Kislovodsk |  P- |   180 | 16.8 |        
    9091 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    9292 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    9292 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    9472 |   MASTER-Kislovodsk |  P| |   540 | 18.0 |  Coadd 
    9493 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    9673 |   MASTER-Kislovodsk |  P- |   540 | 16.3 |  Coadd 
    9493 |   MASTER-Kislovodsk |  P| |   180 | 17.3 |        
    9694 |   MASTER-Kislovodsk |  P- |   180 | 15.5 |        
    9694 |   MASTER-Kislovodsk |  P| |   180 | 16.0 |        
    9895 |   MASTER-Kislovodsk |  P- |   180 | 14.3 |        
    9896 |   MASTER-Kislovodsk |  P| |   180 | 15.0 |        
   10096 |   MASTER-Kislovodsk |  P- |   180 | 15.2 |        
   10097 |   MASTER-Kislovodsk |  P| |   180 | 15.8 |        
   10297 |   MASTER-Kislovodsk |  P- |   180 | 13.0 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3958
TYPE = 35
DAYS = 0.5


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the INTEGRAL GRB210312.87 (trigger No 9073,10h 23m 22.36s , +76d 52m 15.2s, R=0.0333333) errorbox  27 sec after notice time and 38 sec after trigger time at 2021-03-12 20:52:58 UT, with upper limit up to  19.6 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -49.6 deg. 

The galactic latitude b = 38 deg., longitude l = 133 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1567266

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      43 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      63 |   MASTER-Kislovodsk |  P- |    50 | 16.8 |  Coadd 
     433 |   MASTER-Kislovodsk |  P- |   790 | 17.4 |  Coadd 
      43 |   MASTER-Kislovodsk |  P| |    10 | 15.8 |        
      53 |   MASTER-Kislovodsk |  P| |    30 | 16.7 |  Coadd 
     398 |   MASTER-Kislovodsk |  P| |   720 | 19.2 |  Coadd 
      44 |             MASTER- |   C |    10 | 18.6 |        
      44 |             MASTER- |   C |    10 | 18.7 |        
      61 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      61 |   MASTER-Kislovodsk |  P| |    10 | 15.9 |        
      67 |             MASTER- |   C |    10 | 18.3 |        
      68 |             MASTER- |   C |    10 | 18.7 |        
      79 |   MASTER-Kislovodsk |  P- |    10 | 14.7 |        
      79 |   MASTER-Kislovodsk |  P| |    10 | 16.0 |        
      98 |             MASTER- |   C |    20 | 18.9 |        
      98 |             MASTER- |   C |    20 | 18.9 |        
     105 |   MASTER-Kislovodsk |  P- |    20 | 16.3 |        
     105 |   MASTER-Kislovodsk |  P| |    20 | 16.8 |        
     130 |   MASTER-Kislovodsk |  P| |    70 | 17.6 |  Coadd 
     131 |             MASTER- |   C |    20 | 18.7 |        
     131 |             MASTER- |   C |    20 | 19.0 |        
     133 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     133 |   MASTER-Kislovodsk |  P| |    20 | 16.6 |        
     166 |   MASTER-Kislovodsk |  P- |    30 | 16.7 |        
     211 |   MASTER-Kislovodsk |  P- |   120 | 17.3 |  Coadd 
     166 |   MASTER-Kislovodsk |  P| |    30 | 17.3 |        
     171 |             MASTER- |   C |    30 | 19.0 |        
     171 |             MASTER- |   C |    30 | 19.0 |        
     209 |   MASTER-Kislovodsk |  P- |    40 | 16.7 |        
     209 |   MASTER-Kislovodsk |  P| |    40 | 17.4 |        
     264 |   MASTER-Kislovodsk |  P| |   150 | 18.2 |  Coadd 
     219 |             MASTER- |   C |    40 | 18.9 |        
     220 |             MASTER- |   C |    40 | 19.2 |        
     262 |   MASTER-Kislovodsk |  P- |    50 | 16.7 |        
     262 |   MASTER-Kislovodsk |  P| |    50 | 17.5 |        
     278 |             MASTER- |   C |    50 | 19.2 |        
     278 |             MASTER- |   C |    50 | 19.0 |        
     325 |   MASTER-Kislovodsk |  P- |    60 | 16.8 |        
     405 |   MASTER-Kislovodsk |  P- |   220 | 17.7 |  Coadd 
     325 |   MASTER-Kislovodsk |  P| |    60 | 17.5 |        
     346 |             MASTER- |   C |    60 | 19.1 |        
     346 |             MASTER- |   C |    60 | 19.1 |        
     398 |   MASTER-Kislovodsk |  P- |    70 | 16.7 |        
     398 |   MASTER-Kislovodsk |  P| |    70 | 17.7 |        
     518 |   MASTER-Kislovodsk |  P| |   310 | 19.2 |  Coadd 
     418 |             MASTER- |   C |    60 | 19.0 |        
     418 |             MASTER- |   C |    60 | 19.1 |        
     486 |   MASTER-Kislovodsk |  P- |    90 | 17.0 |        
     492 |             MASTER- |   C |    60 | 19.0 |        
     492 |             MASTER- |   C |    60 | 18.9 |        
     564 |             MASTER- |   C |    60 | 19.1 |        
     564 |             MASTER- |   C |    60 | 19.1 |        
     594 |   MASTER-Kislovodsk |  P- |   110 | 17.4 |        
     739 |   MASTER-Kislovodsk |  P- |   400 | 18.5 |  Coadd 
     594 |   MASTER-Kislovodsk |  P| |   110 | 18.5 |        
     638 |             MASTER- |   C |    60 | 19.3 |        
     638 |             MASTER- |   C |    60 | 18.9 |        
     722 |   MASTER-Kislovodsk |  P- |   130 | 17.7 |        
     722 |   MASTER-Kislovodsk |  P| |   130 | 18.5 |        
     712 |             MASTER- |   C |    60 | 19.2 |        
     712 |             MASTER- |   C |    60 | 19.2 |        
     785 |             MASTER- |   C |    60 | 19.0 |        
     785 |             MASTER- |   C |    60 | 18.9 |        
     875 |   MASTER-Kislovodsk |  P- |   160 | 17.9 |        
     875 |   MASTER-Kislovodsk |  P| |   160 | 18.9 |        
     856 |             MASTER- |   C |    60 | 19.2 |        
     856 |             MASTER- |   C |    60 | 19.0 |        
     929 |             MASTER- |   C |    60 | 19.0 |        
     929 |             MASTER- |   C |    60 | 19.1 |        
    1053 |   MASTER-Kislovodsk |  P- |   180 | 18.1 |        
    1233 |   MASTER-Kislovodsk |  P- |   540 | 18.7 |  Coadd 
    1863 |   MASTER-Kislovodsk |  P- |  1800 | 18.7 |  Coadd 
    1053 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    1863 |   MASTER-Kislovodsk |  P| |  1800 | 19.6 |  Coadd 
    1002 |             MASTER- |   C |    60 | 19.0 |        
    1002 |             MASTER- |   C |    60 | 19.0 |        
    1075 |             MASTER- |   C |    60 | 19.0 |        
    1075 |             MASTER- |   C |    60 | 19.1 |        
    1148 |             MASTER- |   C |    60 | 19.0 |        
    1148 |             MASTER- |   C |    60 | 19.0 |        
    1254 |   MASTER-Kislovodsk |  P- |   180 | 17.9 |        
    1254 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    1221 |             MASTER- |   C |    60 | 19.0 |        
    1221 |             MASTER- |   C |    60 | 18.7 |        
    1295 |             MASTER- |   C |    60 | 19.0 |        
    1295 |             MASTER- |   C |    60 | 19.0 |        
    1368 |             MASTER- |   C |    60 | 19.0 |        
    1368 |             MASTER- |   C |    60 | 19.0 |        
    1455 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    1455 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    1635 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    1440 |             MASTER- |   C |    60 | 18.9 |        
    1440 |             MASTER- |   C |    60 | 18.9 |        
    1514 |             MASTER- |   C |    60 | 19.1 |        
    1514 |             MASTER- |   C |    60 | 18.9 |        
    1587 |             MASTER- |   C |    60 | 19.0 |        
    1587 |             MASTER- |   C |    60 | 19.1 |        
    1656 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    1836 |   MASTER-Kislovodsk |  P- |   540 | 18.3 |  Coadd 
    1656 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    1660 |             MASTER- |   C |    60 | 18.9 |        
    1660 |             MASTER- |   C |    60 | 19.1 |        
    1732 |             MASTER- |   C |    60 | 18.9 |        
    1732 |             MASTER- |   C |    60 | 19.1 |        
    1857 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    1857 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    1807 |             MASTER- |   C |    60 | 18.9 |        
    1807 |             MASTER- |   C |    60 | 19.2 |        
    1880 |             MASTER- |   C |    60 | 18.7 |        
    1880 |             MASTER- |   C |    60 | 18.8 |        
    1953 |             MASTER- |   C |    60 | 18.9 |        
    1953 |             MASTER- |   C |    60 | 18.8 |        
    2057 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2057 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    2237 |   MASTER-Kislovodsk |  P| |   540 | 19.3 |  Coadd 
    2025 |             MASTER- |   C |    60 | 19.0 |        
    2025 |             MASTER- |   C |    60 | 18.9 |        
    2099 |             MASTER- |   C |    60 | 19.0 |        
    2100 |             MASTER- |   C |    60 | 19.0 |        
    2174 |             MASTER- |   C |    60 | 19.1 |        
    2174 |             MASTER- |   C |    60 | 19.0 |        
    2258 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    2438 |   MASTER-Kislovodsk |  P- |   540 | 18.3 |  Coadd 
    2258 |   MASTER-Kislovodsk |  P| |   180 | 18.4 |        
    2247 |             MASTER- |   C |    60 | 18.8 |        
    2248 |             MASTER- |   C |    60 | 19.0 |        
    2323 |             MASTER- |   C |    60 | 19.0 |        
    2323 |             MASTER- |   C |    60 | 18.9 |        
    2397 |             MASTER- |   C |    60 | 19.0 |        
    2397 |             MASTER- |   C |    60 | 19.0 |        
    2459 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2459 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    2469 |             MASTER- |   C |    60 | 19.1 |        
    2469 |             MASTER- |   C |    60 | 19.3 |        
    2541 |             MASTER- |   C |    60 | 19.0 |        
    2542 |             MASTER- |   C |    60 | 19.1 |        
    2661 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2661 |   MASTER-Kislovodsk |  P| |   180 | 18.6 |        
    2841 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    2613 |             MASTER- |   C |    60 | 19.1 |        
    2613 |             MASTER- |   C |    60 | 19.1 |        
    2688 |             MASTER- |   C |    60 | 19.1 |        
    2688 |             MASTER- |   C |    60 | 18.8 |        
    2760 |             MASTER- |   C |    60 | 19.2 |        
    2760 |             MASTER- |   C |    60 | 19.1 |        
    2862 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    3042 |   MASTER-Kislovodsk |  P- |   540 | 18.5 |  Coadd 
    2862 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    2833 |             MASTER- |   C |    60 | 19.1 |        
    2833 |             MASTER- |   C |    60 | 18.9 |        
    2906 |             MASTER- |   C |    60 | 19.0 |        
    2906 |             MASTER- |   C |    60 | 19.0 |        
    2980 |             MASTER- |   C |    60 | 19.0 |        
    2980 |             MASTER- |   C |    60 | 19.2 |        
    3063 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3873 |   MASTER-Kislovodsk |  P- |  1800 | 18.9 |  Coadd 
    3063 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3873 |   MASTER-Kislovodsk |  P| |  1800 | 19.6 |  Coadd 
    3053 |             MASTER- |   C |    60 | 19.3 |        
    3053 |             MASTER- |   C |    60 | 19.0 |        
    3126 |             MASTER- |   C |    60 | 19.2 |        
    3126 |             MASTER- |   C |    60 | 19.0 |        
    3198 |             MASTER- |   C |    60 | 19.2 |        
    3198 |             MASTER- |   C |    60 | 19.3 |        
    3264 |   MASTER-Kislovodsk |  P- |   180 | 17.9 |        
    3264 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3444 |   MASTER-Kislovodsk |  P| |   540 | 19.6 |  Coadd 
    3271 |             MASTER- |   C |    60 | 18.9 |        
    3271 |             MASTER- |   C |    60 | 19.1 |        
    3343 |             MASTER- |   C |    60 | 18.6 |        
    3343 |             MASTER- |   C |    60 | 18.7 |        
    3465 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3645 |   MASTER-Kislovodsk |  P- |   540 | 18.5 |  Coadd 
    3465 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3414 |             MASTER- |   C |    60 | 18.8 |        
    3414 |             MASTER- |   C |    60 | 18.9 |        
    3486 |             MASTER- |   C |    60 | 18.4 |        
    3486 |             MASTER- |   C |    60 | 18.7 |        
    3559 |             MASTER- |   C |    60 | 18.7 |        
    3559 |             MASTER- |   C |    60 | 18.8 |        
    3666 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3666 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    3632 |             MASTER- |   C |    60 | 18.0 |        
    3632 |             MASTER- |   C |    60 | 18.2 |        
    3704 |             MASTER- |   C |    60 | 18.3 |        
    3704 |             MASTER- |   C |    60 | 18.6 |        
    3783 |             MASTER- |   C |    60 | 18.1 |        
    3783 |             MASTER- |   C |    60 | 18.5 |        
    3867 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    3867 |   MASTER-Kislovodsk |  P| |   180 | 18.8 |        
    4047 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    3854 |             MASTER- |   C |    60 | 17.8 |        
    3854 |             MASTER- |   C |    60 | 18.3 |        
    3929 |             MASTER- |   C |    60 | 18.1 |        
    3929 |             MASTER- |   C |    60 | 18.4 |        
    4002 |             MASTER- |   C |    60 | 17.6 |        
    4002 |             MASTER- |   C |    60 | 18.3 |        
    4068 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    4248 |   MASTER-Kislovodsk |  P- |   540 | 18.4 |  Coadd 
    4068 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    4075 |             MASTER- |   C |    60 | 17.4 |        
    4076 |             MASTER- |   C |    60 | 17.7 |        
    4148 |             MASTER- |   C |    60 | 16.8 |        
    4148 |             MASTER- |   C |    60 | 17.3 |        
    4269 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    4269 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    4219 |             MASTER- |   C |    60 | 16.4 |        
    4219 |             MASTER- |   C |    60 | 16.8 |        
    4291 |             MASTER- |   C |    60 | 16.6 |        
    4291 |             MASTER- |   C |    60 | 16.8 |        
    4369 |             MASTER- |   C |    60 | 16.6 |        
    4369 |             MASTER- |   C |    60 | 17.0 |        
    4469 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    4469 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    4649 |   MASTER-Kislovodsk |  P| |   540 | 19.1 |  Coadd 
    4443 |             MASTER- |   C |    60 | 16.5 |        
    4443 |             MASTER- |   C |    60 | 16.7 |        
    4518 |             MASTER- |   C |    60 | 16.0 |        
    4670 |   MASTER-Kislovodsk |  P- |   180 | 17.3 |        
    4850 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    4670 |   MASTER-Kislovodsk |  P| |   180 | 18.4 |        
    4871 |   MASTER-Kislovodsk |  P- |   180 | 16.9 |        
    4871 |   MASTER-Kislovodsk |  P| |   180 | 17.9 |        
    5072 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    5882 |   MASTER-Kislovodsk |  P- |  1800 | 17.5 |  Coadd 
    5072 |   MASTER-Kislovodsk |  P| |   180 | 17.4 |        
    5252 |   MASTER-Kislovodsk |  P| |   540 | 18.0 |  Coadd 
    5882 |   MASTER-Kislovodsk |  P| |  1800 | 18.5 |  Coadd 
    5272 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    5452 |   MASTER-Kislovodsk |  P- |   540 | 17.3 |  Coadd 
    5272 |   MASTER-Kislovodsk |  P| |   180 | 17.3 |        
    5474 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    5474 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    5675 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    5675 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    5855 |   MASTER-Kislovodsk |  P| |   540 | 18.3 |  Coadd 
    5876 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    6056 |   MASTER-Kislovodsk |  P- |   540 | 17.3 |  Coadd 
    5876 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    6077 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    6077 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    6278 |   MASTER-Kislovodsk |  P- |   180 | 16.4 |        
    6278 |   MASTER-Kislovodsk |  P| |   180 | 17.4 |        
    6458 |   MASTER-Kislovodsk |  P| |   540 | 18.3 |  Coadd 
    6479 |   MASTER-Kislovodsk |  P- |   180 | 16.0 |        
    6659 |   MASTER-Kislovodsk |  P- |   540 | 17.5 |  Coadd 
    6479 |   MASTER-Kislovodsk |  P| |   180 | 16.7 |        
    6680 |   MASTER-Kislovodsk |  P- |   180 | 17.2 |        
    6680 |   MASTER-Kislovodsk |  P| |   180 | 18.2 |        
    6881 |   MASTER-Kislovodsk |  P- |   180 | 17.3 |        
    6881 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    7061 |   MASTER-Kislovodsk |  P| |   540 | 19.2 |  Coadd 
    7082 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    7262 |   MASTER-Kislovodsk |  P- |   540 | 18.2 |  Coadd 
    7892 |   MASTER-Kislovodsk |  P- |  1800 | 18.5 |  Coadd 
    7082 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    7892 |   MASTER-Kislovodsk |  P| |  1800 | 19.4 |  Coadd 
    7283 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    7283 |   MASTER-Kislovodsk |  P| |   180 | 18.8 |        
    7483 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    7483 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    7663 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    7685 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    7865 |   MASTER-Kislovodsk |  P- |   540 | 17.8 |  Coadd 
    7685 |   MASTER-Kislovodsk |  P| |   180 | 18.6 |        
    7886 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    7886 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    8087 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    8087 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    8267 |   MASTER-Kislovodsk |  P| |   540 | 18.5 |  Coadd 
    8287 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    8467 |   MASTER-Kislovodsk |  P- |   540 | 17.8 |  Coadd 
    8287 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    8489 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    8489 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    8690 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    8690 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    8870 |   MASTER-Kislovodsk |  P| |   540 | 18.5 |  Coadd 
    8890 |   MASTER-Kislovodsk |  P- |   180 | 16.8 |        
    9070 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    8890 |   MASTER-Kislovodsk |  P| |   180 | 17.8 |        
    9091 |   MASTER-Kislovodsk |  P- |   180 | 16.8 |        
    9091 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    9292 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    9292 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    9472 |   MASTER-Kislovodsk |  P| |   540 | 18.0 |  Coadd 
    9493 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    9673 |   MASTER-Kislovodsk |  P- |   540 | 16.3 |  Coadd 
    9493 |   MASTER-Kislovodsk |  P| |   180 | 17.3 |        
    9694 |   MASTER-Kislovodsk |  P- |   180 | 15.5 |        
    9694 |   MASTER-Kislovodsk |  P| |   180 | 16.0 |        
    9895 |   MASTER-Kislovodsk |  P- |   180 | 14.3 |        
    9896 |   MASTER-Kislovodsk |  P| |   180 | 15.0 |        
   10096 |   MASTER-Kislovodsk |  P- |   180 | 15.2 |        
   10097 |   MASTER-Kislovodsk |  P| |   180 | 15.8 |        
   10297 |   MASTER-Kislovodsk |  P- |   180 | 13.0 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3956
TYPE = 35
DAYS = 0.1


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the INTEGRAL GRB210312.87 (trigger No 9073,10h 23m 22.36s , +76d 52m 15.2s, R=0.0333333) errorbox  27 sec after notice time and 38 sec after trigger time at 2021-03-12 20:52:58 UT, with upper limit up to  19.6 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -49.6 deg. 

The galactic latitude b = 38 deg., longitude l = 133 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1567266

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      43 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      63 |   MASTER-Kislovodsk |  P- |    50 | 16.8 |  Coadd 
     433 |   MASTER-Kislovodsk |  P- |   790 | 17.4 |  Coadd 
      43 |   MASTER-Kislovodsk |  P| |    10 | 15.8 |        
      53 |   MASTER-Kislovodsk |  P| |    30 | 16.7 |  Coadd 
     398 |   MASTER-Kislovodsk |  P| |   720 | 19.2 |  Coadd 
      61 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      61 |   MASTER-Kislovodsk |  P| |    10 | 15.9 |        
      79 |   MASTER-Kislovodsk |  P- |    10 | 14.7 |        
      79 |   MASTER-Kislovodsk |  P| |    10 | 16.0 |        
     105 |   MASTER-Kislovodsk |  P- |    20 | 16.3 |        
     105 |   MASTER-Kislovodsk |  P| |    20 | 16.8 |        
     130 |   MASTER-Kislovodsk |  P| |    70 | 17.6 |  Coadd 
     133 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     133 |   MASTER-Kislovodsk |  P| |    20 | 16.6 |        
     166 |   MASTER-Kislovodsk |  P- |    30 | 16.7 |        
     211 |   MASTER-Kislovodsk |  P- |   120 | 17.3 |  Coadd 
     166 |   MASTER-Kislovodsk |  P| |    30 | 17.3 |        
     209 |   MASTER-Kislovodsk |  P- |    40 | 16.7 |        
     209 |   MASTER-Kislovodsk |  P| |    40 | 17.4 |        
     264 |   MASTER-Kislovodsk |  P| |   150 | 18.2 |  Coadd 
     262 |   MASTER-Kislovodsk |  P- |    50 | 16.7 |        
     262 |   MASTER-Kislovodsk |  P| |    50 | 17.5 |        
     325 |   MASTER-Kislovodsk |  P- |    60 | 16.8 |        
     405 |   MASTER-Kislovodsk |  P- |   220 | 17.7 |  Coadd 
     325 |   MASTER-Kislovodsk |  P| |    60 | 17.5 |        
     398 |   MASTER-Kislovodsk |  P- |    70 | 16.7 |        
     398 |   MASTER-Kislovodsk |  P| |    70 | 17.7 |        
     518 |   MASTER-Kislovodsk |  P| |   310 | 19.2 |  Coadd 
     486 |   MASTER-Kislovodsk |  P- |    90 | 17.0 |        
     594 |   MASTER-Kislovodsk |  P- |   110 | 17.4 |        
     739 |   MASTER-Kislovodsk |  P- |   400 | 18.5 |  Coadd 
     594 |   MASTER-Kislovodsk |  P| |   110 | 18.5 |        
     722 |   MASTER-Kislovodsk |  P- |   130 | 17.7 |        
     722 |   MASTER-Kislovodsk |  P| |   130 | 18.5 |        
     875 |   MASTER-Kislovodsk |  P- |   160 | 17.9 |        
     875 |   MASTER-Kislovodsk |  P| |   160 | 18.9 |        
    1053 |   MASTER-Kislovodsk |  P- |   180 | 18.1 |        
    1233 |   MASTER-Kislovodsk |  P- |   540 | 18.7 |  Coadd 
    1863 |   MASTER-Kislovodsk |  P- |  1800 | 18.7 |  Coadd 
    1053 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    1863 |   MASTER-Kislovodsk |  P| |  1800 | 19.6 |  Coadd 
    1254 |   MASTER-Kislovodsk |  P- |   180 | 17.9 |        
    1254 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    1455 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    1455 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    1635 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    1656 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    1836 |   MASTER-Kislovodsk |  P- |   540 | 18.3 |  Coadd 
    1656 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    1857 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    1857 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    2057 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2057 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    2237 |   MASTER-Kislovodsk |  P| |   540 | 19.3 |  Coadd 
    2258 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    2438 |   MASTER-Kislovodsk |  P- |   540 | 18.3 |  Coadd 
    2258 |   MASTER-Kislovodsk |  P| |   180 | 18.4 |        
    2459 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2459 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    2661 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    2661 |   MASTER-Kislovodsk |  P| |   180 | 18.6 |        
    2841 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    2862 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    3042 |   MASTER-Kislovodsk |  P- |   540 | 18.5 |  Coadd 
    2862 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    3063 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3873 |   MASTER-Kislovodsk |  P- |  1800 | 18.9 |  Coadd 
    3063 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3873 |   MASTER-Kislovodsk |  P| |  1800 | 19.6 |  Coadd 
    3264 |   MASTER-Kislovodsk |  P- |   180 | 17.9 |        
    3264 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3444 |   MASTER-Kislovodsk |  P| |   540 | 19.6 |  Coadd 
    3465 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3645 |   MASTER-Kislovodsk |  P- |   540 | 18.5 |  Coadd 
    3465 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    3666 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    3666 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    3867 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    3867 |   MASTER-Kislovodsk |  P| |   180 | 18.8 |        
    4047 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    4068 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    4248 |   MASTER-Kislovodsk |  P- |   540 | 18.4 |  Coadd 
    4068 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    4269 |   MASTER-Kislovodsk |  P- |   180 | 17.8 |        
    4269 |   MASTER-Kislovodsk |  P| |   180 | 18.9 |        
    4469 |   MASTER-Kislovodsk |  P- |   180 | 17.7 |        
    4469 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    4649 |   MASTER-Kislovodsk |  P| |   540 | 19.1 |  Coadd 
    4670 |   MASTER-Kislovodsk |  P- |   180 | 17.3 |        
    4850 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    4670 |   MASTER-Kislovodsk |  P| |   180 | 18.4 |        
    4871 |   MASTER-Kislovodsk |  P- |   180 | 16.9 |        
    4871 |   MASTER-Kislovodsk |  P| |   180 | 17.9 |        
    5072 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    5882 |   MASTER-Kislovodsk |  P- |  1800 | 17.5 |  Coadd 
    5072 |   MASTER-Kislovodsk |  P| |   180 | 17.4 |        
    5252 |   MASTER-Kislovodsk |  P| |   540 | 18.0 |  Coadd 
    5882 |   MASTER-Kislovodsk |  P| |  1800 | 18.5 |  Coadd 
    5272 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    5452 |   MASTER-Kislovodsk |  P- |   540 | 17.3 |  Coadd 
    5272 |   MASTER-Kislovodsk |  P| |   180 | 17.3 |        
    5474 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    5474 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    5675 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    5675 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    5855 |   MASTER-Kislovodsk |  P| |   540 | 18.3 |  Coadd 
    5876 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    6056 |   MASTER-Kislovodsk |  P- |   540 | 17.3 |  Coadd 
    5876 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    6077 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    6077 |   MASTER-Kislovodsk |  P| |   180 | 17.6 |        
    6278 |   MASTER-Kislovodsk |  P- |   180 | 16.4 |        
    6278 |   MASTER-Kislovodsk |  P| |   180 | 17.4 |        
    6458 |   MASTER-Kislovodsk |  P| |   540 | 18.3 |  Coadd 
    6479 |   MASTER-Kislovodsk |  P- |   180 | 16.0 |        
    6659 |   MASTER-Kislovodsk |  P- |   540 | 17.5 |  Coadd 
    6479 |   MASTER-Kislovodsk |  P| |   180 | 16.7 |        
    6680 |   MASTER-Kislovodsk |  P- |   180 | 17.2 |        
    6680 |   MASTER-Kislovodsk |  P| |   180 | 18.2 |        
    6881 |   MASTER-Kislovodsk |  P- |   180 | 17.3 |        
    6881 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    7061 |   MASTER-Kislovodsk |  P| |   540 | 19.2 |  Coadd 
    7082 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    7262 |   MASTER-Kislovodsk |  P- |   540 | 18.2 |  Coadd 
    7892 |   MASTER-Kislovodsk |  P- |  1800 | 18.5 |  Coadd 
    7082 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    7892 |   MASTER-Kislovodsk |  P| |  1800 | 19.4 |  Coadd 
    7283 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    7283 |   MASTER-Kislovodsk |  P| |   180 | 18.8 |        
    7483 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    7483 |   MASTER-Kislovodsk |  P| |   180 | 18.7 |        
    7663 |   MASTER-Kislovodsk |  P| |   540 | 19.4 |  Coadd 
    7685 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    7865 |   MASTER-Kislovodsk |  P- |   540 | 17.8 |  Coadd 
    7685 |   MASTER-Kislovodsk |  P| |   180 | 18.6 |        
    7886 |   MASTER-Kislovodsk |  P- |   180 | 17.4 |        
    7886 |   MASTER-Kislovodsk |  P| |   180 | 18.3 |        
    8087 |   MASTER-Kislovodsk |  P- |   180 | 16.6 |        
    8087 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    8267 |   MASTER-Kislovodsk |  P| |   540 | 18.5 |  Coadd 
    8287 |   MASTER-Kislovodsk |  P- |   180 | 17.5 |        
    8467 |   MASTER-Kislovodsk |  P- |   540 | 17.8 |  Coadd 
    8287 |   MASTER-Kislovodsk |  P| |   180 | 19.0 |        
    8489 |   MASTER-Kislovodsk |  P- |   180 | 16.7 |        
    8489 |   MASTER-Kislovodsk |  P| |   180 | 17.5 |        
    8690 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    8690 |   MASTER-Kislovodsk |  P| |   180 | 18.5 |        
    8870 |   MASTER-Kislovodsk |  P| |   540 | 18.5 |  Coadd 


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3955
TYPE = 35
DAYS = 0


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the INTEGRAL GRB210312.87 (trigger No 9073,10h 23m 22.09s , +76d 52m 36.7s, R=0.0491667) errorbox  27 sec after notice time and 41 sec after trigger time at 2021-03-12 20:52:58 UT, with upper limit up to  15.9 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -49.6 deg. 

The galactic latitude b = 38 deg., longitude l = 133 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1567228

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      46 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      46 |   MASTER-Kislovodsk |  P| |    10 | 15.8 |        
      64 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      64 |   MASTER-Kislovodsk |  P| |    10 | 15.9 |        


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3954
TYPE = 35
DAYS = 0


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the INTEGRAL GRB210312.87 (trigger No 9073,10h 23m 22.09s , +76d 52m 36.7s, R=0.0491667) errorbox  27 sec after notice time and 41 sec after trigger time at 2021-03-12 20:52:58 UT, with upper limit up to  15.9 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -49.6 deg. 

The galactic latitude b = 38 deg., longitude l = 133 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1567228

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      46 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      46 |   MASTER-Kislovodsk |  P| |    10 | 15.8 |        
      64 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      64 |   MASTER-Kislovodsk |  P| |    10 | 15.9 |        


The observation and reduction will continue. 
The message may be cited.



#######################################################################################
#######################################################################################

  ID = 3953
TYPE = 34
DAYS = 0


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the INTEGRAL GRB210312.87 (trigger No 9073,10h 23m 22.09s , +76d 52m 36.7s, R=0.0491667) errorbox  27 sec after notice time and 41 sec after trigger time at 2021-03-12 20:52:58 UT, with upper limit up to  15.9 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -49.6 deg. 

The galactic latitude b = 38 deg., longitude l = 133 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1567228

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      46 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      46 |   MASTER-Kislovodsk |  P| |    10 | 15.8 |        
      64 |   MASTER-Kislovodsk |  P- |    10 | 14.9 |        
      64 |   MASTER-Kislovodsk |  P| |    10 | 15.9 |        


The observation and reduction will continue. 
The message may be cited.

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