MASTER Net MASTER Database: GRB210406.72 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 GRB210406.72
Trignum 9126
Trigger time 2021-04-06 17:11:54.66
Notice time 2021-04-06 17:14:57.124876
Coord, eb (08h 49m 47.73s , +76d 31m 38.6s) , 0.0425
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You are viewing outdated information, relevant error box is here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
1585520 2021-04-06 17:46:48.14013 08h 49m 50.12s +76d 31m 56.6s INTEGRAL 0.025 alert 9126 3 55 alert
1585493 2021-04-06 17:14:57.124876 08h 49m 47.73s +76d 31m 38.6s INTEGRAL 0.0425 alert 9126 2 54 alert
1585485 2021-04-06 17:12:10.922197 08h 49m 46.12s +76d 30m 59.0s INTEGRAL 0.0516667 alert 9126 -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
32.5 2021-04-06 17:10:58.564 10h 15m 15.00s +45d 13m 02.0s Kislovodsk 29007 Database Kislovodsk
43.8 2021-04-06 17:11:48.079 16h 01m 29.00s +51d 58m 59.0s Tunka 100628 Database Tunka
46.1 2021-04-06 17:09:52.91 15h 32m 29.00s +48d 01m 00.0s Tunka 100629 Database Tunka
32.5 2021-04-06 17:10:56.587 10h 15m 15.00s +45d 13m 02.0s Kislovodsk 111339 Database Kislovodsk
73.0 2021-04-06 17:11:49.682 05h 55m 07.00s +07d 25m 24.0s SAAO 111341 Database SAAO
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2021-04-06 17:11:54 (JD 2459311.216597)

Siderial time 8.720333 h

Ra 08:49:47.73 Dec 76:31:38.60
(132.448875d, 76.527389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 48.85 Azimuth: 159.27

Sun: Altitude: -29.04 Azimuth: 208.89

Moon: Altitude: -20.96 Azimuth: 277.45

Tunka

Object: Altitude: 55.89 Azimuth: 158.12

Sun: Altitude: -31.57 Azimuth: 180.87

Moon: Altitude: -36.15 Azimuth: 257.15

Kislovodsk

Object: Altitude: 57.19 Azimuth: 178.60

Sun: Altitude: -16.34 Azimuth: 116.54

Moon: Altitude: -66.74 Azimuth: 172.24

Tavrida

Object: Altitude: 58.13 Azimuth: 182.31

Sun: Altitude: -10.36 Azimuth: 110.24

Moon: Altitude: -64.03 Azimuth: 154.16

SAAO

Object: Altitude: -19.52 Azimuth: 184.49

Sun: Altitude: -10.69 Azimuth: 91.09

Moon: Altitude: -31.84 Azimuth: 27.72

IAC

Object: Altitude: 35.20 Azimuth: 193.63

Sun: Altitude: 28.45 Azimuth: 81.78

Moon: Altitude: -33.38 Azimuth: 82.83

Argentina

Object: Altitude: -35.14 Azimuth: 195.67

Sun: Altitude: 50.77 Azimuth: 166.81

Moon: Altitude: 31.56 Azimuth: 83.91

Mexico

Object: Altitude: 19.23 Azimuth: 187.16

Sun: Altitude: 50.85 Azimuth: 301.78

Moon: Altitude: 33.46 Azimuth: 26.95

Ural

Object: Altitude: 69.20 Azimuth: 166.86

Sun: Altitude: -17.46 Azimuth: 134.99

Moon: Altitude: -52.23 Azimuth: 201.30

Vostryakovo

Object: Altitude: 68.85 Azimuth: 180.94

Sun: Altitude: -8.52 Azimuth: 114.95

Moon: Altitude: -54.75 Azimuth: 166.99

Gal. latitude: 33.475388 Gal. longitude: 136.969484

Dist. to Sun: 89.591809

Dist. to Moon: 124.024120

Moon coord.: (318.974437 d, -20.649209 d)

Sun coord.: (15.504893 d, 6.612786 d)

Lunar disk: 0.265115

Lunar phase: 118.019332

Lunar bright limb: 70.037749

No SN in this field

2021-04-06 17:14:57 (JD 2459311.218715)

Siderial time 8.771305 h

Ra 08:49:47.73 Dec 76:31:38.60
(132.448875d, 76.527389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 48.68 Azimuth: 159.34

Sun: Altitude: -28.80 Azimuth: 209.71

Moon: Altitude: -20.49 Azimuth: 277.99

Tunka

Object: Altitude: 55.71 Azimuth: 158.07

Sun: Altitude: -31.56 Azimuth: 181.76

Moon: Altitude: -35.70 Azimuth: 257.80

Kislovodsk

Object: Altitude: 57.17 Azimuth: 178.27

Sun: Altitude: -16.83 Azimuth: 117.14

Moon: Altitude: -66.80 Azimuth: 173.99

Tavrida

Object: Altitude: 58.15 Azimuth: 181.98

Sun: Altitude: -10.87 Azimuth: 110.81

Moon: Altitude: -64.24 Azimuth: 155.66

SAAO

Object: Altitude: -19.47 Azimuth: 184.31

Sun: Altitude: -11.34 Azimuth: 90.68

Moon: Altitude: -32.13 Azimuth: 26.98

IAC

Object: Altitude: 35.36 Azimuth: 193.53

Sun: Altitude: 27.78 Azimuth: 82.19

Moon: Altitude: -34.02 Azimuth: 83.13

Argentina

Object: Altitude: -34.97 Azimuth: 195.70

Sun: Altitude: 50.61 Azimuth: 165.64

Moon: Altitude: 30.93 Azimuth: 83.57

Mexico

Object: Altitude: 19.31 Azimuth: 187.33

Sun: Altitude: 51.40 Azimuth: 302.61

Moon: Altitude: 33.18 Azimuth: 27.70

Ural

Object: Altitude: 69.11 Azimuth: 166.43

Sun: Altitude: -17.75 Azimuth: 135.72

Moon: Altitude: -52.07 Azimuth: 202.39

Vostryakovo

Object: Altitude: 68.85 Azimuth: 180.44

Sun: Altitude: -8.91 Azimuth: 115.61

Moon: Altitude: -54.84 Azimuth: 168.18

Gal. latitude: 33.475388 Gal. longitude: 136.969484

Dist. to Sun: 89.590628

Dist. to Moon: 124.016088

Moon coord.: (319.002708 d, -20.642020 d)

Sun coord.: (15.506831 d, 6.613585 d)

Lunar disk: 0.264921

Lunar phase: 118.044607

Lunar bright limb: 70.026774

No SN in this field

2021-04-06 18:14:57 (JD 2459311.260382)

Siderial time 9.774043 h

Ra 08:49:47.73 Dec 76:31:38.60
(132.448875d, 76.527389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 45.43 Azimuth: 161.21

Sun: Altitude: -22.98 Azimuth: 224.98

Moon: Altitude: -11.39 Azimuth: 288.46

Tunka

Object: Altitude: 52.21 Azimuth: 158.04

Sun: Altitude: -29.87 Azimuth: 199.00

Moon: Altitude: -26.70 Azimuth: 269.69

Kislovodsk

Object: Altitude: 56.25 Azimuth: 172.13

Sun: Altitude: -25.86 Azimuth: 129.90

Moon: Altitude: -64.71 Azimuth: 207.02

Tavrida

Object: Altitude: 57.90 Azimuth: 175.39

Sun: Altitude: -20.36 Azimuth: 122.76

Moon: Altitude: -65.60 Azimuth: 187.85

SAAO

Object: Altitude: -18.92 Azimuth: 180.65

Sun: Altitude: -23.98 Azimuth: 82.39

Moon: Altitude: -36.30 Azimuth: 11.36

IAC

Object: Altitude: 38.19 Azimuth: 190.98

Sun: Altitude: 14.62 Azimuth: 89.72

Moon: Altitude: -46.69 Azimuth: 89.51

Argentina

Object: Altitude: -31.47 Azimuth: 195.83

Sun: Altitude: 45.21 Azimuth: 144.82

Moon: Altitude: 18.74 Azimuth: 77.01

Mexico

Object: Altitude: 21.31 Azimuth: 190.39

Sun: Altitude: 60.88 Azimuth: 323.51

Moon: Altitude: 26.27 Azimuth: 41.15

Ural

Object: Altitude: 66.69 Azimuth: 159.71

Sun: Altitude: -22.62 Azimuth: 150.74

Moon: Altitude: -47.70 Azimuth: 222.40

Vostryakovo

Object: Altitude: 68.21 Azimuth: 171.05

Sun: Altitude: -16.09 Azimuth: 129.00

Moon: Altitude: -54.70 Azimuth: 191.79

Gal. latitude: 33.475388 Gal. longitude: 136.969484

Dist. to Sun: 89.567389

Dist. to Moon: 123.856506

Moon coord.: (319.558075 d, -20.499727 d)

Sun coord.: (15.544950 d, 6.629301 d)

Lunar disk: 0.261102

Lunar phase: 118.541578

Lunar bright limb: 69.811548

No SN in this field

2024-10-05 09:18:17 (JD 2460588.887697)

Siderial time 12.782266 h

Ra 08:49:47.73 Dec 76:31:38.60
(132.448875d, 76.527389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 38.37 Azimuth: 171.24

Sun: Altitude: -3.93 Azimuth: 87.12

Moon: Altitude: 1.52 Azimuth: 59.28

Tunka

Object: Altitude: 43.02 Azimuth: 164.82

Sun: Altitude: 10.67 Azimuth: 67.73

Moon: Altitude: 12.13 Azimuth: 38.84

Kislovodsk

Object: Altitude: 48.22 Azimuth: 161.65

Sun: Altitude: 41.16 Azimuth: 7.07

Moon: Altitude: 25.67 Azimuth: 338.33

Tavrida

Object: Altitude: 51.05 Azimuth: 162.17

Sun: Altitude: 40.33 Azimuth: 355.86

Moon: Altitude: 22.13 Azimuth: 330.15

SAAO

Object: Altitude: -22.07 Azimuth: 170.23

Sun: Altitude: 58.51 Azimuth: 212.53

Moon: Altitude: 49.43 Azimuth: 259.39

IAC

Object: Altitude: 41.71 Azimuth: 178.39

Sun: Altitude: 28.64 Azimuth: 293.81

Moon: Altitude: 0.46 Azimuth: 290.58

Argentina

Object: Altitude: -22.28 Azimuth: 190.73

Sun: Altitude: -11.31 Azimuth: 283.04

Moon: Altitude: -22.56 Azimuth: 310.32

Mexico

Object: Altitude: 30.40 Azimuth: 195.67

Sun: Altitude: -49.83 Azimuth: 235.94

Moon: Altitude: -75.44 Azimuth: 205.96

Ural

Object: Altitude: 56.65 Azimuth: 155.24

Sun: Altitude: 25.49 Azimuth: 24.83

Moon: Altitude: 15.11 Azimuth: 356.61

Vostryakovo

Object: Altitude: 60.17 Azimuth: 156.20

Sun: Altitude: 29.76 Azimuth: 0.72

Moon: Altitude: 13.77 Azimuth: 335.36

Gal. latitude: 33.475388 Gal. longitude: 136.969484

Dist. to Sun: 87.837890

Dist. to Moon: 106.054286

Moon coord.: (217.096512 d, -17.797370 d)

Sun coord.: (191.299933 d, -4.857800 d)

Lunar disk: 0.060221

Lunar phase: 151.589198

Lunar bright limb: 294.055819

No SN in this field
Recent coverage and limits telegrams

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

  ID = 4059
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 GRB210406.72 (trigger No 9126,08h 49m 50.12s , +76d 31m 56.6s, R=0.025) errorbox  10 sec after notice time and 2 sec after trigger time at 2021-04-06 17:11:57 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance = 34 deg. The sun  altitude  is -16.3 deg. 

The galactic latitude b = 33 deg., longitude l = 137 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1585520

We obtain a following upper limits.  

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

       8 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      26 |   MASTER-Kislovodsk |  P- |    10 | 14.5 |        
      44 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      67 |   MASTER-Kislovodsk |  P- |    20 | 16.7 |        
      94 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     124 |   MASTER-Kislovodsk |  P- |    80 | 17.3 |  Coadd 
     494 |   MASTER-Kislovodsk |  P- |   820 | 19.0 |  Coadd 
     127 |   MASTER-Kislovodsk |  P- |    30 | 16.8 |        
     165 |   MASTER-Kislovodsk |  P- |    30 | 17.0 |        
     208 |   MASTER-Kislovodsk |  P- |    40 | 16.9 |        
     263 |   MASTER-Kislovodsk |  P- |   150 | 17.3 |  Coadd 
     261 |   MASTER-Kislovodsk |  P- |    50 | 16.9 |        
     324 |   MASTER-Kislovodsk |  P- |    60 | 16.9 |        
     402 |   MASTER-Kislovodsk |  P- |    80 | 17.0 |        
     502 |   MASTER-Kislovodsk |  P- |   280 | 17.7 |  Coadd 
     495 |   MASTER-Kislovodsk |  P- |    90 | 17.0 |        
     603 |   MASTER-Kislovodsk |  P- |   110 | 17.3 |        
     736 |   MASTER-Kislovodsk |  P- |   140 | 17.4 |        
     898 |   MASTER-Kislovodsk |  P- |   170 | 17.4 |        
    1081 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    1282 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    1462 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    1482 |   MASTER-Kislovodsk |  P- |   180 | 18.0 |        
    1683 |   MASTER-Kislovodsk |  P- |   180 | 15.8 |        
    5045 |             MASTER- |   C |    60 | 18.5 |        
    5045 |             MASTER- |   C |    60 | 18.5 |        
    5120 |             MASTER- |   C |    60 | 18.7 |        
    5120 |             MASTER- |   C |    60 | 18.5 |        
    5195 |             MASTER- |   C |    60 | 18.8 |        
    5195 |             MASTER- |   C |    60 | 18.5 |        
    5269 |             MASTER- |   C |    60 | 19.0 |        
    5269 |             MASTER- |   C |    60 | 18.5 |        
    5344 |             MASTER- |   C |    60 | 18.8 |        
    5344 |             MASTER- |   C |    60 | 18.6 |        
    5419 |             MASTER- |   C |    60 | 18.8 |        
    5419 |             MASTER- |   C |    60 | 18.5 |        
    5494 |             MASTER- |   C |    60 | 18.9 |        
    5494 |             MASTER- |   C |    60 | 18.5 |        
    5569 |             MASTER- |   C |    60 | 18.8 |        
    5569 |             MASTER- |   C |    60 | 18.5 |        
    5642 |             MASTER- |   C |    60 | 18.8 |        
    5642 |             MASTER- |   C |    60 | 18.5 |        
    5717 |             MASTER- |   C |    60 | 18.9 |        
    5717 |             MASTER- |   C |    60 | 18.6 |        
    5792 |             MASTER- |   C |    60 | 18.7 |        
    5792 |             MASTER- |   C |    60 | 18.4 |        
    5867 |             MASTER- |   C |    60 | 18.7 |        
    5867 |             MASTER- |   C |    60 | 18.5 |        
    5941 |             MASTER- |   C |    60 | 18.8 |        
    5941 |             MASTER- |   C |    60 | 18.5 |        
    6016 |             MASTER- |   C |    60 | 18.7 |        
    6016 |             MASTER- |   C |    60 | 18.5 |        
    6091 |             MASTER- |   C |    60 | 18.6 |        
    6091 |             MASTER- |   C |    60 | 18.5 |        
    6165 |             MASTER- |   C |    60 | 18.7 |        
    6165 |             MASTER- |   C |    60 | 18.5 |        
    6239 |             MASTER- |   C |    60 | 18.7 |        
    6239 |             MASTER- |   C |    60 | 18.5 |        
    6314 |             MASTER- |   C |    60 | 18.8 |        
    6314 |             MASTER- |   C |    60 | 18.3 |        
    6389 |             MASTER- |   C |    60 | 18.8 |        
    6389 |             MASTER- |   C |    60 | 18.5 |        
    6464 |             MASTER- |   C |    60 | 18.8 |        
    6464 |             MASTER- |   C |    60 | 18.6 |        
    6537 |             MASTER- |   C |    60 | 18.7 |        
    6537 |             MASTER- |   C |    60 | 18.6 |        
    6612 |             MASTER- |   C |    60 | 18.8 |        
    6612 |             MASTER- |   C |    60 | 18.4 |        
    6685 |             MASTER- |   C |    60 | 19.0 |        
    6685 |             MASTER- |   C |    60 | 18.6 |        
    6760 |             MASTER- |   C |    60 | 19.0 |        
    6760 |             MASTER- |   C |    60 | 18.5 |        
    6930 |             MASTER- |   C |    20 | 18.7 |        
    6930 |             MASTER- |   C |    20 | 18.5 |        
    7016 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
    7016 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    6964 |             MASTER- |   C |    20 | 19.0 |        
    6965 |             MASTER- |   C |    20 | 18.9 |        
    7001 |             MASTER- |   C |    20 | 18.7 |        
    7001 |             MASTER- |   C |    20 | 18.6 |        
    7037 |             MASTER- |   C |    20 | 18.9 |        
    7037 |             MASTER- |   C |    20 | 18.6 |        
    7072 |             MASTER- |   C |    20 | 18.9 |        
    7072 |             MASTER- |   C |    20 | 18.4 |        
    7107 |             MASTER- |   C |    20 | 18.7 |        
    7107 |             MASTER- |   C |    20 | 18.5 |        
    7216 |   MASTER-Kislovodsk |   C |   180 | 17.2 |        
    7216 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
    7143 |             MASTER- |   C |    20 | 18.8 |        
    7143 |             MASTER- |   C |    20 | 18.6 |        
    7178 |             MASTER- |   C |    20 | 18.7 |        
    7178 |             MASTER- |   C |    20 | 18.4 |        
    7213 |             MASTER- |   C |    20 | 18.8 |        
    7213 |             MASTER- |   C |    20 | 18.5 |        
    7250 |             MASTER- |   C |    20 | 18.8 |        
    7250 |             MASTER- |   C |    20 | 18.6 |        
    7285 |             MASTER- |   C |    20 | 18.8 |        
    7285 |             MASTER- |   C |    20 | 18.5 |        
    7319 |             MASTER- |   C |    20 | 18.7 |        
    7319 |             MASTER- |   C |    20 | 18.5 |        
    7417 |   MASTER-Kislovodsk |   C |   180 | 16.3 |        
    7417 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
    7524 |             MASTER- |   C |    20 | 18.9 |        
    7524 |             MASTER- |   C |    20 | 18.8 |        
    7617 |   MASTER-Kislovodsk |   C |   180 | 16.7 |        
    7617 |   MASTER-Kislovodsk |   C |   180 | 15.0 |        
    7558 |             MASTER- |   C |    20 | 18.7 |        
    7558 |             MASTER- |   C |    20 | 18.5 |        
    7592 |             MASTER- |   C |    20 | 18.8 |        
    7592 |             MASTER- |   C |    20 | 18.5 |        
    7627 |             MASTER- |   C |    20 | 18.6 |        
    7627 |             MASTER- |   C |    20 | 18.5 |        
    7663 |             MASTER- |   C |    20 | 18.6 |        
    7663 |             MASTER- |   C |    20 | 18.4 |        
    7698 |             MASTER- |   C |    20 | 18.8 |        
    7698 |             MASTER- |   C |    20 | 18.5 |        
    7733 |             MASTER- |   C |    20 | 18.7 |        
    7733 |             MASTER- |   C |    20 | 18.5 |        
    7818 |   MASTER-Kislovodsk |   C |   180 | 16.9 |        
    7818 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
    7763 |             MASTER- |   C |    10 | 18.5 |        
    7763 |             MASTER- |   C |    10 | 18.1 |        
    7796 |             MASTER- |   C |    10 | 18.4 |        
    7796 |             MASTER- |   C |    10 | 18.2 |        
    7822 |             MASTER- |   C |    10 | 18.4 |        
    7822 |             MASTER- |   C |    10 | 18.3 |        
    7856 |             MASTER- |   C |    10 | 18.4 |        
    7856 |             MASTER- |   C |    10 | 18.2 |        
    7882 |             MASTER- |   C |    10 | 18.5 |        
    7882 |             MASTER- |   C |    10 | 18.3 |        
    8018 |   MASTER-Kislovodsk |   C |   180 | 17.4 |        
    8018 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    8121 |             MASTER- |   C |    10 | 18.5 |        
    8122 |             MASTER- |   C |    10 | 18.1 |        
    8219 |   MASTER-Kislovodsk |   C |   180 | 17.3 |        
    8219 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    8153 |             MASTER- |   C |    10 | 18.5 |        
    8153 |             MASTER- |   C |    10 | 18.2 |        
    8178 |             MASTER- |   C |    10 | 18.4 |        
    8179 |             MASTER- |   C |    10 | 18.1 |        
    8203 |             MASTER- |   C |    10 | 18.5 |        
    8203 |             MASTER- |   C |    10 | 18.1 |        
    8228 |             MASTER- |   C |    10 | 18.4 |        
    8228 |             MASTER- |   C |    10 | 18.1 |        
    8260 |             MASTER- |   C |    10 | 18.5 |        
    8260 |             MASTER- |   C |    10 | 18.4 |        
    8285 |             MASTER- |   C |    10 | 18.5 |        
    8285 |             MASTER- |   C |    10 | 18.1 |        
    8310 |             MASTER- |   C |    10 | 18.5 |        
    8311 |             MASTER- |   C |    10 | 18.1 |        
    8419 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
    8419 |   MASTER-Kislovodsk |   C |   180 | 16.1 |        
    8343 |             MASTER- |   C |    10 | 18.2 |        
    8343 |             MASTER- |   C |    10 | 18.1 |        
    8368 |             MASTER- |   C |    10 | 18.5 |        
    8368 |             MASTER- |   C |    10 | 18.4 |        
    8400 |             MASTER- |   C |    10 | 18.5 |        
    8400 |             MASTER- |   C |    10 | 18.1 |        
    8918 |   MASTER-Kislovodsk |   C |   180 | 14.8 |        
    8918 |   MASTER-Kislovodsk |   C |   180 | 16.5 |        
    9118 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
    9118 |   MASTER-Kislovodsk |   C |   180 | 14.9 |        
    9319 |   MASTER-Kislovodsk |   C |   180 | 17.2 |        
    9319 |   MASTER-Kislovodsk |   C |   180 | 15.1 |        
    9520 |   MASTER-Kislovodsk |   C |   180 | 16.7 |        
    9720 |   MASTER-Kislovodsk |   C |   180 | 16.7 |        
    9720 |   MASTER-Kislovodsk |   C |   180 | 12.3 |        
   14701 |   MASTER-Kislovodsk |   C |   180 | 18.2 |        
   14881 |   MASTER-Kislovodsk |   C |   540 | 18.6 |  Coadd 
   14701 |   MASTER-Kislovodsk |   C |   180 | 12.3 |        
   14902 |   MASTER-Kislovodsk |   C |   180 | 17.6 |        
   14902 |   MASTER-Kislovodsk |   C |   180 | 14.2 |        
   15102 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
   15102 |   MASTER-Kislovodsk |   C |   180 | 14.8 |        
   15302 |   MASTER-Kislovodsk |   C |   180 | 17.9 |        
   15482 |   MASTER-Kislovodsk |   C |   540 | 18.8 |  Coadd 
   15302 |   MASTER-Kislovodsk |   C |   180 | 15.3 |        
   15502 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
   15502 |   MASTER-Kislovodsk |   C |   180 | 15.2 |        
   15703 |   MASTER-Kislovodsk |   C |   180 | 17.8 |        
   15703 |   MASTER-Kislovodsk |   C |   180 | 15.1 |        
   15903 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   15903 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
   16104 |   MASTER-Kislovodsk |   C |   180 | 18.4 |        
   16104 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4058
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 GRB210406.72 (trigger No 9126,08h 49m 50.12s , +76d 31m 56.6s, R=0.025) errorbox  10 sec after notice time and 2 sec after trigger time at 2021-04-06 17:11:57 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance = 34 deg. The sun  altitude  is -16.3 deg. 

The galactic latitude b = 33 deg., longitude l = 137 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1585518

We obtain a following upper limits.  

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

       8 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      26 |   MASTER-Kislovodsk |  P- |    10 | 14.5 |        
      44 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      67 |   MASTER-Kislovodsk |  P- |    20 | 16.7 |        
      94 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     124 |   MASTER-Kislovodsk |  P- |    80 | 17.3 |  Coadd 
     494 |   MASTER-Kislovodsk |  P- |   820 | 19.0 |  Coadd 
     127 |   MASTER-Kislovodsk |  P- |    30 | 16.8 |        
     165 |   MASTER-Kislovodsk |  P- |    30 | 17.0 |        
     208 |   MASTER-Kislovodsk |  P- |    40 | 16.9 |        
     263 |   MASTER-Kislovodsk |  P- |   150 | 17.3 |  Coadd 
     261 |   MASTER-Kislovodsk |  P- |    50 | 16.9 |        
     324 |   MASTER-Kislovodsk |  P- |    60 | 16.9 |        
     402 |   MASTER-Kislovodsk |  P- |    80 | 17.0 |        
     502 |   MASTER-Kislovodsk |  P- |   280 | 17.7 |  Coadd 
     495 |   MASTER-Kislovodsk |  P- |    90 | 17.0 |        
     603 |   MASTER-Kislovodsk |  P- |   110 | 17.3 |        
     736 |   MASTER-Kislovodsk |  P- |   140 | 17.4 |        
     898 |   MASTER-Kislovodsk |  P- |   170 | 17.4 |        
    1081 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    1282 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    1462 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    1482 |   MASTER-Kislovodsk |  P- |   180 | 18.0 |        
    1683 |   MASTER-Kislovodsk |  P- |   180 | 15.8 |        
    5045 |             MASTER- |   C |    60 | 18.5 |        
    5045 |             MASTER- |   C |    60 | 18.5 |        
    5120 |             MASTER- |   C |    60 | 18.7 |        
    5120 |             MASTER- |   C |    60 | 18.5 |        
    5195 |             MASTER- |   C |    60 | 18.8 |        
    5195 |             MASTER- |   C |    60 | 18.5 |        
    5269 |             MASTER- |   C |    60 | 19.0 |        
    5269 |             MASTER- |   C |    60 | 18.5 |        
    5344 |             MASTER- |   C |    60 | 18.8 |        
    5344 |             MASTER- |   C |    60 | 18.6 |        
    5419 |             MASTER- |   C |    60 | 18.8 |        
    5419 |             MASTER- |   C |    60 | 18.5 |        
    5494 |             MASTER- |   C |    60 | 18.9 |        
    5494 |             MASTER- |   C |    60 | 18.5 |        
    5569 |             MASTER- |   C |    60 | 18.8 |        
    5569 |             MASTER- |   C |    60 | 18.5 |        
    5642 |             MASTER- |   C |    60 | 18.8 |        
    5642 |             MASTER- |   C |    60 | 18.5 |        
    5717 |             MASTER- |   C |    60 | 18.9 |        
    5717 |             MASTER- |   C |    60 | 18.6 |        
    5792 |             MASTER- |   C |    60 | 18.7 |        
    5792 |             MASTER- |   C |    60 | 18.4 |        
    5867 |             MASTER- |   C |    60 | 18.7 |        
    5867 |             MASTER- |   C |    60 | 18.5 |        
    5941 |             MASTER- |   C |    60 | 18.8 |        
    5941 |             MASTER- |   C |    60 | 18.5 |        
    6016 |             MASTER- |   C |    60 | 18.7 |        
    6016 |             MASTER- |   C |    60 | 18.5 |        
    6091 |             MASTER- |   C |    60 | 18.6 |        
    6091 |             MASTER- |   C |    60 | 18.5 |        
    6165 |             MASTER- |   C |    60 | 18.7 |        
    6165 |             MASTER- |   C |    60 | 18.5 |        
    6239 |             MASTER- |   C |    60 | 18.7 |        
    6239 |             MASTER- |   C |    60 | 18.5 |        
    6314 |             MASTER- |   C |    60 | 18.8 |        
    6314 |             MASTER- |   C |    60 | 18.3 |        
    6389 |             MASTER- |   C |    60 | 18.8 |        
    6389 |             MASTER- |   C |    60 | 18.5 |        
    6464 |             MASTER- |   C |    60 | 18.8 |        
    6464 |             MASTER- |   C |    60 | 18.6 |        
    6537 |             MASTER- |   C |    60 | 18.7 |        
    6537 |             MASTER- |   C |    60 | 18.6 |        
    6612 |             MASTER- |   C |    60 | 18.8 |        
    6612 |             MASTER- |   C |    60 | 18.4 |        
    6685 |             MASTER- |   C |    60 | 19.0 |        
    6685 |             MASTER- |   C |    60 | 18.6 |        
    6760 |             MASTER- |   C |    60 | 19.0 |        
    6760 |             MASTER- |   C |    60 | 18.5 |        
    6930 |             MASTER- |   C |    20 | 18.7 |        
    6930 |             MASTER- |   C |    20 | 18.5 |        
    7016 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
    7016 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    6964 |             MASTER- |   C |    20 | 19.0 |        
    6965 |             MASTER- |   C |    20 | 18.9 |        
    7001 |             MASTER- |   C |    20 | 18.7 |        
    7001 |             MASTER- |   C |    20 | 18.6 |        
    7037 |             MASTER- |   C |    20 | 18.9 |        
    7037 |             MASTER- |   C |    20 | 18.6 |        
    7072 |             MASTER- |   C |    20 | 18.9 |        
    7072 |             MASTER- |   C |    20 | 18.4 |        
    7107 |             MASTER- |   C |    20 | 18.7 |        
    7107 |             MASTER- |   C |    20 | 18.5 |        
    7216 |   MASTER-Kislovodsk |   C |   180 | 17.2 |        
    7216 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
    7143 |             MASTER- |   C |    20 | 18.8 |        
    7143 |             MASTER- |   C |    20 | 18.6 |        
    7178 |             MASTER- |   C |    20 | 18.7 |        
    7178 |             MASTER- |   C |    20 | 18.4 |        
    7213 |             MASTER- |   C |    20 | 18.8 |        
    7213 |             MASTER- |   C |    20 | 18.5 |        
    7250 |             MASTER- |   C |    20 | 18.8 |        
    7250 |             MASTER- |   C |    20 | 18.6 |        
    7285 |             MASTER- |   C |    20 | 18.8 |        
    7285 |             MASTER- |   C |    20 | 18.5 |        
    7319 |             MASTER- |   C |    20 | 18.7 |        
    7319 |             MASTER- |   C |    20 | 18.5 |        
    7417 |   MASTER-Kislovodsk |   C |   180 | 16.3 |        
    7417 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
    7524 |             MASTER- |   C |    20 | 18.9 |        
    7524 |             MASTER- |   C |    20 | 18.8 |        
    7617 |   MASTER-Kislovodsk |   C |   180 | 16.7 |        
    7617 |   MASTER-Kislovodsk |   C |   180 | 15.0 |        
    7558 |             MASTER- |   C |    20 | 18.7 |        
    7558 |             MASTER- |   C |    20 | 18.5 |        
    7592 |             MASTER- |   C |    20 | 18.8 |        
    7592 |             MASTER- |   C |    20 | 18.5 |        
    7627 |             MASTER- |   C |    20 | 18.6 |        
    7627 |             MASTER- |   C |    20 | 18.5 |        
    7663 |             MASTER- |   C |    20 | 18.6 |        
    7663 |             MASTER- |   C |    20 | 18.4 |        
    7698 |             MASTER- |   C |    20 | 18.8 |        
    7698 |             MASTER- |   C |    20 | 18.5 |        
    7733 |             MASTER- |   C |    20 | 18.7 |        
    7733 |             MASTER- |   C |    20 | 18.5 |        
    7818 |   MASTER-Kislovodsk |   C |   180 | 16.9 |        
    7818 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
    7763 |             MASTER- |   C |    10 | 18.5 |        
    7763 |             MASTER- |   C |    10 | 18.1 |        
    7796 |             MASTER- |   C |    10 | 18.4 |        
    7796 |             MASTER- |   C |    10 | 18.2 |        
    7822 |             MASTER- |   C |    10 | 18.4 |        
    7822 |             MASTER- |   C |    10 | 18.3 |        
    7856 |             MASTER- |   C |    10 | 18.4 |        
    7856 |             MASTER- |   C |    10 | 18.2 |        
    7882 |             MASTER- |   C |    10 | 18.5 |        
    7882 |             MASTER- |   C |    10 | 18.3 |        
    8018 |   MASTER-Kislovodsk |   C |   180 | 17.4 |        
    8018 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    8121 |             MASTER- |   C |    10 | 18.5 |        
    8122 |             MASTER- |   C |    10 | 18.1 |        
    8219 |   MASTER-Kislovodsk |   C |   180 | 17.3 |        
    8219 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    8153 |             MASTER- |   C |    10 | 18.5 |        
    8153 |             MASTER- |   C |    10 | 18.2 |        
    8178 |             MASTER- |   C |    10 | 18.4 |        
    8179 |             MASTER- |   C |    10 | 18.1 |        
    8203 |             MASTER- |   C |    10 | 18.5 |        
    8203 |             MASTER- |   C |    10 | 18.1 |        
    8228 |             MASTER- |   C |    10 | 18.4 |        
    8228 |             MASTER- |   C |    10 | 18.1 |        
    8260 |             MASTER- |   C |    10 | 18.5 |        
    8260 |             MASTER- |   C |    10 | 18.4 |        
    8285 |             MASTER- |   C |    10 | 18.5 |        
    8285 |             MASTER- |   C |    10 | 18.1 |        
    8310 |             MASTER- |   C |    10 | 18.5 |        
    8311 |             MASTER- |   C |    10 | 18.1 |        
    8419 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
    8419 |   MASTER-Kislovodsk |   C |   180 | 16.1 |        
    8343 |             MASTER- |   C |    10 | 18.2 |        
    8343 |             MASTER- |   C |    10 | 18.1 |        
    8368 |             MASTER- |   C |    10 | 18.5 |        
    8368 |             MASTER- |   C |    10 | 18.4 |        
    8400 |             MASTER- |   C |    10 | 18.5 |        
    8400 |             MASTER- |   C |    10 | 18.1 |        
    8918 |   MASTER-Kislovodsk |   C |   180 | 14.8 |        
    8918 |   MASTER-Kislovodsk |   C |   180 | 16.5 |        
    9118 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
    9118 |   MASTER-Kislovodsk |   C |   180 | 14.9 |        
    9319 |   MASTER-Kislovodsk |   C |   180 | 17.2 |        
    9319 |   MASTER-Kislovodsk |   C |   180 | 15.1 |        
    9520 |   MASTER-Kislovodsk |   C |   180 | 16.7 |        
    9720 |   MASTER-Kislovodsk |   C |   180 | 16.7 |        
    9720 |   MASTER-Kislovodsk |   C |   180 | 12.3 |        
   14701 |   MASTER-Kislovodsk |   C |   180 | 18.2 |        
   14881 |   MASTER-Kislovodsk |   C |   540 | 18.6 |  Coadd 
   14701 |   MASTER-Kislovodsk |   C |   180 | 12.3 |        
   14902 |   MASTER-Kislovodsk |   C |   180 | 17.6 |        
   14902 |   MASTER-Kislovodsk |   C |   180 | 14.2 |        
   15102 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
   15102 |   MASTER-Kislovodsk |   C |   180 | 14.8 |        
   15302 |   MASTER-Kislovodsk |   C |   180 | 17.9 |        
   15482 |   MASTER-Kislovodsk |   C |   540 | 18.8 |  Coadd 
   15302 |   MASTER-Kislovodsk |   C |   180 | 15.3 |        
   15502 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
   15502 |   MASTER-Kislovodsk |   C |   180 | 15.2 |        
   15703 |   MASTER-Kislovodsk |   C |   180 | 17.8 |        
   15703 |   MASTER-Kislovodsk |   C |   180 | 15.1 |        
   15903 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   15903 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
   16104 |   MASTER-Kislovodsk |   C |   180 | 18.4 |        
   16104 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4056
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 GRB210406.72 (trigger No 9126,08h 49m 50.12s , +76d 31m 56.6s, R=0.025) errorbox  10 sec after notice time and 2 sec after trigger time at 2021-04-06 17:11:57 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance = 34 deg. The sun  altitude  is -16.3 deg. 

The galactic latitude b = 33 deg., longitude l = 137 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1585518

We obtain a following upper limits.  

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

       8 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      26 |   MASTER-Kislovodsk |  P- |    10 | 14.5 |        
      44 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      67 |   MASTER-Kislovodsk |  P- |    20 | 16.7 |        
      94 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     124 |   MASTER-Kislovodsk |  P- |    80 | 17.3 |  Coadd 
     494 |   MASTER-Kislovodsk |  P- |   820 | 19.0 |  Coadd 
     127 |   MASTER-Kislovodsk |  P- |    30 | 16.8 |        
     165 |   MASTER-Kislovodsk |  P- |    30 | 17.0 |        
     208 |   MASTER-Kislovodsk |  P- |    40 | 16.9 |        
     263 |   MASTER-Kislovodsk |  P- |   150 | 17.3 |  Coadd 
     261 |   MASTER-Kislovodsk |  P- |    50 | 16.9 |        
     324 |   MASTER-Kislovodsk |  P- |    60 | 16.9 |        
     402 |   MASTER-Kislovodsk |  P- |    80 | 17.0 |        
     502 |   MASTER-Kislovodsk |  P- |   280 | 17.7 |  Coadd 
     495 |   MASTER-Kislovodsk |  P- |    90 | 17.0 |        
     603 |   MASTER-Kislovodsk |  P- |   110 | 17.3 |        
     736 |   MASTER-Kislovodsk |  P- |   140 | 17.4 |        
     898 |   MASTER-Kislovodsk |  P- |   170 | 17.4 |        
    1081 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    1282 |   MASTER-Kislovodsk |  P- |   180 | 17.6 |        
    1462 |   MASTER-Kislovodsk |  P- |   540 | 17.7 |  Coadd 
    1482 |   MASTER-Kislovodsk |  P- |   180 | 18.0 |        
    1683 |   MASTER-Kislovodsk |  P- |   180 | 15.8 |        
    5045 |             MASTER- |   C |    60 | 18.5 |        
    5045 |             MASTER- |   C |    60 | 18.5 |        
    5120 |             MASTER- |   C |    60 | 18.7 |        
    5120 |             MASTER- |   C |    60 | 18.5 |        
    5195 |             MASTER- |   C |    60 | 18.8 |        
    5195 |             MASTER- |   C |    60 | 18.5 |        
    5269 |             MASTER- |   C |    60 | 19.0 |        
    5269 |             MASTER- |   C |    60 | 18.5 |        
    5344 |             MASTER- |   C |    60 | 18.8 |        
    5344 |             MASTER- |   C |    60 | 18.6 |        
    5419 |             MASTER- |   C |    60 | 18.8 |        
    5419 |             MASTER- |   C |    60 | 18.5 |        
    5494 |             MASTER- |   C |    60 | 18.9 |        
    5494 |             MASTER- |   C |    60 | 18.5 |        
    5569 |             MASTER- |   C |    60 | 18.8 |        
    5569 |             MASTER- |   C |    60 | 18.5 |        
    5642 |             MASTER- |   C |    60 | 18.8 |        
    5642 |             MASTER- |   C |    60 | 18.5 |        
    5717 |             MASTER- |   C |    60 | 18.9 |        
    5717 |             MASTER- |   C |    60 | 18.6 |        
    5792 |             MASTER- |   C |    60 | 18.7 |        
    5792 |             MASTER- |   C |    60 | 18.4 |        
    5867 |             MASTER- |   C |    60 | 18.7 |        
    5867 |             MASTER- |   C |    60 | 18.5 |        
    5941 |             MASTER- |   C |    60 | 18.8 |        
    5941 |             MASTER- |   C |    60 | 18.5 |        
    6016 |             MASTER- |   C |    60 | 18.7 |        
    6016 |             MASTER- |   C |    60 | 18.5 |        
    6091 |             MASTER- |   C |    60 | 18.6 |        
    6091 |             MASTER- |   C |    60 | 18.5 |        
    6165 |             MASTER- |   C |    60 | 18.7 |        
    6165 |             MASTER- |   C |    60 | 18.5 |        
    6239 |             MASTER- |   C |    60 | 18.7 |        
    6239 |             MASTER- |   C |    60 | 18.5 |        
    6314 |             MASTER- |   C |    60 | 18.8 |        
    6314 |             MASTER- |   C |    60 | 18.3 |        
    6389 |             MASTER- |   C |    60 | 18.8 |        
    6389 |             MASTER- |   C |    60 | 18.5 |        
    6464 |             MASTER- |   C |    60 | 18.8 |        
    6464 |             MASTER- |   C |    60 | 18.6 |        
    6537 |             MASTER- |   C |    60 | 18.7 |        
    6537 |             MASTER- |   C |    60 | 18.6 |        
    6612 |             MASTER- |   C |    60 | 18.8 |        
    6612 |             MASTER- |   C |    60 | 18.4 |        
    6685 |             MASTER- |   C |    60 | 19.0 |        
    6685 |             MASTER- |   C |    60 | 18.6 |        
    6760 |             MASTER- |   C |    60 | 19.0 |        
    6760 |             MASTER- |   C |    60 | 18.5 |        
    6930 |             MASTER- |   C |    20 | 18.7 |        
    6930 |             MASTER- |   C |    20 | 18.5 |        
    7016 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
    7016 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    6964 |             MASTER- |   C |    20 | 19.0 |        
    6965 |             MASTER- |   C |    20 | 18.9 |        
    7001 |             MASTER- |   C |    20 | 18.7 |        
    7001 |             MASTER- |   C |    20 | 18.6 |        
    7037 |             MASTER- |   C |    20 | 18.9 |        
    7037 |             MASTER- |   C |    20 | 18.6 |        
    7072 |             MASTER- |   C |    20 | 18.9 |        
    7072 |             MASTER- |   C |    20 | 18.4 |        
    7107 |             MASTER- |   C |    20 | 18.7 |        
    7107 |             MASTER- |   C |    20 | 18.5 |        
    7216 |   MASTER-Kislovodsk |   C |   180 | 17.2 |        
    7216 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
    7143 |             MASTER- |   C |    20 | 18.8 |        
    7143 |             MASTER- |   C |    20 | 18.6 |        
    7178 |             MASTER- |   C |    20 | 18.7 |        
    7178 |             MASTER- |   C |    20 | 18.4 |        
    7213 |             MASTER- |   C |    20 | 18.8 |        
    7213 |             MASTER- |   C |    20 | 18.5 |        
    7250 |             MASTER- |   C |    20 | 18.8 |        
    7250 |             MASTER- |   C |    20 | 18.6 |        
    7285 |             MASTER- |   C |    20 | 18.8 |        
    7285 |             MASTER- |   C |    20 | 18.5 |        
    7319 |             MASTER- |   C |    20 | 18.7 |        
    7319 |             MASTER- |   C |    20 | 18.5 |        
    7417 |   MASTER-Kislovodsk |   C |   180 | 16.3 |        
    7417 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
    7524 |             MASTER- |   C |    20 | 18.9 |        
    7524 |             MASTER- |   C |    20 | 18.8 |        
    7617 |   MASTER-Kislovodsk |   C |   180 | 16.7 |        
    7617 |   MASTER-Kislovodsk |   C |   180 | 15.0 |        
    7558 |             MASTER- |   C |    20 | 18.7 |        
    7558 |             MASTER- |   C |    20 | 18.5 |        
    7592 |             MASTER- |   C |    20 | 18.8 |        
    7592 |             MASTER- |   C |    20 | 18.5 |        
    7627 |             MASTER- |   C |    20 | 18.6 |        
    7627 |             MASTER- |   C |    20 | 18.5 |        
    7663 |             MASTER- |   C |    20 | 18.6 |        
    7663 |             MASTER- |   C |    20 | 18.4 |        
    7698 |             MASTER- |   C |    20 | 18.8 |        
    7698 |             MASTER- |   C |    20 | 18.5 |        
    7733 |             MASTER- |   C |    20 | 18.7 |        
    7733 |             MASTER- |   C |    20 | 18.5 |        
    7818 |   MASTER-Kislovodsk |   C |   180 | 16.9 |        
    7818 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
    7763 |             MASTER- |   C |    10 | 18.5 |        
    7763 |             MASTER- |   C |    10 | 18.1 |        
    7796 |             MASTER- |   C |    10 | 18.4 |        
    7796 |             MASTER- |   C |    10 | 18.2 |        
    7822 |             MASTER- |   C |    10 | 18.4 |        
    7822 |             MASTER- |   C |    10 | 18.3 |        
    7856 |             MASTER- |   C |    10 | 18.4 |        
    7856 |             MASTER- |   C |    10 | 18.2 |        
    7882 |             MASTER- |   C |    10 | 18.5 |        
    7882 |             MASTER- |   C |    10 | 18.3 |        
    8018 |   MASTER-Kislovodsk |   C |   180 | 17.4 |        
    8018 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    8121 |             MASTER- |   C |    10 | 18.5 |        
    8122 |             MASTER- |   C |    10 | 18.1 |        
    8219 |   MASTER-Kislovodsk |   C |   180 | 17.3 |        
    8219 |   MASTER-Kislovodsk |   C |   180 | 16.2 |        
    8153 |             MASTER- |   C |    10 | 18.5 |        
    8153 |             MASTER- |   C |    10 | 18.2 |        
    8178 |             MASTER- |   C |    10 | 18.4 |        
    8179 |             MASTER- |   C |    10 | 18.1 |        
    8203 |             MASTER- |   C |    10 | 18.5 |        
    8203 |             MASTER- |   C |    10 | 18.1 |        
    8228 |             MASTER- |   C |    10 | 18.4 |        
    8228 |             MASTER- |   C |    10 | 18.1 |        
    8260 |             MASTER- |   C |    10 | 18.5 |        
    8260 |             MASTER- |   C |    10 | 18.4 |        
    8285 |             MASTER- |   C |    10 | 18.5 |        
    8285 |             MASTER- |   C |    10 | 18.1 |        
    8310 |             MASTER- |   C |    10 | 18.5 |        
    8311 |             MASTER- |   C |    10 | 18.1 |        
    8419 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
    8419 |   MASTER-Kislovodsk |   C |   180 | 16.1 |        
    8343 |             MASTER- |   C |    10 | 18.2 |        
    8343 |             MASTER- |   C |    10 | 18.1 |        
    8368 |             MASTER- |   C |    10 | 18.5 |        
    8368 |             MASTER- |   C |    10 | 18.4 |        
    8400 |             MASTER- |   C |    10 | 18.5 |        
    8400 |             MASTER- |   C |    10 | 18.1 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4055
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 GRB210406.72 (trigger No 9126,08h 49m 46.12s , +76d 30m 59.0s, R=0.0516667) errorbox  10 sec after notice time and 28 sec after trigger time at 2021-04-06 17:11:57 UT, with upper limit up to  17.0 mag. Observations started at twilight.  The observations began at zenith distance = 34 deg. The sun  altitude  is -16.3 deg. 

The galactic latitude b = 33 deg., longitude l = 137 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1585485

We obtain a following upper limits.  

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

      33 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      52 |   MASTER-Kislovodsk |  P- |    10 | 14.5 |        
      70 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      92 |   MASTER-Kislovodsk |  P- |    20 | 16.7 |        
     120 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     153 |   MASTER-Kislovodsk |  P- |    30 | 16.8 |        
     191 |   MASTER-Kislovodsk |  P- |    30 | 17.0 |        


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



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

  ID = 4054
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 GRB210406.72 (trigger No 9126,08h 49m 46.12s , +76d 30m 59.0s, R=0.0516667) errorbox  10 sec after notice time and 28 sec after trigger time at 2021-04-06 17:11:57 UT, with upper limit up to  17.0 mag. Observations started at twilight.  The observations began at zenith distance = 34 deg. The sun  altitude  is -16.3 deg. 

The galactic latitude b = 33 deg., longitude l = 137 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1585485

We obtain a following upper limits.  

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

      33 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      52 |   MASTER-Kislovodsk |  P- |    10 | 14.5 |        
      70 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      92 |   MASTER-Kislovodsk |  P- |    20 | 16.7 |        
     120 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     153 |   MASTER-Kislovodsk |  P- |    30 | 16.8 |        
     191 |   MASTER-Kislovodsk |  P- |    30 | 17.0 |        


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



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

  ID = 4053
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 GRB210406.72 (trigger No 9126,08h 49m 46.12s , +76d 30m 59.0s, R=0.0516667) errorbox  10 sec after notice time and 28 sec after trigger time at 2021-04-06 17:11:57 UT, with upper limit up to  17.0 mag. Observations started at twilight.  The observations began at zenith distance = 34 deg. The sun  altitude  is -16.3 deg. 

The galactic latitude b = 33 deg., longitude l = 137 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1585485

We obtain a following upper limits.  

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

      33 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      52 |   MASTER-Kislovodsk |  P- |    10 | 14.5 |        
      70 |   MASTER-Kislovodsk |  P- |    10 | 14.6 |        
      92 |   MASTER-Kislovodsk |  P- |    20 | 16.7 |        
     120 |   MASTER-Kislovodsk |  P- |    20 | 16.6 |        
     153 |   MASTER-Kislovodsk |  P- |    30 | 16.8 |        
     191 |   MASTER-Kislovodsk |  P- |    30 | 17.0 |        


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

MASTER, 2002-2024