MASTER Net MASTER Database: GRB210610.63 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 SWIFT GRB210610.63
Trignum 1054627
Trigger time 2021-06-10 15:03:43.38
Notice time 2021-06-10 15:04:05.408858
Coord, eb (13h 37m 08.40s , +14d 28m 48.0s) , 0.05
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)

All alerts for this trigger
id noticetime coord2000 satel errorbox type trigger seq trig_type links
2440168 2024-04-29 21:33:04.580984 13h 37m 08.40s +14d 28m 48.0s SWIFT 0.05 retraction 1054627 1 4044 retraction
1633185 2021-06-10 15:26:19.719167 13h 37m 07.68s +14d 27m 54.0s SWIFT 0.000111111 alert 1054627 1 81 alert
1633180 2021-06-10 15:25:43.727914 13h 37m 07.68s +14d 27m 54.0s SWIFT 0.000611111 alert 1054627 1 67 alert
1633168 2021-06-10 15:04:17.958978 13h 37m 08.40s +14d 28m 48.0s SWIFT 0.05 alert 1054627 1 61 alert

DAYS:

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

Synchronous WFC images
Distance datetime coord2000 observatory links
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2021-06-10 15:03:43 (JD 2459376.127581)

Siderial time 10.849233 h

Ra 13:37:08.40 Dec 14:28:48.00
(204.285000d, 14.480000d)

Rise 2021-06-11 10:13:05

Transit 2021-06-11 17:45:31

Set 2021-06-11 01:21:53

Amur

Object: Altitude: 37.12 Azimuth: 65.09

Sun: Altitude: -16.44 Azimuth: 174.10

Moon: Altitude: -15.15 Azimuth: 172.31

Tunka

Object: Altitude: 48.06 Azimuth: 35.94

Sun: Altitude: -10.50 Azimuth: 151.58

Moon: Altitude: -8.82 Azimuth: 150.21

Kislovodsk

Object: Altitude: 47.23 Azimuth: 301.68

Sun: Altitude: 16.47 Azimuth: 106.38

Moon: Altitude: 18.60 Azimuth: 106.04

Tavrida

Object: Altitude: 41.38 Azimuth: 293.81

Sun: Altitude: 22.62 Azimuth: 100.61

Moon: Altitude: 24.75 Azimuth: 100.27

SAAO

Object: Altitude: 17.16 Azimuth: 239.62

Sun: Altitude: 5.27 Azimuth: 121.59

Moon: Altitude: 5.96 Azimuth: 123.64

IAC

Object: Altitude: 1.96 Azimuth: 254.59

Sun: Altitude: 62.65 Azimuth: 85.79

Moon: Altitude: 64.73 Azimuth: 87.10

Argentina

Object: Altitude: -56.44 Azimuth: 293.74

Sun: Altitude: 30.92 Azimuth: 204.73

Moon: Altitude: 29.14 Azimuth: 206.14

Mexico

Object: Altitude: -43.55 Azimuth: 167.20

Sun: Altitude: 33.18 Azimuth: 261.25

Moon: Altitude: 31.95 Azimuth: 259.16

Ural

Object: Altitude: 44.91 Azimuth: 332.67

Sun: Altitude: 11.02 Azimuth: 115.63

Moon: Altitude: 12.96 Azimuth: 114.69

Vostryakovo

Object: Altitude: 38.22 Azimuth: 305.48

Sun: Altitude: 22.03 Azimuth: 99.04

Moon: Altitude: 24.05 Azimuth: 98.23

Gal. latitude: 72.899266 Gal. longitude: 346.358720

Dist. to Sun: 114.834074

Dist. to Moon: 112.681384

Moon coord.: (80.741887 d, 24.186040 d)

Sun coord.: (78.748883 d, 23.041545 d)

Lunar disk: 0.000353

Lunar phase: 177.847444

Lunar bright limb: 240.494455

No SN in this field

2021-06-10 15:04:05 (JD 2459376.127836)

Siderial time 10.855361 h

Ra 13:37:08.40 Dec 14:28:48.00
(204.285000d, 14.480000d)

Rise 2021-06-11 10:13:05

Transit 2021-06-11 17:45:31

Set 2021-06-11 01:21:53

Amur

Object: Altitude: 37.07 Azimuth: 65.18

Sun: Altitude: -16.44 Azimuth: 174.19

Moon: Altitude: -15.15 Azimuth: 172.39

Tunka

Object: Altitude: 48.02 Azimuth: 36.06

Sun: Altitude: -10.53 Azimuth: 151.66

Moon: Altitude: -8.85 Azimuth: 150.29

Kislovodsk

Object: Altitude: 47.29 Azimuth: 301.78

Sun: Altitude: 16.40 Azimuth: 106.44

Moon: Altitude: 18.54 Azimuth: 106.10

Tavrida

Object: Altitude: 41.44 Azimuth: 293.90

Sun: Altitude: 22.56 Azimuth: 100.67

Moon: Altitude: 24.69 Azimuth: 100.33

SAAO

Object: Altitude: 17.23 Azimuth: 239.56

Sun: Altitude: 5.20 Azimuth: 121.54

Moon: Altitude: 5.90 Azimuth: 123.59

IAC

Object: Altitude: 2.04 Azimuth: 254.63

Sun: Altitude: 62.57 Azimuth: 85.84

Moon: Altitude: 64.65 Azimuth: 87.15

Argentina

Object: Altitude: -56.37 Azimuth: 293.64

Sun: Altitude: 30.95 Azimuth: 204.64

Moon: Altitude: 29.18 Azimuth: 206.05

Mexico

Object: Altitude: -43.57 Azimuth: 167.32

Sun: Altitude: 33.26 Azimuth: 261.29

Moon: Altitude: 32.02 Azimuth: 259.19

Ural

Object: Altitude: 44.93 Azimuth: 332.79

Sun: Altitude: 10.97 Azimuth: 115.71

Moon: Altitude: 12.92 Azimuth: 114.76

Vostryakovo

Object: Altitude: 38.26 Azimuth: 305.58

Sun: Altitude: 21.98 Azimuth: 99.11

Moon: Altitude: 24.01 Azimuth: 98.30

Gal. latitude: 72.899266 Gal. longitude: 346.358720

Dist. to Sun: 114.833853

Dist. to Moon: 112.678521

Moon coord.: (80.745191 d, 24.186509 d)

Sun coord.: (78.749146 d, 23.041563 d)

Lunar disk: 0.000354

Lunar phase: 177.844851

Lunar bright limb: 240.522225

No SN in this field

2021-06-10 16:04:05 (JD 2459376.169502)

Siderial time 11.858099 h

Ra 13:37:08.40 Dec 14:28:48.00
(204.285000d, 14.480000d)

Rise 2021-06-11 10:13:05

Transit 2021-06-11 17:45:31

Set 2021-06-11 01:21:53

Amur

Object: Altitude: 27.95 Azimuth: 78.68

Sun: Altitude: -16.21 Azimuth: 188.57

Moon: Altitude: -15.20 Azimuth: 186.09

Tunka

Object: Altitude: 41.42 Azimuth: 54.40

Sun: Altitude: -13.93 Azimuth: 165.35

Moon: Altitude: -12.31 Azimuth: 163.27

Kislovodsk

Object: Altitude: 55.45 Azimuth: 321.25

Sun: Altitude: 6.32 Azimuth: 116.05

Moon: Altitude: 8.80 Azimuth: 115.31

Tavrida

Object: Altitude: 50.50 Azimuth: 310.41

Sun: Altitude: 12.30 Azimuth: 110.36

Moon: Altitude: 14.80 Azimuth: 109.66

SAAO

Object: Altitude: 27.51 Azimuth: 228.38

Sun: Altitude: -6.03 Azimuth: 113.52

Moon: Altitude: -4.79 Azimuth: 115.80

IAC

Object: Altitude: 14.99 Azimuth: 261.38

Sun: Altitude: 49.37 Azimuth: 93.16

Moon: Altitude: 51.91 Azimuth: 93.99

Argentina

Object: Altitude: -44.16 Azimuth: 281.08

Sun: Altitude: 34.64 Azimuth: 188.80

Moon: Altitude: 33.07 Azimuth: 191.28

Mexico

Object: Altitude: -44.15 Azimuth: 187.55

Sun: Altitude: 46.05 Azimuth: 268.06

Moon: Altitude: 44.35 Azimuth: 265.29

Ural

Object: Altitude: 47.31 Azimuth: 353.58

Sun: Altitude: 4.05 Azimuth: 127.75

Moon: Altitude: 6.20 Azimuth: 126.31

Vostryakovo

Object: Altitude: 44.37 Azimuth: 323.24

Sun: Altitude: 13.76 Azimuth: 110.77

Moon: Altitude: 16.08 Azimuth: 109.58

Gal. latitude: 72.899266 Gal. longitude: 346.358720

Dist. to Sun: 114.797830

Dist. to Moon: 112.209769

Moon coord.: (81.286202 d, 24.262389 d)

Sun coord.: (78.792317 d, 23.044647 d)

Lunar disk: 0.000509

Lunar phase: 177.414254

Lunar bright limb: 244.324413

No SN in this field

2024-05-20 04:09:58 (JD 2460450.673588)

Siderial time 22.561630 h

Ra 13:37:08.40 Dec 14:28:48.00
(204.285000d, 14.480000d)

Rise 2024-05-20 11:38:30

Transit 2024-05-20 19:10:56

Set 2024-05-20 02:47:19

Amur

Object: Altitude: -14.61 Azimuth: 224.04

Sun: Altitude: 58.42 Azimuth: 20.38

Moon: Altitude: -31.45 Azimuth: 242.12

Tunka

Object: Altitude: -21.56 Azimuth: 200.43

Sun: Altitude: 56.56 Azimuth: 337.04

Moon: Altitude: -41.96 Azimuth: 214.57

Kislovodsk

Object: Altitude: -20.82 Azimuth: 137.24

Sun: Altitude: 25.23 Azimuth: 265.84

Moon: Altitude: -43.22 Azimuth: 128.35

Tavrida

Object: Altitude: -15.73 Azimuth: 130.14

Sun: Altitude: 19.30 Azimuth: 260.60

Moon: Altitude: -37.63 Azimuth: 120.18

SAAO

Object: Altitude: -30.62 Azimuth: 88.21

Sun: Altitude: -15.01 Azimuth: 255.56

Moon: Altitude: -22.10 Azimuth: 63.56

IAC

Object: Altitude: 15.45 Azimuth: 98.38

Sun: Altitude: -23.57 Azimuth: 228.78

Moon: Altitude: -0.23 Azimuth: 80.52

Argentina

Object: Altitude: 36.88 Azimuth: 146.41

Sun: Altitude: -77.18 Azimuth: 24.49

Moon: Altitude: 51.59 Azimuth: 120.26

Mexico

Object: Altitude: 69.11 Azimuth: 319.40

Sun: Altitude: -22.07 Azimuth: 132.47

Moon: Altitude: 49.73 Azimuth: 347.39

Ural

Object: Altitude: -15.77 Azimuth: 155.91

Sun: Altitude: 34.57 Azimuth: 287.39

Moon: Altitude: -39.37 Azimuth: 156.35

Vostryakovo

Object: Altitude: -10.29 Azimuth: 135.26

Sun: Altitude: 22.84 Azimuth: 267.51

Moon: Altitude: -33.46 Azimuth: 130.34

Gal. latitude: 72.899266 Gal. longitude: 346.358720

Dist. to Sun: 132.769777

Dist. to Moon: 23.602929

Moon coord.: (198.622303 d, -8.444932 d)

Sun coord.: (57.099624 d, 20.009426 d)

Lunar disk: 0.889455

Lunar phase: 38.839127

Lunar bright limb: 291.524338

No SN in this field
Recent coverage and limits telegrams

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

  ID = 4421
TYPE = 35
DAYS = 1


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210610A ( K. L. Page et al., GCN 30160) errorbox  4610 sec after notice time and 4632 sec after trigger time at 2021-06-10 16:20:55 UT, with upper limit up to  21.1 mag. Observations started at twilight.  The observations began at zenith distance = 58 deg. The sun  altitude  is -8.5 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the SWIFT GRB 210610A errorbox  11309 sec after notice time and 11331 sec after trigger time at 2021-06-10 18:12:35 UT, with upper limit up to  20.5 mag. Observations started at twilight.  The observations began at zenith distance = 30 deg. The sun  altitude  is -12.3 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 210610A errorbox  13649 sec after notice time and 13671 sec after trigger time at 2021-06-10 18:51:34 UT, with upper limit up to  20.7 mag. Observations started at twilight.  The observations began at zenith distance = 31 deg. The sun  altitude  is -12.4 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 210610A errorbox  31997 sec after notice time and 32019 sec after trigger time at 2021-06-10 23:57:22 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 47 deg. The sun  altitude  is -28.8 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the SWIFT GRB 210610A errorbox  38275 sec after notice time and 38298 sec after trigger time at 2021-06-11 01:42:01 UT, with upper limit up to  17.8 mag. The observations began at zenith distance = 61 deg. The sun  altitude  is -38.0 deg. 

The galactic latitude b = 73 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1633161

We obtain a following upper limits.  

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

    4662 |         MASTER-SAAO |   C |    60 | 16.8 |        
    4742 |         MASTER-SAAO |   C |    60 | 16.9 |        
    4822 |         MASTER-SAAO |   C |    60 | 17.1 |        
    8217 |         MASTER-SAAO |   C |   180 | 20.4 |        
    8397 |         MASTER-SAAO |   C |   540 | 21.0 |  Coadd 
    8416 |         MASTER-SAAO |   C |   180 | 20.6 |        
    8616 |         MASTER-SAAO |   C |   180 | 20.6 |        
    8816 |         MASTER-SAAO |   C |   180 | 20.6 |        
    8996 |         MASTER-SAAO |   C |   540 | 21.1 |  Coadd 
    9015 |         MASTER-SAAO |   C |   180 | 20.7 |        
    9215 |         MASTER-SAAO |   C |   180 | 20.6 |        
    9415 |         MASTER-SAAO |   C |   180 | 20.6 |        
    9595 |         MASTER-SAAO |   C |   540 | 21.1 |  Coadd 
    9615 |         MASTER-SAAO |   C |   180 | 20.7 |        
    9814 |         MASTER-SAAO |   C |   180 | 20.6 |        
   10014 |         MASTER-SAAO |   C |   180 | 20.6 |        
   10214 |         MASTER-SAAO |   C |   180 | 19.4 |        
   10414 |         MASTER-SAAO |   C |   180 | 19.1 |        
   10614 |         MASTER-SAAO |   C |   180 | 19.1 |        
   10814 |         MASTER-SAAO |   C |   180 | 18.5 |        
   11013 |         MASTER-SAAO |   C |   180 | 18.6 |        
   11213 |         MASTER-SAAO |   C |   180 | 18.7 |        
   11413 |         MASTER-SAAO |   C |   180 | 18.9 |        
   11422 |   MASTER-Kislovodsk |   C |   180 | 14.8 |        
   11422 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
   11612 |         MASTER-SAAO |   C |   180 | 18.2 |        
   11622 |   MASTER-Kislovodsk |   C |   180 | 14.4 |        
   11622 |   MASTER-Kislovodsk |   C |   180 | 14.5 |        
   11812 |         MASTER-SAAO |   C |   180 | 18.6 |        
   12012 |         MASTER-SAAO |   C |   180 | 17.9 |        
   12212 |         MASTER-SAAO |   C |   180 | 18.5 |        
   12412 |         MASTER-SAAO |   C |   180 | 18.8 |        
   12612 |         MASTER-SAAO |   C |   180 | 18.5 |        
   12811 |         MASTER-SAAO |   C |   180 | 18.3 |        
   13011 |         MASTER-SAAO |   C |   180 | 18.5 |        
   13175 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   13175 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   13355 |   MASTER-Kislovodsk |   C |   540 | 20.3 |  Coadd 
   13211 |         MASTER-SAAO |   C |   180 | 18.4 |        
   13390 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   13570 |   MASTER-Kislovodsk |   C |   540 | 19.8 |  Coadd 
   13390 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   13590 |   MASTER-Kislovodsk |   C |   180 | 19.3 |        
   13590 |   MASTER-Kislovodsk |   C |   180 | 19.6 |        
   13711 |         MASTER-SAAO |   C |   180 | 18.3 |        
   13761 |      MASTER-Tavrida |   C |   180 | 18.5 |        
   13761 |      MASTER-Tavrida |   C |   180 | 18.6 |        
   13910 |         MASTER-SAAO |   C |   180 | 18.5 |        
   13921 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   13921 |   MASTER-Kislovodsk |   C |   180 | 19.6 |        
   14101 |   MASTER-Kislovodsk |   C |   540 | 20.0 |  Coadd 
   14110 |         MASTER-SAAO |   C |   180 | 18.8 |        
   14112 |      MASTER-Tavrida |   C |   180 | 19.2 |        
   14292 |      MASTER-Tavrida |   C |   540 | 20.2 |  Coadd 
   14112 |      MASTER-Tavrida |   C |   180 | 19.1 |        
   14292 |      MASTER-Tavrida |   C |   540 | 20.2 |  Coadd 
   14199 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   14379 |   MASTER-Kislovodsk |   C |   540 | 19.4 |  Coadd 
   14199 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   14310 |         MASTER-SAAO |   C |   180 | 18.7 |        
   14312 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   14312 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   14509 |         MASTER-SAAO |   C |   180 | 18.7 |        
   14511 |      MASTER-Tavrida |   C |   180 | 19.6 |        
   14511 |      MASTER-Tavrida |   C |   180 | 19.6 |        
   14512 |   MASTER-Kislovodsk |   C |   180 | 17.7 |        
   14512 |   MASTER-Kislovodsk |   C |   180 | 18.2 |        
   14709 |         MASTER-SAAO |   C |   180 | 18.8 |        
   14711 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   14891 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   14711 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   14891 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   14712 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   14713 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   14893 |   MASTER-Kislovodsk |   C |   540 | 20.3 |  Coadd 
   14909 |         MASTER-SAAO |   C |   180 | 18.7 |        
   14910 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   14910 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   14913 |   MASTER-Kislovodsk |   C |   180 | 19.3 |        
   15093 |   MASTER-Kislovodsk |   C |   540 | 20.1 |  Coadd 
   14913 |   MASTER-Kislovodsk |   C |   180 | 19.7 |        
   15109 |         MASTER-SAAO |   C |   180 | 18.8 |        
   15110 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15110 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   15113 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   15113 |   MASTER-Kislovodsk |   C |   180 | 19.9 |        
   15308 |         MASTER-SAAO |   C |   180 | 19.1 |        
   15309 |      MASTER-Tavrida |   C |   180 | 19.8 |        
   15489 |      MASTER-Tavrida |   C |   540 | 20.6 |  Coadd 
   15309 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   15489 |      MASTER-Tavrida |   C |   540 | 20.6 |  Coadd 
   15314 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   15314 |   MASTER-Kislovodsk |   C |   180 | 19.8 |        
   15494 |   MASTER-Kislovodsk |   C |   540 | 20.5 |  Coadd 
   15508 |         MASTER-SAAO |   C |   180 | 19.3 |        
   15508 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15508 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15514 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   15694 |   MASTER-Kislovodsk |   C |   540 | 20.1 |  Coadd 
   15514 |   MASTER-Kislovodsk |   C |   180 | 19.9 |        
   15708 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15708 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15708 |         MASTER-SAAO |   C |   180 | 19.4 |        
   15714 |   MASTER-Kislovodsk |   C |   180 | 19.5 |        
   15714 |   MASTER-Kislovodsk |   C |   180 | 20.0 |        
   15907 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16087 |      MASTER-Tavrida |   C |   540 | 20.7 |  Coadd 
   15907 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16087 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   15908 |         MASTER-SAAO |   C |   180 | 19.4 |        
   15914 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   15914 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   16094 |   MASTER-Kislovodsk |   C |   540 | 19.6 |  Coadd 
   16107 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16107 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16108 |         MASTER-SAAO |   C |   180 | 19.4 |        
   16115 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   16295 |   MASTER-Kislovodsk |   C |   540 | 18.8 |  Coadd 
   16115 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   16306 |      MASTER-Tavrida |   C |   180 | 20.0 |        
   16306 |      MASTER-Tavrida |   C |   180 | 19.8 |        
   16307 |         MASTER-SAAO |   C |   180 | 19.5 |        
   16315 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
   16315 |   MASTER-Kislovodsk |   C |   180 | 16.9 |        
   16506 |      MASTER-Tavrida |   C |   180 | 20.0 |        
   16686 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   16506 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   16686 |      MASTER-Tavrida |   C |   540 | 20.3 |  Coadd 
   16507 |         MASTER-SAAO |   C |   180 | 19.7 |        
   16516 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   16516 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   16696 |   MASTER-Kislovodsk |   C |   540 | 20.0 |  Coadd 
   16705 |      MASTER-Tavrida |   C |   180 | 20.0 |        
   16705 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   16707 |         MASTER-SAAO |   C |   180 | 19.7 |        
   16717 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   16897 |   MASTER-Kislovodsk |   C |   540 | 19.5 |  Coadd 
   16717 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   16904 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   16904 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   16917 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   16917 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   16944 |         MASTER-SAAO |   C |   180 | 19.9 |        
   17117 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   17117 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   17144 |         MASTER-SAAO |   C |   180 | 19.9 |        
   17685 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   17685 |      MASTER-Tavrida |   C |   180 | 19.5 |        
   21755 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   21755 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   21954 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   21954 |      MASTER-Tavrida |   C |   180 | 19.8 |        
   32049 |         MASTER-OAFA |   C |    60 | 18.7 |        
   33006 |         MASTER-OAFA |   C |    60 | 18.6 |        
   33965 |         MASTER-OAFA |   C |    60 | 18.7 |        
   38328 |          MASTER-IAC |   C |    60 | 17.8 |        
   39316 |          MASTER-IAC |   C |    60 | 17.5 |        
   40196 |          MASTER-IAC |   C |    60 | 17.0 |        
   41476 |          MASTER-IAC |   C |    60 | 17.6 |        
   41476 |          MASTER-IAC |   C |    60 | 15.4 |        
   42437 |          MASTER-IAC |   C |    60 | 17.3 |        
   43404 |          MASTER-IAC |   C |    60 | 16.5 |        
   49624 |         MASTER-OAFA |   C |    60 | 17.6 |        
   49704 |         MASTER-OAFA |   C |    60 | 17.9 |        
   50584 |         MASTER-OAFA |   C |    60 | 17.3 |        
   50663 |         MASTER-OAFA |   C |    60 | 17.2 |        
   51540 |         MASTER-OAFA |   C |    60 | 17.5 |        
   51619 |         MASTER-OAFA |   C |    60 | 17.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4418
TYPE = 35
DAYS = 0.5


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210610A ( K. L. Page et al., GCN 30160) errorbox  4610 sec after notice time and 4632 sec after trigger time at 2021-06-10 16:20:55 UT, with upper limit up to  21.1 mag. Observations started at twilight.  The observations began at zenith distance = 58 deg. The sun  altitude  is -8.5 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the SWIFT GRB 210610A errorbox  11309 sec after notice time and 11331 sec after trigger time at 2021-06-10 18:12:35 UT, with upper limit up to  20.5 mag. Observations started at twilight.  The observations began at zenith distance = 30 deg. The sun  altitude  is -12.3 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 210610A errorbox  13649 sec after notice time and 13671 sec after trigger time at 2021-06-10 18:51:34 UT, with upper limit up to  20.7 mag. Observations started at twilight.  The observations began at zenith distance = 31 deg. The sun  altitude  is -12.4 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 210610A errorbox  31997 sec after notice time and 32019 sec after trigger time at 2021-06-10 23:57:22 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 47 deg. The sun  altitude  is -28.8 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the SWIFT GRB 210610A errorbox  38275 sec after notice time and 38298 sec after trigger time at 2021-06-11 01:42:01 UT, with upper limit up to  17.8 mag. The observations began at zenith distance = 61 deg. The sun  altitude  is -38.0 deg. 

The galactic latitude b = 73 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1633161

We obtain a following upper limits.  

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

    4662 |         MASTER-SAAO |   C |    60 | 16.8 |        
    4742 |         MASTER-SAAO |   C |    60 | 16.9 |        
    4822 |         MASTER-SAAO |   C |    60 | 17.1 |        
    8217 |         MASTER-SAAO |   C |   180 | 20.4 |        
    8397 |         MASTER-SAAO |   C |   540 | 21.0 |  Coadd 
    8416 |         MASTER-SAAO |   C |   180 | 20.6 |        
    8616 |         MASTER-SAAO |   C |   180 | 20.6 |        
    8816 |         MASTER-SAAO |   C |   180 | 20.6 |        
    8996 |         MASTER-SAAO |   C |   540 | 21.1 |  Coadd 
    9015 |         MASTER-SAAO |   C |   180 | 20.7 |        
    9215 |         MASTER-SAAO |   C |   180 | 20.6 |        
    9415 |         MASTER-SAAO |   C |   180 | 20.6 |        
    9595 |         MASTER-SAAO |   C |   540 | 21.1 |  Coadd 
    9615 |         MASTER-SAAO |   C |   180 | 20.7 |        
    9814 |         MASTER-SAAO |   C |   180 | 20.6 |        
   10014 |         MASTER-SAAO |   C |   180 | 20.6 |        
   10214 |         MASTER-SAAO |   C |   180 | 19.4 |        
   10414 |         MASTER-SAAO |   C |   180 | 19.1 |        
   10614 |         MASTER-SAAO |   C |   180 | 19.1 |        
   10814 |         MASTER-SAAO |   C |   180 | 18.5 |        
   11013 |         MASTER-SAAO |   C |   180 | 18.6 |        
   11213 |         MASTER-SAAO |   C |   180 | 18.7 |        
   11413 |         MASTER-SAAO |   C |   180 | 18.9 |        
   11422 |   MASTER-Kislovodsk |   C |   180 | 14.8 |        
   11422 |   MASTER-Kislovodsk |   C |   180 | 15.4 |        
   11612 |         MASTER-SAAO |   C |   180 | 18.2 |        
   11622 |   MASTER-Kislovodsk |   C |   180 | 14.4 |        
   11622 |   MASTER-Kislovodsk |   C |   180 | 14.5 |        
   11812 |         MASTER-SAAO |   C |   180 | 18.6 |        
   12012 |         MASTER-SAAO |   C |   180 | 17.9 |        
   12212 |         MASTER-SAAO |   C |   180 | 18.5 |        
   12412 |         MASTER-SAAO |   C |   180 | 18.8 |        
   12612 |         MASTER-SAAO |   C |   180 | 18.5 |        
   12811 |         MASTER-SAAO |   C |   180 | 18.3 |        
   13011 |         MASTER-SAAO |   C |   180 | 18.5 |        
   13175 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   13175 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   13355 |   MASTER-Kislovodsk |   C |   540 | 20.3 |  Coadd 
   13211 |         MASTER-SAAO |   C |   180 | 18.4 |        
   13390 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   13570 |   MASTER-Kislovodsk |   C |   540 | 19.8 |  Coadd 
   13390 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   13590 |   MASTER-Kislovodsk |   C |   180 | 19.3 |        
   13590 |   MASTER-Kislovodsk |   C |   180 | 19.6 |        
   13711 |         MASTER-SAAO |   C |   180 | 18.3 |        
   13761 |      MASTER-Tavrida |   C |   180 | 18.5 |        
   13761 |      MASTER-Tavrida |   C |   180 | 18.6 |        
   13910 |         MASTER-SAAO |   C |   180 | 18.5 |        
   13921 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   13921 |   MASTER-Kislovodsk |   C |   180 | 19.6 |        
   14101 |   MASTER-Kislovodsk |   C |   540 | 20.0 |  Coadd 
   14110 |         MASTER-SAAO |   C |   180 | 18.8 |        
   14112 |      MASTER-Tavrida |   C |   180 | 19.2 |        
   14292 |      MASTER-Tavrida |   C |   540 | 20.2 |  Coadd 
   14112 |      MASTER-Tavrida |   C |   180 | 19.1 |        
   14292 |      MASTER-Tavrida |   C |   540 | 20.2 |  Coadd 
   14199 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   14379 |   MASTER-Kislovodsk |   C |   540 | 19.4 |  Coadd 
   14199 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   14310 |         MASTER-SAAO |   C |   180 | 18.7 |        
   14312 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   14312 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   14509 |         MASTER-SAAO |   C |   180 | 18.7 |        
   14511 |      MASTER-Tavrida |   C |   180 | 19.6 |        
   14511 |      MASTER-Tavrida |   C |   180 | 19.6 |        
   14512 |   MASTER-Kislovodsk |   C |   180 | 17.7 |        
   14512 |   MASTER-Kislovodsk |   C |   180 | 18.2 |        
   14709 |         MASTER-SAAO |   C |   180 | 18.8 |        
   14711 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   14891 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   14711 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   14891 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   14712 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   14713 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   14893 |   MASTER-Kislovodsk |   C |   540 | 20.3 |  Coadd 
   14909 |         MASTER-SAAO |   C |   180 | 18.7 |        
   14910 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   14910 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   14913 |   MASTER-Kislovodsk |   C |   180 | 19.3 |        
   15093 |   MASTER-Kislovodsk |   C |   540 | 20.1 |  Coadd 
   14913 |   MASTER-Kislovodsk |   C |   180 | 19.7 |        
   15109 |         MASTER-SAAO |   C |   180 | 18.8 |        
   15110 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15110 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   15113 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   15113 |   MASTER-Kislovodsk |   C |   180 | 19.9 |        
   15308 |         MASTER-SAAO |   C |   180 | 19.1 |        
   15309 |      MASTER-Tavrida |   C |   180 | 19.8 |        
   15489 |      MASTER-Tavrida |   C |   540 | 20.6 |  Coadd 
   15309 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   15489 |      MASTER-Tavrida |   C |   540 | 20.6 |  Coadd 
   15314 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   15314 |   MASTER-Kislovodsk |   C |   180 | 19.8 |        
   15494 |   MASTER-Kislovodsk |   C |   540 | 20.5 |  Coadd 
   15508 |         MASTER-SAAO |   C |   180 | 19.3 |        
   15508 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15508 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15514 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   15694 |   MASTER-Kislovodsk |   C |   540 | 20.1 |  Coadd 
   15514 |   MASTER-Kislovodsk |   C |   180 | 19.9 |        
   15708 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15708 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   15708 |         MASTER-SAAO |   C |   180 | 19.4 |        
   15714 |   MASTER-Kislovodsk |   C |   180 | 19.5 |        
   15714 |   MASTER-Kislovodsk |   C |   180 | 20.0 |        
   15907 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16087 |      MASTER-Tavrida |   C |   540 | 20.7 |  Coadd 
   15907 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16087 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   15908 |         MASTER-SAAO |   C |   180 | 19.4 |        
   15914 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   15914 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   16094 |   MASTER-Kislovodsk |   C |   540 | 19.6 |  Coadd 
   16107 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16107 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   16108 |         MASTER-SAAO |   C |   180 | 19.4 |        
   16115 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   16295 |   MASTER-Kislovodsk |   C |   540 | 18.8 |  Coadd 
   16115 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   16306 |      MASTER-Tavrida |   C |   180 | 20.0 |        
   16306 |      MASTER-Tavrida |   C |   180 | 19.8 |        
   16307 |         MASTER-SAAO |   C |   180 | 19.5 |        
   16315 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
   16315 |   MASTER-Kislovodsk |   C |   180 | 16.9 |        
   16506 |      MASTER-Tavrida |   C |   180 | 20.0 |        
   16686 |      MASTER-Tavrida |   C |   540 | 20.5 |  Coadd 
   16506 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   16686 |      MASTER-Tavrida |   C |   540 | 20.3 |  Coadd 
   16507 |         MASTER-SAAO |   C |   180 | 19.7 |        
   16516 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   16516 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   16696 |   MASTER-Kislovodsk |   C |   540 | 20.0 |  Coadd 
   16705 |      MASTER-Tavrida |   C |   180 | 20.0 |        
   16705 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   16707 |         MASTER-SAAO |   C |   180 | 19.7 |        
   16717 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   16897 |   MASTER-Kislovodsk |   C |   540 | 19.5 |  Coadd 
   16717 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   16904 |      MASTER-Tavrida |   C |   180 | 19.7 |        
   16904 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   16917 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   16917 |   MASTER-Kislovodsk |   C |   180 | 19.4 |        
   16944 |         MASTER-SAAO |   C |   180 | 19.9 |        
   17117 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   17117 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   17144 |         MASTER-SAAO |   C |   180 | 19.9 |        
   17685 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   17685 |      MASTER-Tavrida |   C |   180 | 19.5 |        
   21755 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   21755 |      MASTER-Tavrida |   C |   180 | 19.4 |        
   21954 |      MASTER-Tavrida |   C |   180 | 19.9 |        
   21954 |      MASTER-Tavrida |   C |   180 | 19.8 |        
   32049 |         MASTER-OAFA |   C |    60 | 18.7 |        
   33006 |         MASTER-OAFA |   C |    60 | 18.6 |        
   33965 |         MASTER-OAFA |   C |    60 | 18.7 |        
   38328 |          MASTER-IAC |   C |    60 | 17.8 |        
   39316 |          MASTER-IAC |   C |    60 | 17.5 |        
   40196 |          MASTER-IAC |   C |    60 | 17.0 |        
   41476 |          MASTER-IAC |   C |    60 | 17.6 |        
   41476 |          MASTER-IAC |   C |    60 | 15.4 |        
   42437 |          MASTER-IAC |   C |    60 | 17.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4409
TYPE = 35
DAYS = 0.1


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210610A ( K. L. Page et al., GCN 30160) errorbox  4610 sec after notice time and 4632 sec after trigger time at 2021-06-10 16:20:55 UT, with upper limit up to  21.0 mag. Observations started at twilight.  The observations began at zenith distance = 58 deg. The sun  altitude  is -8.5 deg. 

The galactic latitude b = 73 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1633161

We obtain a following upper limits.  

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

    4662 |         MASTER-SAAO |   C |    60 | 16.8 |        
    4742 |         MASTER-SAAO |   C |    60 | 16.9 |        
    4822 |         MASTER-SAAO |   C |    60 | 17.1 |        
    8217 |         MASTER-SAAO |   C |   180 | 20.4 |        
    8397 |         MASTER-SAAO |   C |   540 | 21.0 |  Coadd 
    8416 |         MASTER-SAAO |   C |   180 | 20.6 |        
    8616 |         MASTER-SAAO |   C |   180 | 20.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4408
TYPE = 35
DAYS = 0


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210610A ( K. L. Page et al., GCN 30160) errorbox  4610 sec after notice time and 4632 sec after trigger time at 2021-06-10 16:20:55 UT, with upper limit up to  17.1 mag. Observations started at twilight.  The observations began at zenith distance = 58 deg. The sun  altitude  is -8.5 deg. 

The galactic latitude b = 73 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1633161

We obtain a following upper limits.  

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

    4662 |         MASTER-SAAO |   C |    60 | 16.8 |        
    4742 |         MASTER-SAAO |   C |    60 | 16.9 |        
    4822 |         MASTER-SAAO |   C |    60 | 17.1 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4407
TYPE = 35
DAYS = 0


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210610A ( K. L. Page et al., GCN 30160) errorbox  4610 sec after notice time and 4632 sec after trigger time at 2021-06-10 16:20:55 UT, with upper limit up to  17.1 mag. Observations started at twilight.  The observations began at zenith distance = 58 deg. The sun  altitude  is -8.5 deg. 

The galactic latitude b = 73 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1633161

We obtain a following upper limits.  

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

    4662 |         MASTER-SAAO |   C |    60 | 16.8 |        
    4742 |         MASTER-SAAO |   C |    60 | 16.9 |        
    4822 |         MASTER-SAAO |   C |    60 | 17.1 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4406
TYPE = 34
DAYS = 0


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210610A ( K. L. Page et al., GCN 30160) errorbox  4610 sec after notice time and 4632 sec after trigger time at 2021-06-10 16:20:55 UT, with upper limit up to  17.1 mag. Observations started at twilight.  The observations began at zenith distance = 58 deg. The sun  altitude  is -8.5 deg. 

The galactic latitude b = 73 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1633161

We obtain a following upper limits.  

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

    4662 |         MASTER-SAAO |   C |    60 | 16.8 |        
    4742 |         MASTER-SAAO |   C |    60 | 16.9 |        
    4822 |         MASTER-SAAO |   C |    60 | 17.1 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2024