MASTER Net MASTER Database: GRB210730.21 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 FERMI GRB210730.21
Trignum 649313854
Trigger time 2021-07-30 04:57:29.03
Notice time 2021-07-30 16:00:50.631892
Coord, eb (09h 54m 55.20s , +73d 06m 00.0s) , 2.61
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You are viewing outdated information, relevant error box is here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
2545342 2024-07-30 04:13:03.481739 09h 54m 55.20s +73d 06m 00.0s FERMI 2.61 retraction 649313854 1 4044 retraction
1675897 2021-07-30 16:01:55.889695 09h 54m 55.20s +73d 06m 00.0s FERMI 2.61 alert 649313854 9 115 alert
1675489 2021-07-30 04:58:55.609224 09h 38m 07.20s +69d 19m 48.0s FERMI 2.79 alert 649313854 9 112 alert
1675474 2021-07-30 04:58:16.23041 09h 31m 31.92s +67d 25m 01.2s FERMI 4.62 alert 649313854 6 111 alert

DAYS:

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

Synchronous WFC images
Distance datetime coord2000 observatory camera links
155.9 2021-07-30 04:55:15.904 20h 49m 42.00s -50d 05m 25.0s OAFA 29008 Database OAFA
156.3 2021-07-30 04:55:58.025 21h 02m 06.00s -50d 05m 59.0s OAFA 111342 Database OAFA
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2021-07-30 04:57:29 (JD 2459425.706586)

Siderial time 4.003172 h

Ra 09:54:55.20 Dec 73:06:00.00
(148.730000d, 73.100000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 67.21 Azimuth: 179.11

Sun: Altitude: 54.25 Azimuth: 34.72

Moon: Altitude: -18.91 Azimuth: 124.12

Tunka

Object: Altitude: 66.52 Azimuth: 196.73

Sun: Altitude: 56.59 Azimuth: 353.33

Moon: Altitude: -4.36 Azimuth: 104.00

Kislovodsk

Object: Altitude: 43.19 Azimuth: 203.35

Sun: Altitude: 31.04 Azimuth: 273.58

Moon: Altitude: 35.90 Azimuth: 57.31

Tavrida

Object: Altitude: 41.69 Azimuth: 202.89

Sun: Altitude: 24.93 Azimuth: 268.11

Moon: Altitude: 40.15 Azimuth: 47.86

SAAO

Object: Altitude: -35.31 Azimuth: 200.08

Sun: Altitude: -6.67 Azimuth: 252.25

Moon: Altitude: 47.29 Azimuth: 147.47

IAC

Object: Altitude: 14.46 Azimuth: 190.46

Sun: Altitude: -18.02 Azimuth: 236.30

Moon: Altitude: 62.38 Azimuth: 324.10

Argentina

Object: Altitude: -47.92 Azimuth: 173.29

Sun: Altitude: -76.31 Azimuth: 344.86

Moon: Altitude: 15.13 Azimuth: 253.94

Mexico

Object: Altitude: 20.90 Azimuth: 164.93

Sun: Altitude: -28.82 Azimuth: 139.00

Moon: Altitude: -13.99 Azimuth: 255.08

Ural

Object: Altitude: 59.91 Azimuth: 212.19

Sun: Altitude: 38.02 Azimuth: 297.65

Moon: Altitude: 20.14 Azimuth: 67.02

Vostryakovo

Object: Altitude: 52.35 Azimuth: 208.41

Sun: Altitude: 26.97 Azimuth: 276.28

Moon: Altitude: 31.10 Azimuth: 46.37

Gal. latitude: 38.864089 Gal. longitude: 137.897471

Dist. to Sun: 55.654467

Dist. to Moon: 95.081728

Moon coord.: (21.758753 d, 5.130070 d)

Sun coord.: (129.364824 d, 18.534786 d)

Lunar disk: 0.629920

Lunar phase: 74.939419

Lunar bright limb: 69.255204

No SN in this field

2021-07-30 16:00:50 (JD 2459426.167245)

Siderial time 15.089275 h

Ra 09:54:55.20 Dec 73:06:00.00
(148.730000d, 73.100000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 33.72 Azimuth: 175.65

Sun: Altitude: -21.03 Azimuth: 186.50

Moon: Altitude: 18.06 Azimuth: 280.27

Tunka

Object: Altitude: 37.47 Azimuth: 167.28

Sun: Altitude: -18.02 Azimuth: 162.02

Moon: Altitude: 2.77 Azimuth: 261.39

Kislovodsk

Object: Altitude: 43.55 Azimuth: 156.57

Sun: Altitude: 4.74 Azimuth: 111.07

Moon: Altitude: -34.21 Azimuth: 209.67

Tavrida

Object: Altitude: 46.91 Azimuth: 155.85

Sun: Altitude: 10.84 Azimuth: 105.26

Moon: Altitude: -35.85 Azimuth: 199.55

SAAO

Object: Altitude: -23.12 Azimuth: 163.98

Sun: Altitude: -1.50 Azimuth: 110.96

Moon: Altitude: -64.99 Azimuth: 353.72

IAC

Object: Altitude: 43.50 Azimuth: 170.81

Sun: Altitude: 50.06 Azimuth: 85.18

Moon: Altitude: -41.02 Azimuth: 131.66

Argentina

Object: Altitude: -16.79 Azimuth: 188.56

Sun: Altitude: 38.79 Azimuth: 192.72

Moon: Altitude: -6.08 Azimuth: 95.06

Mexico

Object: Altitude: 35.25 Azimuth: 199.59

Sun: Altitude: 42.01 Azimuth: 272.63

Moon: Altitude: 36.60 Azimuth: 75.07

Ural

Object: Altitude: 50.95 Azimuth: 152.93

Sun: Altitude: 1.10 Azimuth: 123.45

Moon: Altitude: -17.17 Azimuth: 223.34

Vostryakovo

Object: Altitude: 55.32 Azimuth: 150.04

Sun: Altitude: 11.36 Azimuth: 106.04

Moon: Altitude: -25.03 Azimuth: 201.61

Gal. latitude: 38.864089 Gal. longitude: 137.897471

Dist. to Sun: 55.716212

Dist. to Moon: 91.571944

Moon coord.: (26.859475 d, 7.491522 d)

Sun coord.: (129.813989 d, 18.423132 d)

Lunar disk: 0.586216

Lunar phase: 80.070777

Lunar bright limb: 69.747072

No SN in this field

2021-07-30 17:00:50 (JD 2459426.208912)

Siderial time 16.092013 h

Ra 09:54:55.20 Dec 73:06:00.00
(148.730000d, 73.100000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 33.43 Azimuth: 180.88

Sun: Altitude: -18.72 Azimuth: 201.43

Moon: Altitude: 27.15 Azimuth: 292.47

Tunka

Object: Altitude: 35.82 Azimuth: 172.31

Sun: Altitude: -19.73 Azimuth: 176.95

Moon: Altitude: 11.92 Azimuth: 272.68

Kislovodsk

Object: Altitude: 39.35 Azimuth: 158.12

Sun: Altitude: -4.97 Azimuth: 121.48

Moon: Altitude: -27.64 Azimuth: 224.71

Tavrida

Object: Altitude: 42.59 Azimuth: 156.74

Sun: Altitude: 0.85 Azimuth: 115.46

Moon: Altitude: -30.83 Azimuth: 215.80

SAAO

Object: Altitude: -26.90 Azimuth: 161.58

Sun: Altitude: -13.60 Azimuth: 103.38

Moon: Altitude: -60.58 Azimuth: 323.26

IAC

Object: Altitude: 40.83 Azimuth: 166.15

Sun: Altitude: 36.86 Azimuth: 92.56

Moon: Altitude: -49.11 Azimuth: 148.70

Argentina

Object: Altitude: -15.36 Azimuth: 184.27

Sun: Altitude: 39.59 Azimuth: 174.36

Moon: Altitude: -18.57 Azimuth: 87.59

Mexico

Object: Altitude: 39.43 Azimuth: 198.04

Sun: Altitude: 54.74 Azimuth: 282.29

Moon: Altitude: 24.44 Azimuth: 84.16

Ural

Object: Altitude: 47.48 Azimuth: 156.97

Sun: Altitude: -5.16 Azimuth: 136.24

Moon: Altitude: -10.91 Azimuth: 236.77

Vostryakovo

Object: Altitude: 51.19 Azimuth: 152.40

Sun: Altitude: 3.47 Azimuth: 117.98

Moon: Altitude: -20.80 Azimuth: 216.63

Gal. latitude: 38.864089 Gal. longitude: 137.897471

Dist. to Sun: 55.721909

Dist. to Moon: 91.255149

Moon coord.: (27.321218 d, 7.701546 d)

Sun coord.: (129.854589 d, 18.412981 d)

Lunar disk: 0.582242

Lunar phase: 80.532756

Lunar bright limb: 69.803698

No SN in this field

2025-04-27 16:09:34 (JD 2460793.173310)

Siderial time 9.060560 h

Ra 09:54:55.20 Dec 73:06:00.00
(148.730000d, 73.100000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 51.08 Azimuth: 153.20

Sun: Altitude: -25.03 Azimuth: 191.61

Moon: Altitude: -22.23 Azimuth: 194.43

Tunka

Object: Altitude: 59.44 Azimuth: 152.97

Sun: Altitude: -23.19 Azimuth: 165.64

Moon: Altitude: -21.24 Azimuth: 169.18

Kislovodsk

Object: Altitude: 60.41 Azimuth: 184.65

Sun: Altitude: -1.43 Azimuth: 110.96

Moon: Altitude: -1.76 Azimuth: 114.77

Tavrida

Object: Altitude: 60.63 Azimuth: 189.65

Sun: Altitude: 4.67 Azimuth: 105.05

Moon: Altitude: 4.26 Azimuth: 108.86

SAAO

Object: Altitude: -17.40 Azimuth: 188.66

Sun: Altitude: -2.62 Azimuth: 104.88

Moon: Altitude: -6.41 Azimuth: 105.30

IAC

Object: Altitude: 33.63 Azimuth: 198.74

Sun: Altitude: 44.34 Azimuth: 81.76

Moon: Altitude: 42.64 Azimuth: 86.47

Argentina

Object: Altitude: -38.82 Azimuth: 198.90

Sun: Altitude: 43.89 Azimuth: 188.07

Moon: Altitude: 41.78 Azimuth: 183.73

Mexico

Object: Altitude: 14.97 Azimuth: 185.67

Sun: Altitude: 43.71 Azimuth: 280.73

Moon: Altitude: 47.47 Azimuth: 279.83

Ural

Object: Altitude: 73.53 Azimuth: 170.67

Sun: Altitude: -4.84 Azimuth: 125.12

Moon: Altitude: -4.05 Azimuth: 128.87

Vostryakovo

Object: Altitude: 71.54 Azimuth: 191.58

Sun: Altitude: 5.27 Azimuth: 107.02

Moon: Altitude: 5.59 Azimuth: 110.84

Gal. latitude: 38.864089 Gal. longitude: 137.897471

Dist. to Sun: 83.285906

Dist. to Moon: 81.775456

Moon coord.: (31.859990 d, 16.336839 d)

Sun coord.: (34.945685 d, 13.951919 d)

Lunar disk: 0.001125

Lunar phase: 176.156292

Lunar bright limb: 128.149340

No SN in this field
Recent coverage and limits telegrams

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

  ID = 4715
TYPE = 35
DAYS = 2


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the FERMI GRB 210730A ( J. Wood (NASA/MSFC) et al., GCN 30557) errorbox  47717 sec after notice time and 47748 sec after trigger time at 2021-07-30 18:13:17 UT, with upper limit up to  19.2 mag. Observations started at twilight.  The observations began at zenith distance = 52 deg. The sun  altitude  is -10.5 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB 210730A errorbox  64877 sec after notice time and 64908 sec after trigger time at 2021-07-30 22:59:17 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 76 deg. The sun  altitude  is -34.0 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the FERMI GRB 210730A errorbox  71483 sec after notice time and 71513 sec after trigger time at 2021-07-31 00:49:22 UT, with upper limit up to  19.5 mag. Observations started at twilight.  The observations began at zenith distance = 65 deg. The sun  altitude  is -11.7 deg. 

The galactic latitude b = 39 deg., longitude l = 138 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1675891

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   47778 | 2021-07-30 18:13:17 |      MASTER-Tavrida | (09h 49m 09.94s , +74d 53m 29.9s) |   C |    60 | 16.5 |        
   47857 | 2021-07-30 18:14:36 |      MASTER-Tavrida | (10h 20m 26.47s , +74d 55m 07.8s) |   C |    60 | 17.2 |        
   47937 | 2021-07-30 18:15:55 |      MASTER-Tavrida | (09h 26m 58.28s , +71d 05m 48.6s) |   C |    60 | 16.8 |        
   48016 | 2021-07-30 18:17:14 |      MASTER-Tavrida | (09h 52m 04.86s , +71d 06m 12.7s) |   C |    60 | 17.0 |        
   48095 | 2021-07-30 18:18:34 |      MASTER-Tavrida | (10h 29m 25.43s , +73d 03m 08.3s) |   C |    60 | 17.6 |        
   48174 | 2021-07-30 18:19:53 |      MASTER-Tavrida | (10h 57m 20.24s , +73d 06m 34.7s) |   C |    60 | 17.8 |        
   48254 | 2021-07-30 18:21:12 |      MASTER-Tavrida | (10h 06m 04.25s , +76d 46m 15.8s) |   C |    60 | 17.4 |        
   48570 | 2021-07-30 18:26:29 |      MASTER-Tavrida | (09h 42m 40.06s , +69d 13m 16.4s) |   C |    60 | 17.9 |        
   48649 | 2021-07-30 18:27:47 |      MASTER-Tavrida | (10h 48m 52.04s , +74d 56m 29.8s) |   C |    60 | 18.4 |        
   48807 | 2021-07-30 18:30:26 |      MASTER-Tavrida | (09h 49m 16.78s , +74d 53m 00.4s) |   C |    60 | 17.9 |        
   48886 | 2021-07-30 18:31:45 |      MASTER-Tavrida | (10h 20m 40.67s , +74d 53m 56.1s) |   C |    60 | 18.3 |        
   48965 | 2021-07-30 18:33:04 |      MASTER-Tavrida | (09h 27m 11.28s , +71d 04m 54.0s) |   C |    60 | 18.1 |        
   49044 | 2021-07-30 18:34:23 |      MASTER-Tavrida | (09h 52m 11.25s , +71d 05m 41.6s) |   C |    60 | 18.4 |        
   49123 | 2021-07-30 18:35:42 |      MASTER-Tavrida | (10h 29m 38.80s , +73d 02m 49.8s) |   C |    60 | 18.5 |        
   49202 | 2021-07-30 18:37:01 |      MASTER-Tavrida | (10h 57m 38.62s , +73d 04m 09.6s) |   C |    60 | 18.7 |        
   49281 | 2021-07-30 18:38:20 |      MASTER-Tavrida | (10h 06m 19.08s , +76d 45m 21.8s) |   C |    60 | 18.7 |        
   49518 | 2021-07-30 18:42:17 |      MASTER-Tavrida | (09h 42m 48.03s , +69d 10m 42.3s) |   C |    60 | 18.8 |        
   49598 | 2021-07-30 18:43:36 |      MASTER-Tavrida | (10h 49m 06.96s , +74d 57m 07.9s) |   C |    60 | 19.0 |        
   49756 | 2021-07-30 18:46:14 |      MASTER-Tavrida | (09h 49m 22.64s , +74d 52m 47.5s) |   C |    60 | 18.8 |        
   49835 | 2021-07-30 18:47:34 |      MASTER-Tavrida | (10h 20m 51.10s , +74d 53m 23.6s) |   C |    60 | 19.0 |        
   49914 | 2021-07-30 18:48:53 |      MASTER-Tavrida | (09h 27m 10.72s , +71d 02m 20.1s) |   C |    60 | 18.8 |        
   49993 | 2021-07-30 18:50:12 |      MASTER-Tavrida | (09h 52m 23.05s , +71d 03m 54.4s) |   C |    60 | 18.7 |        
   50073 | 2021-07-30 18:51:31 |      MASTER-Tavrida | (10h 29m 47.08s , +73d 01m 16.5s) |   C |    60 | 18.9 |        
   50152 | 2021-07-30 18:52:50 |      MASTER-Tavrida | (10h 57m 40.70s , +73d 02m 07.2s) |   C |    60 | 19.1 |        
   50231 | 2021-07-30 18:54:09 |      MASTER-Tavrida | (10h 06m 32.43s , +76d 46m 55.9s) |   C |    60 | 19.1 |        
   50468 | 2021-07-30 18:58:07 |      MASTER-Tavrida | (09h 42m 55.58s , +69d 10m 28.7s) |   C |    60 | 19.1 |        
   50547 | 2021-07-30 18:59:26 |      MASTER-Tavrida | (10h 49m 06.81s , +74d 53m 44.5s) |   C |    60 | 19.2 |        
   50766 | 2021-07-30 19:02:04 |      MASTER-Tavrida | (10h 02m 52.52s , +69d 18m 31.2s) |   C |   180 | 18.9 |        
   50984 | 2021-07-30 19:06:42 |      MASTER-Tavrida | (09h 34m 10.69s , +76d 45m 03.6s) |   C |    60 | 19.0 |        
   51376 | 2021-07-30 19:13:15 |      MASTER-Tavrida | (09h 04m 53.89s , +71d 01m 36.8s) |   C |    60 | 19.1 |        
   51753 | 2021-07-30 19:18:31 |      MASTER-Tavrida | (10h 03m 09.37s , +69d 17m 06.5s) |   C |   180 | 19.2 |        
   52050 | 2021-07-30 19:24:29 |      MASTER-Tavrida | (09h 34m 28.32s , +76d 45m 52.4s) |   C |    60 | 18.9 |        
   52367 | 2021-07-30 19:29:45 |      MASTER-Tavrida | (09h 04m 52.81s , +71d 03m 13.7s) |   C |    60 | 19.0 |        
   64998 | 2021-07-30 22:59:17 |          MASTER-IAC | (09h 54m 35.15s , +69d 44m 20.5s) |   C |   180 | 17.5 |        
   64998 | 2021-07-30 22:59:17 |          MASTER-IAC | (09h 56m 48.54s , +69d 39m 04.8s) |   C |   180 | 17.3 |        
   65178 | 2021-07-30 22:59:17 |          MASTER-IAC | (09h 56m 48.54s , +69d 39m 04.8s) |   C |   540 | 17.7 |  Coadd 
   65212 | 2021-07-30 23:02:51 |          MASTER-IAC | (09h 57m 33.21s , +69d 44m 38.2s) |   C |   180 | 17.2 |        
   65212 | 2021-07-30 23:02:51 |          MASTER-IAC | (09h 55m 17.18s , +69d 51m 01.5s) |   C |   180 | 16.8 |        
   65392 | 2021-07-30 23:02:51 |          MASTER-IAC | (09h 55m 17.18s , +69d 51m 01.4s) |   C |   540 | 17.5 |  Coadd 
   65423 | 2021-07-30 23:06:21 |          MASTER-IAC | (09h 54m 44.72s , +69d 42m 28.3s) |   C |   180 | 17.2 |        
   65423 | 2021-07-30 23:06:21 |          MASTER-IAC | (09h 56m 57.10s , +69d 36m 44.3s) |   C |   180 | 17.0 |        
   65633 | 2021-07-30 23:09:51 |          MASTER-IAC | (09h 57m 34.00s , +69d 43m 52.5s) |   C |   180 | 17.1 |        
   65633 | 2021-07-30 23:09:51 |          MASTER-IAC | (09h 55m 18.27s , +69d 50m 18.2s) |   C |   180 | 16.8 |        
   65842 | 2021-07-30 23:13:21 |          MASTER-IAC | (09h 54m 50.38s , +69d 44m 10.0s) |   C |   180 | 17.0 |        
   65842 | 2021-07-30 23:13:21 |          MASTER-IAC | (09h 57m 02.98s , +69d 38m 20.5s) |   C |   180 | 17.0 |        
   66052 | 2021-07-30 23:16:51 |          MASTER-IAC | (09h 57m 31.60s , +69d 43m 38.3s) |   C |   180 | 17.2 |        
   66052 | 2021-07-30 23:16:51 |          MASTER-IAC | (09h 55m 15.69s , +69d 50m 04.7s) |   C |   180 | 16.7 |        
   66261 | 2021-07-30 23:20:19 |          MASTER-IAC | (09h 54m 54.25s , +69d 44m 08.3s) |   C |   180 | 17.0 |        
   66261 | 2021-07-30 23:20:20 |          MASTER-IAC | (09h 57m 07.36s , +69d 38m 16.8s) |   C |   180 | 16.9 |        
   66476 | 2021-07-30 23:23:54 |          MASTER-IAC | (09h 57m 29.62s , +69d 44m 35.2s) |   C |   180 | 17.1 |        
   66476 | 2021-07-30 23:23:54 |          MASTER-IAC | (09h 55m 13.21s , +69d 51m 01.7s) |   C |   180 | 16.8 |        
   66686 | 2021-07-30 23:27:24 |          MASTER-IAC | (09h 54m 49.43s , +69d 44m 28.4s) |   C |   180 | 17.0 |        
   66686 | 2021-07-30 23:27:24 |          MASTER-IAC | (09h 57m 03.15s , +69d 38m 35.5s) |   C |   180 | 16.8 |        
   66897 | 2021-07-30 23:30:55 |          MASTER-IAC | (09h 57m 37.08s , +69d 44m 36.3s) |   C |   180 | 17.1 |        
   66897 | 2021-07-30 23:30:55 |          MASTER-IAC | (09h 55m 20.46s , +69d 51m 02.2s) |   C |   180 | 16.6 |        
   67105 | 2021-07-30 23:34:23 |          MASTER-IAC | (09h 54m 51.99s , +69d 42m 27.4s) |   C |   180 | 17.0 |        
   67105 | 2021-07-30 23:34:23 |          MASTER-IAC | (09h 57m 05.69s , +69d 36m 33.5s) |   C |   180 | 16.7 |        
   67320 | 2021-07-30 23:37:58 |          MASTER-IAC | (09h 57m 37.57s , +69d 44m 41.1s) |   C |   180 | 17.0 |        
   67320 | 2021-07-30 23:37:58 |          MASTER-IAC | (09h 55m 21.01s , +69d 51m 06.3s) |   C |   180 | 16.7 |        
   67468 | 2021-07-30 23:41:26 |          MASTER-IAC | (09h 28m 20.28s , +73d 24m 53.6s) |   C |    60 | 16.5 |        
   67468 | 2021-07-30 23:41:26 |          MASTER-IAC | (09h 56m 20.92s , +73d 20m 15.0s) |   C |    60 | 16.6 |        
   67558 | 2021-07-30 23:42:56 |          MASTER-IAC | (09h 45m 33.72s , +71d 30m 06.8s) |   C |    60 | 16.7 |        
   67558 | 2021-07-30 23:42:56 |          MASTER-IAC | (09h 20m 09.54s , +71d 35m 32.5s) |   C |    60 | 16.2 |        
   67647 | 2021-07-30 23:44:25 |          MASTER-IAC | (10h 07m 29.32s , +71d 31m 35.1s) |   C |    60 | 16.7 |        
   67647 | 2021-07-30 23:44:25 |          MASTER-IAC | (10h 32m 43.67s , +71d 26m 47.9s) |   C |    60 | 16.8 |        
   67736 | 2021-07-30 23:45:55 |          MASTER-IAC | (10h 12m 53.63s , +75d 18m 37.2s) |   C |    60 | 17.4 |        
   67736 | 2021-07-30 23:45:55 |          MASTER-IAC | (09h 41m 03.43s , +75d 24m 13.2s) |   C |    60 | 16.7 |        
   67826 | 2021-07-30 23:47:24 |          MASTER-IAC | (10h 21m 38.20s , +73d 25m 52.4s) |   C |    60 | 17.2 |        
   67826 | 2021-07-30 23:47:24 |          MASTER-IAC | (10h 49m 41.11s , +73d 21m 07.9s) |   C |    60 | 17.4 |        
   67916 | 2021-07-30 23:48:54 |          MASTER-IAC | (10h 20m 18.35s , +69d 37m 25.7s) |   C |    60 | 16.7 |        
   67916 | 2021-07-30 23:48:54 |          MASTER-IAC | (09h 57m 08.99s , +69d 42m 52.6s) |   C |    60 | 16.2 |        
   68004 | 2021-07-30 23:50:23 |          MASTER-IAC | (09h 35m 38.37s , +69d 30m 12.1s) |   C |    60 | 16.0 |        
   68094 | 2021-07-30 23:51:52 |          MASTER-IAC | (09h 12m 49.80s , +75d 17m 05.6s) |   C |    60 | 17.0 |        
   68191 | 2021-07-30 23:53:29 |          MASTER-IAC | (09h 03m 06.37s , +73d 19m 06.6s) |   C |    60 | 16.4 |        
   68277 | 2021-07-30 23:54:55 |          MASTER-IAC | (09h 57m 18.82s , +77d 17m 18.0s) |   C |    60 | 16.9 |        
   68367 | 2021-07-30 23:56:26 |          MASTER-IAC | (10h 40m 21.65s , +75d 19m 21.8s) |   C |    60 | 17.5 |        
   68522 | 2021-07-30 23:58:00 |          MASTER-IAC | (09h 57m 33.33s , +69d 45m 23.5s) |   C |   180 | 16.9 |        
   68522 | 2021-07-30 23:58:00 |          MASTER-IAC | (09h 55m 18.90s , +69d 51m 41.8s) |   C |   180 | 16.6 |        
   68670 | 2021-07-31 00:01:28 |          MASTER-IAC | (09h 28m 20.83s , +73d 24m 55.2s) |   C |    60 | 16.4 |        
   68670 | 2021-07-31 00:01:28 |          MASTER-IAC | (09h 56m 21.60s , +73d 20m 17.3s) |   C |    60 | 16.3 |        
   68760 | 2021-07-31 00:02:59 |          MASTER-IAC | (09h 45m 37.69s , +71d 30m 53.6s) |   C |    60 | 16.6 |        
   68760 | 2021-07-31 00:02:59 |          MASTER-IAC | (09h 20m 13.75s , +71d 36m 18.2s) |   C |    60 | 16.1 |        
   68852 | 2021-07-31 00:04:31 |          MASTER-IAC | (10h 07m 28.70s , +71d 29m 45.7s) |   C |    60 | 16.4 |        
   68852 | 2021-07-31 00:04:31 |          MASTER-IAC | (10h 32m 40.78s , +71d 25m 01.5s) |   C |    60 | 16.6 |        
   68943 | 2021-07-31 00:06:01 |          MASTER-IAC | (10h 13m 00.30s , +75d 18m 05.0s) |   C |    60 | 17.4 |        
   68943 | 2021-07-31 00:06:01 |          MASTER-IAC | (09h 41m 12.26s , +75d 23m 41.9s) |   C |    60 | 16.5 |        
   69033 | 2021-07-31 00:07:31 |          MASTER-IAC | (10h 21m 45.29s , +73d 25m 41.8s) |   C |    60 | 17.2 |        
   69033 | 2021-07-31 00:07:31 |          MASTER-IAC | (10h 49m 47.97s , +73d 21m 00.5s) |   C |    60 | 17.2 |        
   69123 | 2021-07-31 00:09:02 |          MASTER-IAC | (10h 20m 16.06s , +69d 36m 40.8s) |   C |    60 | 16.5 |        
   69123 | 2021-07-31 00:09:02 |          MASTER-IAC | (09h 57m 08.23s , +69d 42m 05.3s) |   C |    60 | 16.0 |        
   69212 | 2021-07-31 00:10:30 |          MASTER-IAC | (09h 35m 48.83s , +69d 32m 02.9s) |   C |    60 | 15.7 |        
   69301 | 2021-07-31 00:11:59 |          MASTER-IAC | (09h 12m 46.54s , +75d 18m 09.2s) |   C |    60 | 16.8 |        
   69389 | 2021-07-31 00:13:27 |          MASTER-IAC | (09h 03m 08.87s , +73d 19m 02.8s) |   C |    60 | 16.3 |        
   69475 | 2021-07-31 00:14:54 |          MASTER-IAC | (09h 57m 23.59s , +77d 18m 15.2s) |   C |    60 | 16.8 |        
   69565 | 2021-07-31 00:16:24 |          MASTER-IAC | (10h 40m 22.75s , +75d 17m 43.4s) |   C |    60 | 17.4 |        
   69717 | 2021-07-31 00:17:56 |          MASTER-IAC | (09h 57m 42.86s , +69d 44m 36.3s) |   C |   180 | 16.6 |        
   69717 | 2021-07-31 00:17:56 |          MASTER-IAC | (09h 55m 27.94s , +69d 50m 53.4s) |   C |   180 | 16.3 |        
   69866 | 2021-07-31 00:21:24 |          MASTER-IAC | (09h 28m 29.56s , +73d 24m 32.7s) |   C |    60 | 16.3 |        
   69866 | 2021-07-31 00:21:24 |          MASTER-IAC | (09h 56m 29.62s , +73d 19m 53.4s) |   C |    60 | 16.2 |        
   69956 | 2021-07-31 00:22:54 |          MASTER-IAC | (09h 45m 36.90s , +71d 30m 11.1s) |   C |    60 | 16.4 |        
   69956 | 2021-07-31 00:22:54 |          MASTER-IAC | (09h 20m 16.22s , +71d 35m 32.1s) |   C |    60 | 16.0 |        
   70046 | 2021-07-31 00:24:25 |          MASTER-IAC | (10h 07m 37.05s , +71d 31m 24.9s) |   C |    60 | 16.2 |        
   70046 | 2021-07-31 00:24:25 |          MASTER-IAC | (10h 32m 51.08s , +71d 26m 39.8s) |   C |    60 | 16.4 |        
   70136 | 2021-07-31 00:25:54 |          MASTER-IAC | (10h 12m 57.36s , +75d 18m 43.8s) |   C |    60 | 17.1 |        
   70136 | 2021-07-31 00:25:54 |          MASTER-IAC | (09h 41m 08.22s , +75d 24m 21.5s) |   C |    60 | 16.4 |        
   70226 | 2021-07-31 00:27:25 |          MASTER-IAC | (10h 21m 44.86s , +73d 25m 43.3s) |   C |    60 | 17.0 |        
   70226 | 2021-07-31 00:27:25 |          MASTER-IAC | (10h 49m 47.78s , +73d 21m 00.2s) |   C |    60 | 17.1 |        
   70317 | 2021-07-31 00:28:55 |          MASTER-IAC | (10h 20m 20.84s , +69d 37m 32.4s) |   C |    60 | 16.4 |        
   70317 | 2021-07-31 00:28:55 |          MASTER-IAC | (09h 57m 12.28s , +69d 42m 57.3s) |   C |    60 | 15.8 |        
   70405 | 2021-07-31 00:30:23 |          MASTER-IAC | (09h 35m 47.69s , +69d 30m 01.9s) |   C |    60 | 15.5 |        
   70495 | 2021-07-31 00:31:53 |          MASTER-IAC | (09h 12m 54.22s , +75d 17m 35.1s) |   C |    60 | 16.8 |        
   70584 | 2021-07-31 00:33:23 |          MASTER-IAC | (09h 03m 16.13s , +73d 18m 31.2s) |   C |    60 | 16.0 |        
   70671 | 2021-07-31 00:34:49 |          MASTER-IAC | (09h 57m 24.97s , +77d 17m 22.8s) |   C |    60 | 16.7 |        
   70762 | 2021-07-31 00:36:21 |          MASTER-IAC | (10h 40m 30.91s , +75d 19m 27.7s) |   C |    60 | 17.4 |        
   70917 | 2021-07-31 00:37:56 |          MASTER-IAC | (09h 57m 39.47s , +69d 44m 43.8s) |   C |   180 | 16.4 |        
   70917 | 2021-07-31 00:37:56 |          MASTER-IAC | (09h 55m 28.87s , +69d 50m 48.7s) |   C |   180 | 15.9 |        
   71156 | 2021-07-31 00:42:54 |          MASTER-IAC | (09h 24m 57.00s , +77d 12m 13.7s) |   C |    60 | 17.0 |        
   71604 | 2021-07-31 00:49:22 |   MASTER-Kislovodsk | (09h 57m 56.03s , +69d 18m 28.0s) |   C |   180 | 16.5 |        
   71804 | 2021-07-31 00:52:43 |   MASTER-Kislovodsk | (09h 58m 03.02s , +69d 17m 24.9s) |   C |   180 | 16.1 |        
   72082 | 2021-07-31 00:57:20 |          MASTER-IAC | (09h 55m 16.07s , +69d 42m 37.1s) |   C |   180 | 16.1 |        
   72082 | 2021-07-31 00:57:20 |          MASTER-IAC | (09h 57m 32.81s , +69d 36m 12.8s) |   C |   180 | 16.0 |        
   72232 | 2021-07-31 01:00:51 |          MASTER-IAC | (08h 57m 42.35s , +71d 32m 07.4s) |   C |    60 | 15.7 |        
   72331 | 2021-07-31 01:02:29 |          MASTER-IAC | (09h 23m 51.94s , +77d 05m 18.1s) |   C |    60 | 16.4 |        
   73272 | 2021-07-31 01:17:10 |          MASTER-IAC | (09h 55m 16.79s , +69d 43m 18.6s) |   C |   180 | 15.8 |        
   73272 | 2021-07-31 01:17:10 |          MASTER-IAC | (09h 57m 34.11s , +69d 36m 46.5s) |   C |   180 | 15.9 |        
   73496 | 2021-07-31 01:21:54 |          MASTER-IAC | (09h 23m 49.92s , +77d 06m 17.4s) |   C |    60 | 16.3 |        
  132583 | 2021-07-31 17:45:41 |   MASTER-Kislovodsk | (09h 58m 00.20s , +69d 36m 28.0s) |   C |   180 | 17.7 |        
  132583 | 2021-07-31 17:45:41 |   MASTER-Kislovodsk | (09h 58m 05.52s , +70d 01m 33.4s) |   C |   180 | 18.2 |        
  132723 | 2021-07-31 17:49:02 |   MASTER-Kislovodsk | (09h 44m 55.21s , +73d 16m 31.2s) |   C |    60 | 17.2 |        
  132723 | 2021-07-31 17:49:02 |   MASTER-Kislovodsk | (09h 30m 56.04s , +73d 36m 59.4s) |   C |    60 | 17.6 |        
  132803 | 2021-07-31 17:50:22 |   MASTER-Kislovodsk | (09h 58m 45.74s , +75d 11m 03.8s) |   C |    60 | 17.3 |        
  132803 | 2021-07-31 17:50:22 |   MASTER-Kislovodsk | (09h 42m 52.97s , +75d 31m 10.9s) |   C |    60 | 17.9 |        
  132883 | 2021-07-31 17:51:42 |   MASTER-Kislovodsk | (10h 22m 29.56s , +71d 25m 00.7s) |   C |    60 | 17.4 |        
  132883 | 2021-07-31 17:51:42 |   MASTER-Kislovodsk | (10h 09m 49.98s , +71d 45m 53.2s) |   C |    60 | 17.9 |        
  132963 | 2021-07-31 17:53:02 |   MASTER-Kislovodsk | (09h 34m 35.86s , +71d 22m 45.8s) |   C |    60 | 17.5 |        
  132963 | 2021-07-31 17:53:02 |   MASTER-Kislovodsk | (09h 22m 05.69s , +71d 43m 26.9s) |   C |    60 | 18.0 |        
  133043 | 2021-07-31 17:54:22 |   MASTER-Kislovodsk | (10h 38m 14.72s , +73d 19m 02.7s) |   C |    60 | 17.9 |        
  133043 | 2021-07-31 17:54:22 |   MASTER-Kislovodsk | (10h 24m 04.86s , +73d 39m 40.1s) |   C |    60 | 18.3 |        
  133124 | 2021-07-31 17:55:42 |   MASTER-Kislovodsk | (10h 10m 12.36s , +69d 31m 00.2s) |   C |    60 | 17.5 |        
  133124 | 2021-07-31 17:55:42 |   MASTER-Kislovodsk | (09h 58m 46.42s , +69d 52m 01.1s) |   C |    60 | 18.1 |        
  133204 | 2021-07-31 17:57:02 |   MASTER-Kislovodsk | (10h 17m 05.18s , +77d 06m 56.9s) |   C |    60 | 17.8 |        
  133204 | 2021-07-31 17:57:02 |   MASTER-Kislovodsk | (09h 58m 43.01s , +77d 26m 36.3s) |   C |    60 | 18.5 |        
  133284 | 2021-07-31 17:58:22 |   MASTER-Kislovodsk | (08h 58m 53.55s , +75d 10m 24.5s) |   C |    60 | 17.6 |        
  133364 | 2021-07-31 17:59:43 |   MASTER-Kislovodsk | (08h 51m 46.11s , +73d 15m 17.3s) |   C |    60 | 17.6 |        
  133444 | 2021-07-31 18:01:03 |   MASTER-Kislovodsk | (09h 26m 41.89s , +69d 28m 23.2s) |   C |    60 | 17.8 |        
  133444 | 2021-07-31 18:01:03 |   MASTER-Kislovodsk | (09h 15m 25.61s , +69d 49m 11.6s) |   C |    60 | 18.5 |        
  133524 | 2021-07-31 18:02:23 |   MASTER-Kislovodsk | (10h 42m 32.02s , +75d 33m 31.1s) |   C |    60 | 18.8 |        
  133745 | 2021-07-31 18:05:03 |   MASTER-Kislovodsk | (09h 57m 57.97s , +69d 35m 44.1s) |   C |   180 | 18.7 |        
  133745 | 2021-07-31 18:05:03 |   MASTER-Kislovodsk | (09h 58m 08.96s , +69d 59m 49.1s) |   C |   180 | 19.2 |        
  133885 | 2021-07-31 18:08:24 |   MASTER-Kislovodsk | (09h 44m 55.28s , +73d 17m 06.7s) |   C |    60 | 17.7 |        
  133885 | 2021-07-31 18:08:24 |   MASTER-Kislovodsk | (09h 30m 58.18s , +73d 37m 30.8s) |   C |    60 | 18.4 |        
  133965 | 2021-07-31 18:09:44 |   MASTER-Kislovodsk | (09h 58m 39.38s , +75d 12m 18.4s) |   C |    60 | 17.7 |        
  133965 | 2021-07-31 18:09:44 |   MASTER-Kislovodsk | (09h 42m 48.20s , +75d 32m 21.6s) |   C |    60 | 18.5 |        
  134046 | 2021-07-31 18:11:04 |   MASTER-Kislovodsk | (10h 22m 31.87s , +71d 23m 50.6s) |   C |    60 | 17.7 |        
  134046 | 2021-07-31 18:11:04 |   MASTER-Kislovodsk | (10h 09m 55.87s , +71d 44m 36.7s) |   C |    60 | 18.4 |        
  134126 | 2021-07-31 18:12:24 |   MASTER-Kislovodsk | (09h 34m 33.24s , +71d 21m 54.7s) |   C |    60 | 17.9 |        
  134126 | 2021-07-31 18:12:24 |   MASTER-Kislovodsk | (09h 22m 06.18s , +71d 42m 31.0s) |   C |    60 | 18.6 |        
  134206 | 2021-07-31 18:13:44 |   MASTER-Kislovodsk | (10h 38m 13.92s , +73d 17m 30.0s) |   C |    60 | 18.2 |        
  134206 | 2021-07-31 18:13:44 |   MASTER-Kislovodsk | (10h 24m 08.26s , +73d 38m 01.6s) |   C |    60 | 18.9 |        
  134286 | 2021-07-31 18:15:05 |   MASTER-Kislovodsk | (10h 10m 15.29s , +69d 30m 22.3s) |   C |    60 | 17.8 |        
  134286 | 2021-07-31 18:15:05 |   MASTER-Kislovodsk | (09h 58m 51.98s , +69d 51m 17.4s) |   C |    60 | 18.7 |        
  134366 | 2021-07-31 18:16:25 |   MASTER-Kislovodsk | (10h 17m 08.64s , +77d 04m 53.7s) |   C |    60 | 17.7 |        
  134366 | 2021-07-31 18:16:25 |   MASTER-Kislovodsk | (09h 58m 52.85s , +77d 24m 27.8s) |   C |    60 | 18.9 |        
  134460 | 2021-07-31 18:17:58 |   MASTER-Kislovodsk | (08h 58m 56.26s , +75d 10m 60.0s) |   C |    60 | 17.7 |        
  134540 | 2021-07-31 18:19:18 |   MASTER-Kislovodsk | (08h 51m 49.74s , +73d 15m 56.2s) |   C |    60 | 17.7 |        
  134620 | 2021-07-31 18:20:38 |   MASTER-Kislovodsk | (09h 26m 37.90s , +69d 29m 37.6s) |   C |    60 | 17.9 |        
  134620 | 2021-07-31 18:20:38 |   MASTER-Kislovodsk | (09h 15m 22.49s , +69d 50m 22.0s) |   C |    60 | 19.0 |        
  134700 | 2021-07-31 18:21:58 |   MASTER-Kislovodsk | (10h 42m 38.59s , +75d 32m 27.9s) |   C |    60 | 19.1 |        
  134920 | 2021-07-31 18:24:38 |   MASTER-Kislovodsk | (09h 57m 56.86s , +69d 33m 49.6s) |   C |   180 | 18.6 |        
  134920 | 2021-07-31 18:24:38 |   MASTER-Kislovodsk | (09h 58m 11.27s , +69d 57m 53.0s) |   C |   180 | 19.5 |        
  135060 | 2021-07-31 18:27:59 |   MASTER-Kislovodsk | (09h 45m 00.60s , +73d 17m 23.8s) |   C |    60 | 17.8 |        
  135060 | 2021-07-31 18:27:59 |   MASTER-Kislovodsk | (09h 31m 04.83s , +73d 37m 44.6s) |   C |    60 | 18.9 |        
  135140 | 2021-07-31 18:29:19 |   MASTER-Kislovodsk | (09h 58m 43.09s , +75d 10m 08.5s) |   C |    60 | 17.7 |        
  135140 | 2021-07-31 18:29:19 |   MASTER-Kislovodsk | (09h 42m 56.61s , +75d 30m 07.5s) |   C |    60 | 18.8 |        
  135220 | 2021-07-31 18:30:39 |   MASTER-Kislovodsk | (10h 22m 33.63s , +71d 24m 10.2s) |   C |    60 | 17.9 |        
  135220 | 2021-07-31 18:30:39 |   MASTER-Kislovodsk | (10h 09m 58.84s , +71d 44m 53.5s) |   C |    60 | 18.8 |        
  135316 | 2021-07-31 18:32:15 |   MASTER-Kislovodsk | (09h 34m 34.53s , +71d 22m 29.1s) |   C |    60 | 17.9 |        
  135316 | 2021-07-31 18:32:15 |   MASTER-Kislovodsk | (09h 22m 08.04s , +71d 43m 05.3s) |   C |    60 | 18.7 |        
  135396 | 2021-07-31 18:33:35 |   MASTER-Kislovodsk | (10h 38m 09.16s , +73d 18m 37.5s) |   C |    60 | 18.2 |        
  135397 | 2021-07-31 18:33:35 |   MASTER-Kislovodsk | (10h 24m 04.84s , +73d 39m 05.1s) |   C |    60 | 19.0 |        
  135477 | 2021-07-31 18:34:55 |   MASTER-Kislovodsk | (10h 10m 19.81s , +69d 30m 09.7s) |   C |    60 | 17.8 |        
  135477 | 2021-07-31 18:34:55 |   MASTER-Kislovodsk | (09h 58m 58.61s , +69d 51m 02.1s) |   C |    60 | 18.8 |        
  135557 | 2021-07-31 18:36:15 |   MASTER-Kislovodsk | (10h 17m 07.93s , +77d 04m 04.9s) |   C |    60 | 18.0 |        
  135557 | 2021-07-31 18:36:15 |   MASTER-Kislovodsk | (09h 58m 57.18s , +77d 23m 35.0s) |   C |    60 | 18.9 |        
  135637 | 2021-07-31 18:37:35 |   MASTER-Kislovodsk | (08h 58m 58.81s , +75d 08m 47.6s) |   C |    60 | 17.7 |        
  135717 | 2021-07-31 18:38:55 |   MASTER-Kislovodsk | (08h 51m 54.22s , +73d 16m 26.7s) |   C |    60 | 17.7 |        
  135797 | 2021-07-31 18:40:16 |   MASTER-Kislovodsk | (09h 26m 42.41s , +69d 27m 40.5s) |   C |    60 | 17.9 |        
  135797 | 2021-07-31 18:40:16 |   MASTER-Kislovodsk | (09h 15m 30.08s , +69d 48m 24.3s) |   C |    60 | 19.0 |        
  135878 | 2021-07-31 18:41:37 |   MASTER-Kislovodsk | (10h 42m 42.78s , +75d 32m 36.7s) |   C |    60 | 19.1 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4710
TYPE = 35
DAYS = 1


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the FERMI GRB 210730A ( J. Wood (NASA/MSFC) et al., GCN 30557) errorbox  47717 sec after notice time and 47748 sec after trigger time at 2021-07-30 18:13:17 UT, with upper limit up to  19.2 mag. Observations started at twilight.  The observations began at zenith distance = 52 deg. The sun  altitude  is -10.5 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB 210730A errorbox  64877 sec after notice time and 64908 sec after trigger time at 2021-07-30 22:59:17 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 76 deg. The sun  altitude  is -34.0 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the FERMI GRB 210730A errorbox  71483 sec after notice time and 71513 sec after trigger time at 2021-07-31 00:49:22 UT, with upper limit up to  16.5 mag. Observations started at twilight.  The observations began at zenith distance = 65 deg. The sun  altitude  is -11.7 deg. 

The galactic latitude b = 39 deg., longitude l = 138 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1675890

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   47778 | 2021-07-30 18:13:17 |      MASTER-Tavrida | (09h 49m 09.94s , +74d 53m 29.9s) |   C |    60 | 16.5 |        
   47857 | 2021-07-30 18:14:36 |      MASTER-Tavrida | (10h 20m 26.47s , +74d 55m 07.8s) |   C |    60 | 17.2 |        
   47937 | 2021-07-30 18:15:55 |      MASTER-Tavrida | (09h 26m 58.28s , +71d 05m 48.6s) |   C |    60 | 16.8 |        
   48016 | 2021-07-30 18:17:14 |      MASTER-Tavrida | (09h 52m 04.86s , +71d 06m 12.7s) |   C |    60 | 17.0 |        
   48095 | 2021-07-30 18:18:34 |      MASTER-Tavrida | (10h 29m 25.43s , +73d 03m 08.3s) |   C |    60 | 17.6 |        
   48174 | 2021-07-30 18:19:53 |      MASTER-Tavrida | (10h 57m 20.24s , +73d 06m 34.7s) |   C |    60 | 17.8 |        
   48254 | 2021-07-30 18:21:12 |      MASTER-Tavrida | (10h 06m 04.25s , +76d 46m 15.8s) |   C |    60 | 17.4 |        
   48570 | 2021-07-30 18:26:29 |      MASTER-Tavrida | (09h 42m 40.06s , +69d 13m 16.4s) |   C |    60 | 17.9 |        
   48649 | 2021-07-30 18:27:47 |      MASTER-Tavrida | (10h 48m 52.04s , +74d 56m 29.8s) |   C |    60 | 18.4 |        
   48807 | 2021-07-30 18:30:26 |      MASTER-Tavrida | (09h 49m 16.78s , +74d 53m 00.4s) |   C |    60 | 17.9 |        
   48886 | 2021-07-30 18:31:45 |      MASTER-Tavrida | (10h 20m 40.67s , +74d 53m 56.1s) |   C |    60 | 18.3 |        
   48965 | 2021-07-30 18:33:04 |      MASTER-Tavrida | (09h 27m 11.28s , +71d 04m 54.0s) |   C |    60 | 18.1 |        
   49044 | 2021-07-30 18:34:23 |      MASTER-Tavrida | (09h 52m 11.25s , +71d 05m 41.6s) |   C |    60 | 18.4 |        
   49123 | 2021-07-30 18:35:42 |      MASTER-Tavrida | (10h 29m 38.80s , +73d 02m 49.8s) |   C |    60 | 18.5 |        
   49202 | 2021-07-30 18:37:01 |      MASTER-Tavrida | (10h 57m 38.62s , +73d 04m 09.6s) |   C |    60 | 18.7 |        
   49281 | 2021-07-30 18:38:20 |      MASTER-Tavrida | (10h 06m 19.08s , +76d 45m 21.8s) |   C |    60 | 18.7 |        
   49518 | 2021-07-30 18:42:17 |      MASTER-Tavrida | (09h 42m 48.03s , +69d 10m 42.3s) |   C |    60 | 18.8 |        
   49598 | 2021-07-30 18:43:36 |      MASTER-Tavrida | (10h 49m 06.96s , +74d 57m 07.9s) |   C |    60 | 19.0 |        
   49756 | 2021-07-30 18:46:14 |      MASTER-Tavrida | (09h 49m 22.64s , +74d 52m 47.5s) |   C |    60 | 18.8 |        
   49835 | 2021-07-30 18:47:34 |      MASTER-Tavrida | (10h 20m 51.10s , +74d 53m 23.6s) |   C |    60 | 19.0 |        
   49914 | 2021-07-30 18:48:53 |      MASTER-Tavrida | (09h 27m 10.72s , +71d 02m 20.1s) |   C |    60 | 18.8 |        
   49993 | 2021-07-30 18:50:12 |      MASTER-Tavrida | (09h 52m 23.05s , +71d 03m 54.4s) |   C |    60 | 18.7 |        
   50073 | 2021-07-30 18:51:31 |      MASTER-Tavrida | (10h 29m 47.08s , +73d 01m 16.5s) |   C |    60 | 18.9 |        
   50152 | 2021-07-30 18:52:50 |      MASTER-Tavrida | (10h 57m 40.70s , +73d 02m 07.2s) |   C |    60 | 19.1 |        
   50231 | 2021-07-30 18:54:09 |      MASTER-Tavrida | (10h 06m 32.43s , +76d 46m 55.9s) |   C |    60 | 19.1 |        
   50468 | 2021-07-30 18:58:07 |      MASTER-Tavrida | (09h 42m 55.58s , +69d 10m 28.7s) |   C |    60 | 19.1 |        
   50547 | 2021-07-30 18:59:26 |      MASTER-Tavrida | (10h 49m 06.81s , +74d 53m 44.5s) |   C |    60 | 19.2 |        
   50766 | 2021-07-30 19:02:04 |      MASTER-Tavrida | (10h 02m 52.52s , +69d 18m 31.2s) |   C |   180 | 18.9 |        
   50984 | 2021-07-30 19:06:42 |      MASTER-Tavrida | (09h 34m 10.69s , +76d 45m 03.6s) |   C |    60 | 19.0 |        
   51376 | 2021-07-30 19:13:15 |      MASTER-Tavrida | (09h 04m 53.89s , +71d 01m 36.8s) |   C |    60 | 19.1 |        
   51753 | 2021-07-30 19:18:31 |      MASTER-Tavrida | (10h 03m 09.37s , +69d 17m 06.5s) |   C |   180 | 19.2 |        
   52050 | 2021-07-30 19:24:29 |      MASTER-Tavrida | (09h 34m 28.32s , +76d 45m 52.4s) |   C |    60 | 18.9 |        
   52367 | 2021-07-30 19:29:45 |      MASTER-Tavrida | (09h 04m 52.81s , +71d 03m 13.7s) |   C |    60 | 19.0 |        
   64998 | 2021-07-30 22:59:17 |          MASTER-IAC | (09h 54m 35.15s , +69d 44m 20.5s) |   C |   180 | 17.5 |        
   64998 | 2021-07-30 22:59:17 |          MASTER-IAC | (09h 56m 48.54s , +69d 39m 04.8s) |   C |   180 | 17.3 |        
   65178 | 2021-07-30 22:59:17 |          MASTER-IAC | (09h 56m 48.54s , +69d 39m 04.8s) |   C |   540 | 17.7 |  Coadd 
   65212 | 2021-07-30 23:02:51 |          MASTER-IAC | (09h 57m 33.21s , +69d 44m 38.2s) |   C |   180 | 17.2 |        
   65212 | 2021-07-30 23:02:51 |          MASTER-IAC | (09h 55m 17.18s , +69d 51m 01.5s) |   C |   180 | 16.8 |        
   65392 | 2021-07-30 23:02:51 |          MASTER-IAC | (09h 55m 17.18s , +69d 51m 01.4s) |   C |   540 | 17.5 |  Coadd 
   65423 | 2021-07-30 23:06:21 |          MASTER-IAC | (09h 54m 44.72s , +69d 42m 28.3s) |   C |   180 | 17.2 |        
   65423 | 2021-07-30 23:06:21 |          MASTER-IAC | (09h 56m 57.10s , +69d 36m 44.3s) |   C |   180 | 17.0 |        
   65633 | 2021-07-30 23:09:51 |          MASTER-IAC | (09h 57m 34.00s , +69d 43m 52.5s) |   C |   180 | 17.1 |        
   65633 | 2021-07-30 23:09:51 |          MASTER-IAC | (09h 55m 18.27s , +69d 50m 18.2s) |   C |   180 | 16.8 |        
   65842 | 2021-07-30 23:13:21 |          MASTER-IAC | (09h 54m 50.38s , +69d 44m 10.0s) |   C |   180 | 17.0 |        
   65842 | 2021-07-30 23:13:21 |          MASTER-IAC | (09h 57m 02.98s , +69d 38m 20.5s) |   C |   180 | 17.0 |        
   66052 | 2021-07-30 23:16:51 |          MASTER-IAC | (09h 57m 31.60s , +69d 43m 38.3s) |   C |   180 | 17.2 |        
   66052 | 2021-07-30 23:16:51 |          MASTER-IAC | (09h 55m 15.69s , +69d 50m 04.7s) |   C |   180 | 16.7 |        
   66261 | 2021-07-30 23:20:19 |          MASTER-IAC | (09h 54m 54.25s , +69d 44m 08.3s) |   C |   180 | 17.0 |        
   66261 | 2021-07-30 23:20:20 |          MASTER-IAC | (09h 57m 07.36s , +69d 38m 16.8s) |   C |   180 | 16.9 |        
   66476 | 2021-07-30 23:23:54 |          MASTER-IAC | (09h 57m 29.62s , +69d 44m 35.2s) |   C |   180 | 17.1 |        
   66476 | 2021-07-30 23:23:54 |          MASTER-IAC | (09h 55m 13.21s , +69d 51m 01.7s) |   C |   180 | 16.8 |        
   66686 | 2021-07-30 23:27:24 |          MASTER-IAC | (09h 54m 49.43s , +69d 44m 28.4s) |   C |   180 | 17.0 |        
   66686 | 2021-07-30 23:27:24 |          MASTER-IAC | (09h 57m 03.15s , +69d 38m 35.5s) |   C |   180 | 16.8 |        
   66897 | 2021-07-30 23:30:55 |          MASTER-IAC | (09h 57m 37.08s , +69d 44m 36.3s) |   C |   180 | 17.1 |        
   66897 | 2021-07-30 23:30:55 |          MASTER-IAC | (09h 55m 20.46s , +69d 51m 02.2s) |   C |   180 | 16.6 |        
   67105 | 2021-07-30 23:34:23 |          MASTER-IAC | (09h 54m 51.99s , +69d 42m 27.4s) |   C |   180 | 17.0 |        
   67105 | 2021-07-30 23:34:23 |          MASTER-IAC | (09h 57m 05.69s , +69d 36m 33.5s) |   C |   180 | 16.7 |        
   67320 | 2021-07-30 23:37:58 |          MASTER-IAC | (09h 57m 37.57s , +69d 44m 41.1s) |   C |   180 | 17.0 |        
   67320 | 2021-07-30 23:37:58 |          MASTER-IAC | (09h 55m 21.01s , +69d 51m 06.3s) |   C |   180 | 16.7 |        
   67468 | 2021-07-30 23:41:26 |          MASTER-IAC | (09h 28m 20.28s , +73d 24m 53.6s) |   C |    60 | 16.5 |        
   67468 | 2021-07-30 23:41:26 |          MASTER-IAC | (09h 56m 20.92s , +73d 20m 15.0s) |   C |    60 | 16.6 |        
   67558 | 2021-07-30 23:42:56 |          MASTER-IAC | (09h 45m 33.72s , +71d 30m 06.8s) |   C |    60 | 16.7 |        
   67558 | 2021-07-30 23:42:56 |          MASTER-IAC | (09h 20m 09.54s , +71d 35m 32.5s) |   C |    60 | 16.2 |        
   67647 | 2021-07-30 23:44:25 |          MASTER-IAC | (10h 07m 29.32s , +71d 31m 35.1s) |   C |    60 | 16.7 |        
   67647 | 2021-07-30 23:44:25 |          MASTER-IAC | (10h 32m 43.67s , +71d 26m 47.9s) |   C |    60 | 16.8 |        
   67736 | 2021-07-30 23:45:55 |          MASTER-IAC | (10h 12m 53.63s , +75d 18m 37.2s) |   C |    60 | 17.4 |        
   67736 | 2021-07-30 23:45:55 |          MASTER-IAC | (09h 41m 03.43s , +75d 24m 13.2s) |   C |    60 | 16.7 |        
   67826 | 2021-07-30 23:47:24 |          MASTER-IAC | (10h 21m 38.20s , +73d 25m 52.4s) |   C |    60 | 17.2 |        
   67826 | 2021-07-30 23:47:24 |          MASTER-IAC | (10h 49m 41.11s , +73d 21m 07.9s) |   C |    60 | 17.4 |        
   67916 | 2021-07-30 23:48:54 |          MASTER-IAC | (10h 20m 18.35s , +69d 37m 25.7s) |   C |    60 | 16.7 |        
   67916 | 2021-07-30 23:48:54 |          MASTER-IAC | (09h 57m 08.99s , +69d 42m 52.6s) |   C |    60 | 16.2 |        
   68004 | 2021-07-30 23:50:23 |          MASTER-IAC | (09h 35m 38.37s , +69d 30m 12.1s) |   C |    60 | 16.0 |        
   68094 | 2021-07-30 23:51:52 |          MASTER-IAC | (09h 12m 49.80s , +75d 17m 05.6s) |   C |    60 | 17.0 |        
   68191 | 2021-07-30 23:53:29 |          MASTER-IAC | (09h 03m 06.37s , +73d 19m 06.6s) |   C |    60 | 16.4 |        
   68277 | 2021-07-30 23:54:55 |          MASTER-IAC | (09h 57m 18.82s , +77d 17m 18.0s) |   C |    60 | 16.9 |        
   68367 | 2021-07-30 23:56:26 |          MASTER-IAC | (10h 40m 21.65s , +75d 19m 21.8s) |   C |    60 | 17.5 |        
   68522 | 2021-07-30 23:58:00 |          MASTER-IAC | (09h 57m 33.33s , +69d 45m 23.5s) |   C |   180 | 16.9 |        
   68522 | 2021-07-30 23:58:00 |          MASTER-IAC | (09h 55m 18.90s , +69d 51m 41.8s) |   C |   180 | 16.6 |        
   68670 | 2021-07-31 00:01:28 |          MASTER-IAC | (09h 28m 20.83s , +73d 24m 55.2s) |   C |    60 | 16.4 |        
   68670 | 2021-07-31 00:01:28 |          MASTER-IAC | (09h 56m 21.60s , +73d 20m 17.3s) |   C |    60 | 16.3 |        
   68760 | 2021-07-31 00:02:59 |          MASTER-IAC | (09h 45m 37.69s , +71d 30m 53.6s) |   C |    60 | 16.6 |        
   68760 | 2021-07-31 00:02:59 |          MASTER-IAC | (09h 20m 13.75s , +71d 36m 18.2s) |   C |    60 | 16.1 |        
   68852 | 2021-07-31 00:04:31 |          MASTER-IAC | (10h 07m 28.70s , +71d 29m 45.7s) |   C |    60 | 16.4 |        
   68852 | 2021-07-31 00:04:31 |          MASTER-IAC | (10h 32m 40.78s , +71d 25m 01.5s) |   C |    60 | 16.6 |        
   68943 | 2021-07-31 00:06:01 |          MASTER-IAC | (10h 13m 00.30s , +75d 18m 05.0s) |   C |    60 | 17.4 |        
   68943 | 2021-07-31 00:06:01 |          MASTER-IAC | (09h 41m 12.26s , +75d 23m 41.9s) |   C |    60 | 16.5 |        
   69033 | 2021-07-31 00:07:31 |          MASTER-IAC | (10h 21m 45.29s , +73d 25m 41.8s) |   C |    60 | 17.2 |        
   69033 | 2021-07-31 00:07:31 |          MASTER-IAC | (10h 49m 47.97s , +73d 21m 00.5s) |   C |    60 | 17.2 |        
   69123 | 2021-07-31 00:09:02 |          MASTER-IAC | (10h 20m 16.06s , +69d 36m 40.8s) |   C |    60 | 16.5 |        
   69123 | 2021-07-31 00:09:02 |          MASTER-IAC | (09h 57m 08.23s , +69d 42m 05.3s) |   C |    60 | 16.0 |        
   69212 | 2021-07-31 00:10:30 |          MASTER-IAC | (09h 35m 48.83s , +69d 32m 02.9s) |   C |    60 | 15.7 |        
   69301 | 2021-07-31 00:11:59 |          MASTER-IAC | (09h 12m 46.54s , +75d 18m 09.2s) |   C |    60 | 16.8 |        
   69389 | 2021-07-31 00:13:27 |          MASTER-IAC | (09h 03m 08.87s , +73d 19m 02.8s) |   C |    60 | 16.3 |        
   69475 | 2021-07-31 00:14:54 |          MASTER-IAC | (09h 57m 23.59s , +77d 18m 15.2s) |   C |    60 | 16.8 |        
   69565 | 2021-07-31 00:16:24 |          MASTER-IAC | (10h 40m 22.75s , +75d 17m 43.4s) |   C |    60 | 17.4 |        
   69717 | 2021-07-31 00:17:56 |          MASTER-IAC | (09h 57m 42.86s , +69d 44m 36.3s) |   C |   180 | 16.6 |        
   69717 | 2021-07-31 00:17:56 |          MASTER-IAC | (09h 55m 27.94s , +69d 50m 53.4s) |   C |   180 | 16.3 |        
   69866 | 2021-07-31 00:21:24 |          MASTER-IAC | (09h 28m 29.56s , +73d 24m 32.7s) |   C |    60 | 16.3 |        
   69866 | 2021-07-31 00:21:24 |          MASTER-IAC | (09h 56m 29.62s , +73d 19m 53.4s) |   C |    60 | 16.2 |        
   69956 | 2021-07-31 00:22:54 |          MASTER-IAC | (09h 45m 36.90s , +71d 30m 11.1s) |   C |    60 | 16.4 |        
   69956 | 2021-07-31 00:22:54 |          MASTER-IAC | (09h 20m 16.22s , +71d 35m 32.1s) |   C |    60 | 16.0 |        
   70046 | 2021-07-31 00:24:25 |          MASTER-IAC | (10h 07m 37.05s , +71d 31m 24.9s) |   C |    60 | 16.2 |        
   70046 | 2021-07-31 00:24:25 |          MASTER-IAC | (10h 32m 51.08s , +71d 26m 39.8s) |   C |    60 | 16.4 |        
   70136 | 2021-07-31 00:25:54 |          MASTER-IAC | (10h 12m 57.36s , +75d 18m 43.8s) |   C |    60 | 17.1 |        
   70136 | 2021-07-31 00:25:54 |          MASTER-IAC | (09h 41m 08.22s , +75d 24m 21.5s) |   C |    60 | 16.4 |        
   70226 | 2021-07-31 00:27:25 |          MASTER-IAC | (10h 21m 44.86s , +73d 25m 43.3s) |   C |    60 | 17.0 |        
   70226 | 2021-07-31 00:27:25 |          MASTER-IAC | (10h 49m 47.78s , +73d 21m 00.2s) |   C |    60 | 17.1 |        
   70317 | 2021-07-31 00:28:55 |          MASTER-IAC | (10h 20m 20.84s , +69d 37m 32.4s) |   C |    60 | 16.4 |        
   70317 | 2021-07-31 00:28:55 |          MASTER-IAC | (09h 57m 12.28s , +69d 42m 57.3s) |   C |    60 | 15.8 |        
   70405 | 2021-07-31 00:30:23 |          MASTER-IAC | (09h 35m 47.69s , +69d 30m 01.9s) |   C |    60 | 15.5 |        
   70495 | 2021-07-31 00:31:53 |          MASTER-IAC | (09h 12m 54.22s , +75d 17m 35.1s) |   C |    60 | 16.8 |        
   70584 | 2021-07-31 00:33:23 |          MASTER-IAC | (09h 03m 16.13s , +73d 18m 31.2s) |   C |    60 | 16.0 |        
   70671 | 2021-07-31 00:34:49 |          MASTER-IAC | (09h 57m 24.97s , +77d 17m 22.8s) |   C |    60 | 16.7 |        
   70762 | 2021-07-31 00:36:21 |          MASTER-IAC | (10h 40m 30.91s , +75d 19m 27.7s) |   C |    60 | 17.4 |        
   70917 | 2021-07-31 00:37:56 |          MASTER-IAC | (09h 57m 39.47s , +69d 44m 43.8s) |   C |   180 | 16.4 |        
   70917 | 2021-07-31 00:37:56 |          MASTER-IAC | (09h 55m 28.87s , +69d 50m 48.7s) |   C |   180 | 15.9 |        
   71156 | 2021-07-31 00:42:54 |          MASTER-IAC | (09h 24m 57.00s , +77d 12m 13.7s) |   C |    60 | 17.0 |        
   71604 | 2021-07-31 00:49:22 |   MASTER-Kislovodsk | (09h 57m 56.03s , +69d 18m 28.0s) |   C |   180 | 16.5 |        
   71804 | 2021-07-31 00:52:43 |   MASTER-Kislovodsk | (09h 58m 03.02s , +69d 17m 24.9s) |   C |   180 | 16.1 |        
   72082 | 2021-07-31 00:57:20 |          MASTER-IAC | (09h 55m 16.07s , +69d 42m 37.1s) |   C |   180 | 16.1 |        
   72082 | 2021-07-31 00:57:20 |          MASTER-IAC | (09h 57m 32.81s , +69d 36m 12.8s) |   C |   180 | 16.0 |        
   72232 | 2021-07-31 01:00:51 |          MASTER-IAC | (08h 57m 42.35s , +71d 32m 07.4s) |   C |    60 | 15.7 |        
   72331 | 2021-07-31 01:02:29 |          MASTER-IAC | (09h 23m 51.94s , +77d 05m 18.1s) |   C |    60 | 16.4 |        
   73272 | 2021-07-31 01:17:10 |          MASTER-IAC | (09h 55m 16.79s , +69d 43m 18.6s) |   C |   180 | 15.8 |        
   73272 | 2021-07-31 01:17:10 |          MASTER-IAC | (09h 57m 34.11s , +69d 36m 46.5s) |   C |   180 | 15.9 |        
   73496 | 2021-07-31 01:21:54 |          MASTER-IAC | (09h 23m 49.92s , +77d 06m 17.4s) |   C |    60 | 16.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4703
TYPE = 35
DAYS = 0


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the FERMI GRB210730.21 (trigger No 649313854,09h 54m 55.20s , +73d 06m 00.0s, R=2.61) errorbox  47717 sec after notice time and 47748 sec after trigger time at 2021-07-30 18:13:17 UT, with upper limit up to  17.8 mag. Observations started at twilight.  The observations began at zenith distance = 52 deg. The sun  altitude  is -10.5 deg. 

The galactic latitude b = 39 deg., longitude l = 138 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1675890

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   47778 | 2021-07-30 18:13:17 |      MASTER-Tavrida | (09h 49m 09.94s , +74d 53m 29.9s) |   C |    60 | 16.5 |        
   47857 | 2021-07-30 18:14:36 |      MASTER-Tavrida | (10h 20m 26.47s , +74d 55m 07.8s) |   C |    60 | 17.2 |        
   47937 | 2021-07-30 18:15:55 |      MASTER-Tavrida | (09h 26m 58.28s , +71d 05m 48.6s) |   C |    60 | 16.8 |        
   48016 | 2021-07-30 18:17:14 |      MASTER-Tavrida | (09h 52m 04.86s , +71d 06m 12.7s) |   C |    60 | 17.0 |        
   48095 | 2021-07-30 18:18:34 |      MASTER-Tavrida | (10h 29m 25.43s , +73d 03m 08.3s) |   C |    60 | 17.6 |        
   48174 | 2021-07-30 18:19:53 |      MASTER-Tavrida | (10h 57m 20.24s , +73d 06m 34.7s) |   C |    60 | 17.8 |        
   48254 | 2021-07-30 18:21:12 |      MASTER-Tavrida | (10h 06m 04.25s , +76d 46m 15.8s) |   C |    60 | 17.4 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4702
TYPE = 35
DAYS = 0


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the FERMI GRB210730.21 (trigger No 649313854,09h 54m 55.20s , +73d 06m 00.0s, R=2.61) errorbox  47717 sec after notice time and 47748 sec after trigger time at 2021-07-30 18:13:17 UT, with upper limit up to  17.8 mag. Observations started at twilight.  The observations began at zenith distance = 52 deg. The sun  altitude  is -10.5 deg. 

The galactic latitude b = 39 deg., longitude l = 138 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1675890

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   47778 | 2021-07-30 18:13:17 |      MASTER-Tavrida | (09h 49m 09.94s , +74d 53m 29.9s) |   C |    60 | 16.5 |        
   47857 | 2021-07-30 18:14:36 |      MASTER-Tavrida | (10h 20m 26.47s , +74d 55m 07.8s) |   C |    60 | 17.2 |        
   47937 | 2021-07-30 18:15:55 |      MASTER-Tavrida | (09h 26m 58.28s , +71d 05m 48.6s) |   C |    60 | 16.8 |        
   48016 | 2021-07-30 18:17:14 |      MASTER-Tavrida | (09h 52m 04.86s , +71d 06m 12.7s) |   C |    60 | 17.0 |        
   48095 | 2021-07-30 18:18:34 |      MASTER-Tavrida | (10h 29m 25.43s , +73d 03m 08.3s) |   C |    60 | 17.6 |        
   48174 | 2021-07-30 18:19:53 |      MASTER-Tavrida | (10h 57m 20.24s , +73d 06m 34.7s) |   C |    60 | 17.8 |        
   48254 | 2021-07-30 18:21:12 |      MASTER-Tavrida | (10h 06m 04.25s , +76d 46m 15.8s) |   C |    60 | 17.4 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 4701
TYPE = 34
DAYS = 0


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the FERMI GRB210730.21 (trigger No 649313854,09h 54m 55.20s , +73d 06m 00.0s, R=2.61) errorbox  47717 sec after notice time and 47748 sec after trigger time at 2021-07-30 18:13:17 UT, with upper limit up to  17.8 mag. Observations started at twilight.  The observations began at zenith distance = 52 deg. The sun  altitude  is -10.5 deg. 

The galactic latitude b = 39 deg., longitude l = 138 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1675890

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   47778 | 2021-07-30 18:13:17 |      MASTER-Tavrida | (09h 49m 09.94s , +74d 53m 29.9s) |   C |    60 | 16.5 |        
   47857 | 2021-07-30 18:14:36 |      MASTER-Tavrida | (10h 20m 26.47s , +74d 55m 07.8s) |   C |    60 | 17.2 |        
   47937 | 2021-07-30 18:15:55 |      MASTER-Tavrida | (09h 26m 58.28s , +71d 05m 48.6s) |   C |    60 | 16.8 |        
   48016 | 2021-07-30 18:17:14 |      MASTER-Tavrida | (09h 52m 04.86s , +71d 06m 12.7s) |   C |    60 | 17.0 |        
   48095 | 2021-07-30 18:18:34 |      MASTER-Tavrida | (10h 29m 25.43s , +73d 03m 08.3s) |   C |    60 | 17.6 |        
   48174 | 2021-07-30 18:19:53 |      MASTER-Tavrida | (10h 57m 20.24s , +73d 06m 34.7s) |   C |    60 | 17.8 |        
   48254 | 2021-07-30 18:21:12 |      MASTER-Tavrida | (10h 06m 04.25s , +76d 46m 15.8s) |   C |    60 | 17.4 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025