MASTER Net MASTER Database: GRB210731.09 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 GRB210731.09
Trignum 649390368
Trigger time 2021-07-31 02:12:43.48
Notice time 2021-07-31 02:22:15.938716
Coord, eb (02h 23m 52.80s , +22d 58m 48.0s) , 3.07
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You are viewing outdated information, relevant error box is here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
2456395 2024-05-14 15:59:32.894317 02h 12m 50.40s +24d 21m 36.0s FERMI 2.48 retraction 649390368 1 4044 retraction
1676428 2021-07-31 03:47:52.93391 02h 20m 36.00s +22d 17m 24.0s FERMI 2.11 alert 649390368 11 115 alert
1676354 2021-07-31 02:17:11.620457 02h 13m 26.40s +24d 01m 12.0s FERMI 1.79 alert 649390368 13 112 alert
1676348 2021-07-31 02:16:45.731937 02h 16m 04.08s +19d 51m 00.0s FERMI 8.52 alert 649390368 9 111 alert

DAYS:

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

Synchronous WFC images
Distance datetime coord2000 observatory links
116.3 2021-07-31 02:10:43.209 19h 29m 56.00s -55d 47m 14.0s OAFA Database OAFA
89.7 2021-07-31 02:11:14.221 17h 48m 24.00s +56d 18m 37.0s IAC Database IAC
Errorbox center visibility at MASTER facilities
trigger notice notice+1hr now

2021-07-31 02:12:43 (JD 2459426.592164)

Siderial time 1.315252 h

Ra 02:23:52.80 Dec 22:58:48.00
( 35.970000d, 22.980000d)

Rise 2021-07-30 21:39:11

Transit 2021-07-31 06:17:30

Set 2021-07-31 14:55:49

Amur

Object: Altitude: 27.79 Azimuth: 93.21

Sun: Altitude: 54.01 Azimuth: 325.29

Moon: Altitude: 15.02 Azimuth: 86.97

Tunka

Object: Altitude: 42.74 Azimuth: 71.64

Sun: Altitude: 41.43 Azimuth: 296.35

Moon: Altitude: 29.53 Azimuth: 65.80

Kislovodsk

Object: Altitude: 67.23 Azimuth: 332.12

Sun: Altitude: 1.89 Azimuth: 246.19

Moon: Altitude: 55.33 Azimuth: 347.91

Tavrida

Object: Altitude: 62.87 Azimuth: 316.74

Sun: Altitude: -3.11 Azimuth: 240.21

Moon: Altitude: 52.43 Azimuth: 334.49

SAAO

Object: Altitude: 26.27 Azimuth: 214.05

Sun: Altitude: -40.86 Azimuth: 273.24

Moon: Altitude: 39.89 Azimuth: 218.04

IAC

Object: Altitude: 27.22 Azimuth: 257.19

Sun: Altitude: -41.07 Azimuth: 199.50

Moon: Altitude: 25.63 Azimuth: 272.76

Argentina

Object: Altitude: -39.35 Azimuth: 265.09

Sun: Altitude: -53.73 Azimuth: 77.30

Moon: Altitude: -29.44 Azimuth: 277.16

Mexico

Object: Altitude: -33.90 Azimuth: 197.53

Sun: Altitude: 0.00 Azimuth: 111.52

Moon: Altitude: -44.99 Azimuth: 208.70

Ural

Object: Altitude: 55.69 Azimuth: 9.31

Sun: Altitude: 16.05 Azimuth: 260.95

Moon: Altitude: 41.93 Azimuth: 13.41

Vostryakovo

Object: Altitude: 55.48 Azimuth: 333.31

Sun: Altitude: 4.10 Azimuth: 243.20

Moon: Altitude: 43.30 Azimuth: 344.11

Gal. latitude: -34.655737 Gal. longitude: 149.757826

Dist. to Sun: 86.685228

Dist. to Moon: 14.023159

Moon coord.: (31.576819 d, 9.602033 d)

Sun coord.: (130.227819 d, 18.319200 d)

Lunar disk: 0.545601

Lunar phase: 84.767245

Lunar bright limb: 70.417254

No SN in this field

2021-07-31 02:22:15 (JD 2459426.598785)

Siderial time 1.474576 h

Ra 02:23:52.80 Dec 22:58:48.00
( 35.970000d, 22.980000d)

Rise 2021-07-30 21:39:11

Transit 2021-07-31 06:17:30

Set 2021-07-31 14:55:49

Amur

Object: Altitude: 26.27 Azimuth: 94.99

Sun: Altitude: 54.84 Azimuth: 328.92

Moon: Altitude: 13.56 Azimuth: 88.79

Tunka

Object: Altitude: 41.33 Azimuth: 73.91

Sun: Altitude: 42.73 Azimuth: 298.84

Moon: Altitude: 28.24 Azimuth: 67.95

Kislovodsk

Object: Altitude: 67.96 Azimuth: 337.57

Sun: Altitude: 3.47 Azimuth: 247.81

Moon: Altitude: 55.65 Azimuth: 351.90

Tavrida

Object: Altitude: 63.99 Azimuth: 320.98

Sun: Altitude: -1.63 Azimuth: 241.92

Moon: Altitude: 53.12 Azimuth: 338.08

SAAO

Object: Altitude: 27.37 Azimuth: 211.91

Sun: Altitude: -38.85 Azimuth: 271.89

Moon: Altitude: 41.04 Azimuth: 215.44

IAC

Object: Altitude: 29.28 Azimuth: 258.08

Sun: Altitude: -40.32 Azimuth: 202.32

Moon: Altitude: 27.68 Azimuth: 273.89

Argentina

Object: Altitude: -37.32 Azimuth: 263.98

Sun: Altitude: -55.69 Azimuth: 75.36

Moon: Altitude: -27.50 Azimuth: 275.78

Mexico

Object: Altitude: -33.24 Azimuth: 200.05

Sun: Altitude: -1.89 Azimuth: 112.76

Moon: Altitude: -43.96 Azimuth: 211.56

Ural

Object: Altitude: 55.44 Azimuth: 13.17

Sun: Altitude: 17.34 Azimuth: 262.89

Moon: Altitude: 41.63 Azimuth: 16.44

Vostryakovo

Object: Altitude: 56.05 Azimuth: 337.09

Sun: Altitude: 5.32 Azimuth: 245.12

Moon: Altitude: 43.66 Azimuth: 347.22

Gal. latitude: -34.655737 Gal. longitude: 149.757826

Dist. to Sun: 86.691493

Dist. to Moon: 13.971228

Moon coord.: (31.650507 d, 9.634338 d)

Sun coord.: (130.234263 d, 18.317574 d)

Lunar disk: 0.544967

Lunar phase: 84.840172

Lunar bright limb: 70.429312

No SN in this field

2021-07-31 03:22:15 (JD 2459426.640451)

Siderial time 2.477314 h

Ra 02:23:52.80 Dec 22:58:48.00
( 35.970000d, 22.980000d)

Rise 2021-07-30 21:39:11

Transit 2021-07-31 06:17:30

Set 2021-07-31 14:55:49

Amur

Object: Altitude: 16.84 Azimuth: 105.91

Sun: Altitude: 57.88 Azimuth: 354.19

Moon: Altitude: 4.45 Azimuth: 100.05

Tunka

Object: Altitude: 32.18 Azimuth: 86.92

Sun: Altitude: 50.06 Azimuth: 316.63

Moon: Altitude: 19.74 Azimuth: 80.65

Kislovodsk

Object: Altitude: 68.63 Azimuth: 15.56

Sun: Altitude: 13.81 Azimuth: 257.73

Moon: Altitude: 55.01 Azimuth: 17.27

Tavrida

Object: Altitude: 68.16 Azimuth: 354.02

Sun: Altitude: 8.17 Azimuth: 252.28

Moon: Altitude: 55.08 Azimuth: 2.49

SAAO

Object: Altitude: 32.66 Azimuth: 197.12

Sun: Altitude: -26.19 Azimuth: 264.11

Moon: Altitude: 46.31 Azimuth: 196.91

IAC

Object: Altitude: 42.35 Azimuth: 263.73

Sun: Altitude: -33.65 Azimuth: 218.10

Moon: Altitude: 40.48 Azimuth: 281.80

Argentina

Object: Altitude: -24.72 Azimuth: 257.28

Sun: Altitude: -67.43 Azimuth: 58.06

Moon: Altitude: -15.23 Azimuth: 267.73

Mexico

Object: Altitude: -27.30 Azimuth: 214.55

Sun: Altitude: -13.35 Azimuth: 121.31

Moon: Altitude: -35.85 Azimuth: 227.08

Ural

Object: Altitude: 52.02 Azimuth: 35.97

Sun: Altitude: 25.47 Azimuth: 275.46

Moon: Altitude: 38.40 Azimuth: 34.76

Vostryakovo

Object: Altitude: 57.58 Azimuth: 2.37

Sun: Altitude: 13.36 Azimuth: 257.03

Moon: Altitude: 44.27 Azimuth: 7.21

Gal. latitude: -34.655737 Gal. longitude: 149.757826

Dist. to Sun: 86.730920

Dist. to Moon: 13.650471

Moon coord.: (32.114442 d, 9.837231 d)

Sun coord.: (130.274816 d, 18.307333 d)

Lunar disk: 0.540978

Lunar phase: 85.298996

Lunar bright limb: 70.506327

No SN in this field

2024-07-06 18:08:30 (JD 2460498.255903)

Siderial time 15.663811 h

Ra 02:23:52.80 Dec 22:58:48.00
( 35.970000d, 22.980000d)

Rise 2024-07-06 23:12:28

Transit 2024-07-07 07:50:47

Set 2024-07-07 16:29:06

Amur

Object: Altitude: 29.37 Azimuth: 268.66

Sun: Altitude: -9.42 Azimuth: 215.84

Moon: Altitude: -9.86 Azimuth: 204.95

Tunka

Object: Altitude: 14.58 Azimuth: 251.22

Sun: Altitude: -14.51 Azimuth: 193.65

Moon: Altitude: -12.13 Azimuth: 182.87

Kislovodsk

Object: Altitude: -19.76 Azimuth: 203.34

Sun: Altitude: -11.27 Azimuth: 137.19

Moon: Altitude: -2.66 Azimuth: 130.70

Tavrida

Object: Altitude: -20.85 Azimuth: 195.15

Sun: Altitude: -6.20 Azimuth: 130.71

Moon: Altitude: 2.76 Azimuth: 124.77

SAAO

Object: Altitude: -80.40 Azimuth: 347.87

Sun: Altitude: -29.93 Azimuth: 99.24

Moon: Altitude: -22.21 Azimuth: 107.58

IAC

Object: Altitude: -28.54 Azimuth: 142.90

Sun: Altitude: 23.34 Azimuth: 104.09

Moon: Altitude: 34.08 Azimuth: 103.72

Argentina

Object: Altitude: -13.51 Azimuth: 108.87

Sun: Altitude: 31.67 Azimuth: 156.10

Moon: Altitude: 31.28 Azimuth: 168.71

Mexico

Object: Altitude: 44.26 Azimuth: 92.84

Sun: Altitude: 71.01 Azimuth: 291.69

Moon: Altitude: 62.97 Azimuth: 273.08

Ural

Object: Altitude: -2.92 Azimuth: 217.13

Sun: Altitude: -6.64 Azimuth: 153.04

Moon: Altitude: -0.25 Azimuth: 144.38

Vostryakovo

Object: Altitude: -9.95 Azimuth: 197.88

Sun: Altitude: -0.80 Azimuth: 134.22

Moon: Altitude: 7.02 Azimuth: 126.82

Gal. latitude: -34.655737 Gal. longitude: 149.757826

Dist. to Sun: 63.941511

Dist. to Moon: 72.769493

Moon coord.: (117.280949 d, 26.012898 d)

Sun coord.: (106.080412 d, 22.623160 d)

Lunar disk: 0.008823

Lunar phase: 169.220365

Lunar bright limb: 254.516401

No SN in this field
Recent coverage and limits telegrams

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

  ID = 4727
TYPE = 35
DAYS = 2


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB210731.09 (trigger No 649390368,02h 13m 26.40s , +24d 01m 12.0s, R=1.79) errorbox 80 sec after trigger time at 2021-07-31 02:14:03 UT, with upper limit up to  17.6 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -41.1 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB210731.09 errorbox  5607 sec after notice time and 5699 sec after trigger time at 2021-07-31 03:47:43 UT, with upper limit up to  16.4 mag. The observations began at zenith distance = 55 deg. The sun  altitude  is -21.5 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB210731.09 errorbox  1 days 30155 sec after notice time and 1 days 30247 sec after trigger time at 2021-08-01 10:36:51 UT, with upper limit up to  16.6 mag. Observations started at twilight.  The observations began at zenith distance = 55 deg. The sun  altitude  is -10.0 deg. 

The galactic latitude b = -35 deg., longitude l = 147 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1676354

We obtain a following upper limits.  

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

      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 23m 04.58s , +22d 11m 49.0s) |  P| |    20 | 15.4 |        
      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 24m 04.02s , +22d 05m 15.3s) |  P- |    20 | 15.1 |        
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.8s) |  P| |    30 | 15.8 |        
     197 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.7s) |  P| |   130 | 16.6 |  Coadd 
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 10m 51.59s , +24d 22m 42.0s) |  P- |    30 | 15.5 |        
     197 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 10m 51.59s , +24d 22m 42.0s) |  P- |   130 | 16.4 |  Coadd 
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 24m 11.47s , +22d 12m 23.2s) |  P| |    30 | 15.7 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 23m 16.12s , +22d 17m 49.9s) |  P- |    30 | 15.4 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 11m 54.76s , +24d 17m 10.6s) |  P| |    40 | 15.9 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 10m 58.30s , +24d 22m 36.8s) |  P- |    40 | 15.6 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 11m 48.50s , +24d 16m 08.8s) |  P| |    60 | 16.1 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 10m 52.04s , +24d 21m 35.2s) |  P- |    60 | 16.0 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 11m 55.23s , +24d 16m 08.1s) |  P| |    70 | 16.2 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 10m 58.72s , +24d 21m 34.4s) |  P- |    70 | 16.0 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 57.30s , +22d 55m 07.1s) |  P| |   120 | 16.1 |        
     797 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 57.30s , +22d 55m 07.1s) |  P| |   430 | 17.0 |  Coadd 
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 00.63s , +23d 00m 28.5s) |  P- |   120 | 15.9 |        
     797 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 00.63s , +23d 00m 28.5s) |  P- |   430 | 16.8 |  Coadd 
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 22m 51.71s , +22d 54m 30.7s) |  P| |   140 | 16.3 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 21m 55.02s , +22d 59m 52.2s) |  P- |   140 | 16.1 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 22m 52.19s , +22d 55m 28.7s) |  P| |   170 | 16.4 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 21m 55.47s , +23d 00m 50.4s) |  P- |   170 | 16.3 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 22m 56.47s , +22d 54m 27.6s) |  P| |   180 | 16.5 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 21m 59.72s , +22d 59m 49.4s) |  P- |   180 | 16.3 |        
    5790 | 2021-07-31 03:47:43 |         MASTER-SAAO | (02h 20m 18.02s , +22d 06m 12.9s) |   C |   180 | 16.4 |        
    5989 | 2021-07-31 03:51:02 |         MASTER-SAAO | (02h 20m 19.91s , +22d 05m 14.4s) |   C |   180 | 16.3 |        
    6188 | 2021-07-31 03:54:21 |         MASTER-SAAO | (02h 20m 24.39s , +22d 06m 42.9s) |   C |   180 | 14.4 |        
   96821 | 2021-08-01 05:04:54 |          MASTER-IAC | (02h 13m 05.87s , +24d 29m 10.4s) |   C |   180 | 17.6 |        
   96821 | 2021-08-01 05:04:54 |          MASTER-IAC | (02h 12m 09.77s , +24d 35m 34.1s) |   C |   180 | 17.5 |        
  116738 | 2021-08-01 10:36:51 |         MASTER-OAFA | (02h 12m 13.14s , +23d 50m 18.1s) |   C |   180 | 16.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4716
TYPE = 35
DAYS = 1


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB210731.09 (trigger No 649390368,02h 13m 26.40s , +24d 01m 12.0s, R=1.79) errorbox 80 sec after trigger time at 2021-07-31 02:14:03 UT, with upper limit up to  17.0 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -41.1 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB210731.09 errorbox  5607 sec after notice time and 5699 sec after trigger time at 2021-07-31 03:47:43 UT, with upper limit up to  16.4 mag. The observations began at zenith distance = 55 deg. The sun  altitude  is -21.5 deg. 

The galactic latitude b = -35 deg., longitude l = 147 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1676335

We obtain a following upper limits.  

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

      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 23m 04.58s , +22d 11m 49.0s) |  P| |    20 | 15.4 |        
      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 24m 04.02s , +22d 05m 15.3s) |  P- |    20 | 15.1 |        
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.8s) |  P| |    30 | 15.8 |        
     197 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.7s) |  P| |   130 | 16.6 |  Coadd 
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 10m 51.59s , +24d 22m 42.0s) |  P- |    30 | 15.5 |        
     197 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 10m 51.59s , +24d 22m 42.0s) |  P- |   130 | 16.4 |  Coadd 
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 24m 11.47s , +22d 12m 23.2s) |  P| |    30 | 15.7 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 23m 16.12s , +22d 17m 49.9s) |  P- |    30 | 15.4 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 11m 54.76s , +24d 17m 10.6s) |  P| |    40 | 15.9 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 10m 58.30s , +24d 22m 36.8s) |  P- |    40 | 15.6 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 11m 48.50s , +24d 16m 08.8s) |  P| |    60 | 16.1 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 10m 52.04s , +24d 21m 35.2s) |  P- |    60 | 16.0 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 11m 55.23s , +24d 16m 08.1s) |  P| |    70 | 16.2 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 10m 58.72s , +24d 21m 34.4s) |  P- |    70 | 16.0 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 57.30s , +22d 55m 07.1s) |  P| |   120 | 16.1 |        
     797 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 57.30s , +22d 55m 07.1s) |  P| |   430 | 17.0 |  Coadd 
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 00.63s , +23d 00m 28.5s) |  P- |   120 | 15.9 |        
     797 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 00.63s , +23d 00m 28.5s) |  P- |   430 | 16.8 |  Coadd 
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 22m 51.71s , +22d 54m 30.7s) |  P| |   140 | 16.3 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 21m 55.02s , +22d 59m 52.2s) |  P- |   140 | 16.1 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 22m 52.19s , +22d 55m 28.7s) |  P| |   170 | 16.4 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 21m 55.47s , +23d 00m 50.4s) |  P- |   170 | 16.3 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 22m 56.47s , +22d 54m 27.6s) |  P| |   180 | 16.5 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 21m 59.72s , +22d 59m 49.4s) |  P- |   180 | 16.3 |        
    5790 | 2021-07-31 03:47:43 |         MASTER-SAAO | (02h 20m 18.02s , +22d 06m 12.9s) |   C |   180 | 16.4 |        
    5989 | 2021-07-31 03:51:02 |         MASTER-SAAO | (02h 20m 19.91s , +22d 05m 14.4s) |   C |   180 | 16.3 |        
    6188 | 2021-07-31 03:54:21 |         MASTER-SAAO | (02h 20m 24.39s , +22d 06m 42.9s) |   C |   180 | 14.4 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4706
TYPE = 35
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB210731.09 (trigger No 649390368,02h 23m 52.80s , +22d 58m 48.0s, R=3.07) errorbox 80 sec after trigger time at 2021-07-31 02:14:03 UT, with upper limit up to  16.6 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -41.1 deg. 

The galactic latitude b = -35 deg., longitude l = 150 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1676367

We obtain a following upper limits.  

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

      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 23m 04.58s , +22d 11m 49.0s) |  P| |    20 | 15.4 |        
      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 24m 04.02s , +22d 05m 15.3s) |  P- |    20 | 15.1 |        
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.8s) |  P| |    30 | 15.8 |        
     197 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.7s) |  P| |   130 | 16.6 |  Coadd 
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 10m 51.59s , +24d 22m 42.0s) |  P- |    30 | 15.5 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 24m 11.47s , +22d 12m 23.2s) |  P| |    30 | 15.7 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 23m 16.12s , +22d 17m 49.9s) |  P- |    30 | 15.4 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 11m 54.76s , +24d 17m 10.6s) |  P| |    40 | 15.9 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 10m 58.30s , +24d 22m 36.8s) |  P- |    40 | 15.6 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 11m 48.50s , +24d 16m 08.8s) |  P| |    60 | 16.1 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 10m 52.04s , +24d 21m 35.2s) |  P- |    60 | 16.0 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 11m 55.23s , +24d 16m 08.1s) |  P| |    70 | 16.2 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 10m 58.72s , +24d 21m 34.4s) |  P- |    70 | 16.0 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 57.30s , +22d 55m 07.1s) |  P| |   120 | 16.1 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 00.63s , +23d 00m 28.5s) |  P- |   120 | 15.9 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 22m 51.71s , +22d 54m 30.7s) |  P| |   140 | 16.3 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 21m 55.02s , +22d 59m 52.2s) |  P- |   140 | 16.1 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 22m 52.19s , +22d 55m 28.7s) |  P| |   170 | 16.4 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 21m 55.47s , +23d 00m 50.4s) |  P- |   170 | 16.3 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 22m 56.47s , +22d 54m 27.6s) |  P| |   180 | 16.5 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 21m 59.72s , +22d 59m 49.4s) |  P- |   180 | 16.3 |        


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



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

  ID = 4705
TYPE = 35
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB210731.09 (trigger No 649390368,02h 23m 52.80s , +22d 58m 48.0s, R=3.07) errorbox 80 sec after trigger time at 2021-07-31 02:14:03 UT, with upper limit up to  16.6 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -41.1 deg. 

The galactic latitude b = -35 deg., longitude l = 150 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1676367

We obtain a following upper limits.  

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

      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 23m 04.58s , +22d 11m 49.0s) |  P| |    20 | 15.4 |        
      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 24m 04.02s , +22d 05m 15.3s) |  P- |    20 | 15.1 |        
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.8s) |  P| |    30 | 15.8 |        
     197 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.7s) |  P| |   130 | 16.6 |  Coadd 
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 10m 51.59s , +24d 22m 42.0s) |  P- |    30 | 15.5 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 24m 11.47s , +22d 12m 23.2s) |  P| |    30 | 15.7 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 23m 16.12s , +22d 17m 49.9s) |  P- |    30 | 15.4 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 11m 54.76s , +24d 17m 10.6s) |  P| |    40 | 15.9 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 10m 58.30s , +24d 22m 36.8s) |  P- |    40 | 15.6 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 11m 48.50s , +24d 16m 08.8s) |  P| |    60 | 16.1 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 10m 52.04s , +24d 21m 35.2s) |  P- |    60 | 16.0 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 11m 55.23s , +24d 16m 08.1s) |  P| |    70 | 16.2 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 10m 58.72s , +24d 21m 34.4s) |  P- |    70 | 16.0 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 57.30s , +22d 55m 07.1s) |  P| |   120 | 16.1 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 00.63s , +23d 00m 28.5s) |  P- |   120 | 15.9 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 22m 51.71s , +22d 54m 30.7s) |  P| |   140 | 16.3 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 21m 55.02s , +22d 59m 52.2s) |  P- |   140 | 16.1 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 22m 52.19s , +22d 55m 28.7s) |  P| |   170 | 16.4 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 21m 55.47s , +23d 00m 50.4s) |  P- |   170 | 16.3 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 22m 56.47s , +22d 54m 27.6s) |  P| |   180 | 16.5 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 21m 59.72s , +22d 59m 49.4s) |  P- |   180 | 16.3 |        


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



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

  ID = 4704
TYPE = 34
DAYS = 0


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the FERMI GRB210731.09 (trigger No 649390368,02h 23m 52.80s , +22d 58m 48.0s, R=3.07) errorbox 80 sec after trigger time at 2021-07-31 02:14:03 UT, with upper limit up to  16.6 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -41.1 deg. 

The galactic latitude b = -35 deg., longitude l = 150 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1676367

We obtain a following upper limits.  

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

      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 23m 04.58s , +22d 11m 49.0s) |  P| |    20 | 15.4 |        
      90 | 2021-07-31 02:14:03 |          MASTER-IAC | (02h 24m 04.02s , +22d 05m 15.3s) |  P- |    20 | 15.1 |        
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.8s) |  P| |    30 | 15.8 |        
     197 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 11m 48.12s , +24d 17m 13.7s) |  P| |   130 | 16.6 |  Coadd 
     147 | 2021-07-31 02:14:55 |          MASTER-IAC | (02h 10m 51.59s , +24d 22m 42.0s) |  P- |    30 | 15.5 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 24m 11.47s , +22d 12m 23.2s) |  P| |    30 | 15.7 |        
     196 | 2021-07-31 02:15:44 |          MASTER-IAC | (02h 23m 16.12s , +22d 17m 49.9s) |  P- |    30 | 15.4 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 11m 54.76s , +24d 17m 10.6s) |  P| |    40 | 15.9 |        
     252 | 2021-07-31 02:16:34 |          MASTER-IAC | (02h 10m 58.30s , +24d 22m 36.8s) |  P- |    40 | 15.6 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 11m 48.50s , +24d 16m 08.8s) |  P| |    60 | 16.1 |        
     321 | 2021-07-31 02:17:34 |          MASTER-IAC | (02h 10m 52.04s , +24d 21m 35.2s) |  P- |    60 | 16.0 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 11m 55.23s , +24d 16m 08.1s) |  P| |    70 | 16.2 |        
     406 | 2021-07-31 02:18:54 |          MASTER-IAC | (02h 10m 58.72s , +24d 21m 34.4s) |  P- |    70 | 16.0 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 57.30s , +22d 55m 07.1s) |  P| |   120 | 16.1 |        
     642 | 2021-07-31 02:22:25 |          MASTER-IAC | (02h 22m 00.63s , +23d 00m 28.5s) |  P- |   120 | 15.9 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 22m 51.71s , +22d 54m 30.7s) |  P| |   140 | 16.3 |        
     792 | 2021-07-31 02:24:45 |          MASTER-IAC | (02h 21m 55.02s , +22d 59m 52.2s) |  P- |   140 | 16.1 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 22m 52.19s , +22d 55m 28.7s) |  P| |   170 | 16.4 |        
     966 | 2021-07-31 02:27:24 |          MASTER-IAC | (02h 21m 55.47s , +23d 00m 50.4s) |  P- |   170 | 16.3 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 22m 56.47s , +22d 54m 27.6s) |  P| |   180 | 16.5 |        
    1161 | 2021-07-31 02:30:34 |          MASTER-IAC | (02h 21m 59.72s , +22d 59m 49.4s) |  P- |   180 | 16.3 |        


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

MASTER, 2002-2024