MASTER Net MASTER Database: GRB250617.88 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 GRB250617.88
Trignum 771886893
Trigger time 2025-06-17 21:01:28.19
Notice time 2025-06-17 21:11:04.523635
Coord, eb (21h 51m 52.80s , +32d 45m 00.0s) , 6.71
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
2906391 2025-06-17 21:11:16.83999 21h 51m 52.80s +32d 45m 00.0s FERMI 6.71 alert 771886893 2 115 alert
2906382 2025-06-17 21:08:06.78311 21h 58m 09.60s +32d 37m 48.0s FERMI 7.28 alert 771886893 5 112 alert
2906375 2025-06-17 21:06:34.915494 21h 41m 28.08s +32d 21m 00.0s FERMI 20.42 alert 771886893 10 111 alert

DAYS:

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

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

2025-06-17 21:01:28 (JD 2460844.376019)

Siderial time 17.290081 h

Ra 21:51:52.80 Dec 32:45:00.00
(327.970000d, 32.750000d)

Rise 2025-06-18 14:33:21

Transit 2025-06-18 01:35:11

Set 2025-06-18 12:33:06

Amur

Object: Altitude: 66.47 Azimuth: 49.77

Sun: Altitude: 13.53 Azimuth: 249.52

Moon: Altitude: 33.01 Azimuth: 3.63

Tunka

Object: Altitude: 70.80 Azimuth: 351.87

Sun: Altitude: 0.92 Azimuth: 231.54

Moon: Altitude: 28.78 Azimuth: 335.63

Kislovodsk

Object: Altitude: 40.03 Azimuth: 259.98

Sun: Altitude: -22.83 Azimuth: 178.01

Moon: Altitude: 1.24 Azimuth: 280.38

Tavrida

Object: Altitude: 34.28 Azimuth: 255.74

Sun: Altitude: -21.19 Azimuth: 169.67

Moon: Altitude: -4.93 Azimuth: 274.43

SAAO

Object: Altitude: -13.48 Azimuth: 239.55

Sun: Altitude: -67.27 Azimuth: 72.75

Moon: Altitude: -7.80 Azimuth: 282.97

IAC

Object: Altitude: -8.29 Azimuth: 225.63

Sun: Altitude: -11.72 Azimuth: 124.92

Moon: Altitude: -47.19 Azimuth: 247.12

Argentina

Object: Altitude: -86.13 Azimuth: 254.64

Sun: Altitude: 6.08 Azimuth: 122.42

Moon: Altitude: -49.41 Azimuth: 21.26

Mexico

Object: Altitude: -17.41 Azimuth: 148.28

Sun: Altitude: 66.47 Azimuth: 77.20

Moon: Altitude: -33.36 Azimuth: 103.62

Ural

Object: Altitude: 50.15 Azimuth: 287.22

Sun: Altitude: -8.57 Azimuth: 193.92

Moon: Altitude: 7.63 Azimuth: 294.85

Vostryakovo

Object: Altitude: 38.38 Azimuth: 266.13

Sun: Altitude: -11.01 Azimuth: 173.73

Moon: Altitude: -3.52 Azimuth: 276.55

Gal. latitude: -16.596175 Gal. longitude: 85.214375

Dist. to Sun: 98.675069

Dist. to Moon: 42.993158

Moon coord.: (346.148501 d, -6.613956 d)

Sun coord.: (86.250688 d, 23.402329 d)

Lunar disk: 0.604099

Lunar phase: 77.983280

Lunar bright limb: 67.397136

No SN in this field

2025-06-17 21:11:04 (JD 2460844.382685)

Siderial time 17.450519 h

Ra 21:51:52.80 Dec 32:45:00.00
(327.970000d, 32.750000d)

Rise 2025-06-18 14:33:21

Transit 2025-06-18 01:35:11

Set 2025-06-18 12:33:06

Amur

Object: Altitude: 65.26 Azimuth: 53.74

Sun: Altitude: 14.97 Azimuth: 251.24

Moon: Altitude: 32.92 Azimuth: 6.39

Tunka

Object: Altitude: 70.93 Azimuth: 358.03

Sun: Altitude: 2.10 Azimuth: 233.40

Moon: Altitude: 29.39 Azimuth: 338.18

Kislovodsk

Object: Altitude: 41.74 Azimuth: 261.40

Sun: Altitude: -22.85 Azimuth: 180.40

Moon: Altitude: 2.91 Azimuth: 281.97

Tavrida

Object: Altitude: 35.94 Azimuth: 257.15

Sun: Altitude: -21.47 Azimuth: 172.01

Moon: Altitude: -3.26 Azimuth: 276.03

SAAO

Object: Altitude: -11.74 Azimuth: 238.50

Sun: Altitude: -69.19 Azimuth: 69.84

Moon: Altitude: -5.90 Azimuth: 281.64

IAC

Object: Altitude: -6.75 Azimuth: 226.96

Sun: Altitude: -13.44 Azimuth: 126.33

Moon: Altitude: -45.27 Azimuth: 248.98

Argentina

Object: Altitude: -84.14 Azimuth: 258.88

Sun: Altitude: 4.35 Azimuth: 121.06

Moon: Altitude: -50.11 Azimuth: 17.86

Mexico

Object: Altitude: -18.47 Azimuth: 150.09

Sun: Altitude: 64.46 Azimuth: 79.36

Moon: Altitude: -35.27 Azimuth: 105.20

Ural

Object: Altitude: 51.39 Azimuth: 289.74

Sun: Altitude: -8.23 Azimuth: 196.12

Moon: Altitude: 8.81 Azimuth: 296.86

Vostryakovo

Object: Altitude: 39.75 Azimuth: 268.06

Sun: Altitude: -11.13 Azimuth: 175.97

Moon: Altitude: -2.17 Azimuth: 278.43

Gal. latitude: -16.596175 Gal. longitude: 85.214375

Dist. to Sun: 98.679725

Dist. to Moon: 42.985169

Moon coord.: (346.229525 d, -6.571656 d)

Sun coord.: (86.257619 d, 23.402494 d)

Lunar disk: 0.603381

Lunar phase: 78.067393

Lunar bright limb: 67.386310

No SN in this field

2025-06-17 22:11:04 (JD 2460844.424352)

Siderial time 18.453257 h

Ra 21:51:52.80 Dec 32:45:00.00
(327.970000d, 32.750000d)

Rise 2025-06-18 14:33:21

Transit 2025-06-18 01:35:11

Set 2025-06-18 12:33:06

Amur

Object: Altitude: 56.67 Azimuth: 73.10

Sun: Altitude: 24.27 Azimuth: 262.02

Moon: Altitude: 30.80 Azimuth: 23.23

Tunka

Object: Altitude: 68.30 Azimuth: 34.12

Sun: Altitude: 10.04 Azimuth: 244.70

Moon: Altitude: 31.76 Azimuth: 354.75

Kislovodsk

Object: Altitude: 52.57 Azimuth: 271.06

Sun: Altitude: -21.38 Azimuth: 195.17

Moon: Altitude: 13.13 Azimuth: 292.30

Tavrida

Object: Altitude: 46.50 Azimuth: 266.43

Sun: Altitude: -21.58 Azimuth: 186.81

Moon: Altitude: 7.05 Azimuth: 286.16

SAAO

Object: Altitude: -1.34 Azimuth: 231.25

Sun: Altitude: -79.44 Azimuth: 33.38

Moon: Altitude: 6.11 Azimuth: 273.61

IAC

Object: Altitude: 3.50 Azimuth: 234.37

Sun: Altitude: -23.36 Azimuth: 136.39

Moon: Altitude: -32.84 Azimuth: 258.52

Argentina

Object: Altitude: -71.51 Azimuth: 261.21

Sun: Altitude: -6.99 Azimuth: 113.25

Moon: Altitude: -51.77 Azimuth: 354.99

Mexico

Object: Altitude: -23.67 Azimuth: 162.45

Sun: Altitude: 51.68 Azimuth: 89.19

Moon: Altitude: -46.74 Azimuth: 116.91

Ural

Object: Altitude: 58.56 Azimuth: 308.03

Sun: Altitude: -5.06 Azimuth: 209.60

Moon: Altitude: 15.64 Azimuth: 309.90

Vostryakovo

Object: Altitude: 48.25 Azimuth: 281.12

Sun: Altitude: -10.69 Azimuth: 189.98

Moon: Altitude: 6.03 Azimuth: 290.33

Gal. latitude: -16.596175 Gal. longitude: 85.214375

Dist. to Sun: 98.708822

Dist. to Moon: 42.938700

Moon coord.: (346.735860 d, -6.306859 d)

Sun coord.: (86.300934 d, 23.403519 d)

Lunar disk: 0.598885

Lunar phase: 78.593384

Lunar bright limb: 67.320252

No SN in this field

2025-06-20 12:02:21 (JD 2460847.001632)

Siderial time 8.477332 h

Ra 21:51:52.80 Dec 32:45:00.00
(327.970000d, 32.750000d)

Rise 2025-06-21 14:21:33

Transit 2025-06-21 01:23:24

Set 2025-06-21 12:21:18

Amur

Object: Altitude: 12.97 Azimuth: 233.71

Sun: Altitude: -3.14 Azimuth: 133.65

Moon: Altitude: -27.01 Azimuth: 200.22

Tunka

Object: Altitude: 3.16 Azimuth: 216.29

Sun: Altitude: 10.31 Azimuth: 115.01

Moon: Altitude: -27.35 Azimuth: 173.19

Kislovodsk

Object: Altitude: -12.14 Azimuth: 166.36

Sun: Altitude: 49.39 Azimuth: 74.32

Moon: Altitude: -8.83 Azimuth: 114.00

Tavrida

Object: Altitude: -9.40 Azimuth: 159.37

Sun: Altitude: 54.75 Azimuth: 64.44

Moon: Altitude: -2.79 Azimuth: 107.93

SAAO

Object: Altitude: -58.46 Azimuth: 101.03

Sun: Altitude: 30.56 Azimuth: 157.15

Moon: Altitude: -6.99 Azimuth: 98.17

IAC

Object: Altitude: 3.67 Azimuth: 125.53

Sun: Altitude: 74.87 Azimuth: 285.08

Moon: Altitude: 36.35 Azimuth: 82.16

Argentina

Object: Altitude: 8.78 Azimuth: 137.71

Sun: Altitude: 4.17 Azimuth: 239.03

Moon: Altitude: 47.56 Azimuth: 177.89

Mexico

Object: Altitude: 80.36 Azimuth: 103.07

Sun: Altitude: -3.52 Azimuth: 239.85

Moon: Altitude: 48.05 Azimuth: 290.38

Ural

Object: Altitude: -0.21 Azimuth: 180.94

Sun: Altitude: 35.64 Azimuth: 78.13

Moon: Altitude: -11.04 Azimuth: 130.22

Vostryakovo

Object: Altitude: -0.11 Azimuth: 162.77

Sun: Altitude: 47.40 Azimuth: 57.28

Moon: Altitude: -1.51 Azimuth: 111.26

Gal. latitude: -16.596175 Gal. longitude: 85.214375

Dist. to Sun: 100.504523

Dist. to Moon: 51.523379

Moon coord.: (18.764204 d, 10.616782 d)

Sun coord.: (88.981100 d, 23.443641 d)

Lunar disk: 0.311921

Lunar phase: 112.095863

Lunar bright limb: 68.837680

No SN in this field
Recent coverage and limits telegrams

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

  ID = 12745
TYPE = 35
DAYS = 2


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the FERMI GRB250617.88 (trigger No 771886893,21h 51m 52.80s , +32d 45m 00.0s, R=6.71) errorbox  7398 sec after notice time and 7550 sec after trigger time at 2025-06-17 23:07:18 UT, with upper limit up to  19.0 mag. The observations began at zenith distance = 31 deg. The sun  altitude  is -18.5 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB250617.88 errorbox  30646 sec after notice time and 30797 sec after trigger time at 2025-06-18 05:34:46 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -74.8 deg. 

MASTER-Tunka robotic telescope  located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the FERMI GRB250617.88 errorbox  73582 sec after notice time and 73733 sec after trigger time at 2025-06-18 17:30:21 UT, with upper limit up to  13.1 mag. Observations started at twilight.  The observations began at zenith distance = 47 deg. The sun  altitude  is -15.4 deg. 

The galactic latitude b = -17 deg., longitude l = 85 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2906391

We obtain a following upper limits.  

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

    7640 | 2025-06-17 23:07:18 |   MASTER-Kislovodsk | (22h 10m 02.20s , +33d 01m 37.7s) |   C |   180 | 18.3 |        
    7820 | 2025-06-17 23:07:18 |   MASTER-Kislovodsk | (22h 10m 02.20s , +33d 01m 37.6s) |   C |   540 | 19.0 |  Coadd 
    7844 | 2025-06-17 23:10:41 |   MASTER-Kislovodsk | (22h 10m 07.83s , +33d 00m 40.5s) |   C |   180 | 18.2 |        
    8045 | 2025-06-17 23:14:03 |   MASTER-Kislovodsk | (22h 10m 03.42s , +32d 59m 45.7s) |   C |   180 | 18.2 |        
    8461 | 2025-06-17 23:20:59 |   MASTER-Kislovodsk | (22h 10m 04.39s , +33d 01m 35.1s) |   C |   180 | 18.3 |        
    8641 | 2025-06-17 23:20:59 |   MASTER-Kislovodsk | (22h 10m 04.40s , +33d 01m 35.1s) |   C |   540 | 19.0 |  Coadd 
    8661 | 2025-06-17 23:24:19 |   MASTER-Kislovodsk | (22h 10m 03.95s , +33d 00m 26.4s) |   C |   180 | 18.3 |        
    8863 | 2025-06-17 23:27:41 |   MASTER-Kislovodsk | (22h 10m 06.76s , +33d 01m 50.0s) |   C |   180 | 18.2 |        
    9065 | 2025-06-17 23:31:02 |   MASTER-Kislovodsk | (22h 10m 01.28s , +33d 01m 14.9s) |   C |   180 | 18.2 |        
    9245 | 2025-06-17 23:31:02 |   MASTER-Kislovodsk | (22h 10m 01.28s , +33d 01m 15.0s) |   C |   540 | 18.9 |  Coadd 
    9266 | 2025-06-17 23:34:24 |   MASTER-Kislovodsk | (22h 09m 58.76s , +33d 02m 21.3s) |   C |   180 | 18.2 |        
    9468 | 2025-06-17 23:37:46 |   MASTER-Kislovodsk | (22h 10m 05.44s , +33d 01m 26.7s) |   C |   180 | 18.1 |        
    9873 | 2025-06-17 23:44:31 |   MASTER-Kislovodsk | (22h 10m 03.51s , +33d 00m 54.3s) |   C |   180 | 18.2 |        
   10053 | 2025-06-17 23:44:31 |   MASTER-Kislovodsk | (22h 10m 03.52s , +33d 00m 54.3s) |   C |   540 | 18.9 |  Coadd 
   10075 | 2025-06-17 23:47:52 |   MASTER-Kislovodsk | (22h 10m 00.97s , +33d 02m 35.5s) |   C |   180 | 18.1 |        
   10276 | 2025-06-17 23:51:14 |   MASTER-Kislovodsk | (22h 10m 00.51s , +33d 01m 12.6s) |   C |   180 | 18.1 |        
   10477 | 2025-06-17 23:54:35 |   MASTER-Kislovodsk | (22h 10m 03.28s , +33d 02m 42.7s) |   C |   180 | 18.0 |        
   11162 | 2025-06-18 00:06:00 |   MASTER-Kislovodsk | (22h 09m 56.17s , +33d 03m 16.6s) |   C |   180 | 17.8 |        
   11363 | 2025-06-18 00:09:21 |   MASTER-Kislovodsk | (22h 10m 02.51s , +33d 02m 20.8s) |   C |   180 | 17.5 |        
   11571 | 2025-06-18 00:12:48 |   MASTER-Kislovodsk | (22h 09m 54.06s , +33d 01m 26.3s) |   C |   180 | 15.6 |        
   11772 | 2025-06-18 00:16:10 |   MASTER-Kislovodsk | (22h 10m 00.80s , +33d 01m 34.1s) |   C |   180 | 14.6 |        
   30888 | 2025-06-18 05:34:46 |         MASTER-OAFA | (22h 13m 06.89s , +32d 25m 32.4s) |   C |   180 | 17.3 |        
   31437 | 2025-06-18 05:44:55 |         MASTER-OAFA | (22h 11m 56.61s , +32d 28m 43.0s) |   C |    60 | 17.4 |        
   31517 | 2025-06-18 05:46:15 |         MASTER-OAFA | (22h 11m 55.21s , +32d 30m 09.7s) |   C |    60 | 17.7 |        
   32153 | 2025-06-18 05:55:51 |         MASTER-OAFA | (22h 13m 12.62s , +32d 28m 14.3s) |   C |   180 | 18.2 |        
   32789 | 2025-06-18 06:07:27 |         MASTER-OAFA | (22h 11m 57.63s , +32d 30m 11.6s) |   C |    60 | 18.1 |        
   32867 | 2025-06-18 06:08:45 |         MASTER-OAFA | (22h 11m 56.00s , +32d 29m 13.9s) |   C |    60 | 18.1 |        
   33439 | 2025-06-18 06:17:17 |         MASTER-OAFA | (22h 13m 03.73s , +32d 26m 36.5s) |   C |   180 | 18.6 |        
   34302 | 2025-06-18 06:32:40 |         MASTER-OAFA | (22h 11m 52.28s , +32d 30m 23.0s) |   C |    60 | 18.7 |        
   34703 | 2025-06-18 06:38:20 |         MASTER-OAFA | (22h 13m 00.33s , +32d 27m 26.4s) |   C |   180 | 19.0 |        
   35258 | 2025-06-18 06:48:36 |         MASTER-OAFA | (22h 11m 52.01s , +32d 29m 51.0s) |   C |    60 | 18.8 |        
   35888 | 2025-06-18 06:48:36 |         MASTER-OAFA | (22h 11m 51.98s , +32d 29m 51.2s) |   C |  1320 | 19.5 |  Coadd 
   35510 | 2025-06-18 06:52:47 |         MASTER-OAFA | (22h 11m 44.48s , +32d 30m 18.4s) |   C |    60 | 18.8 |        
   35762 | 2025-06-18 06:56:59 |         MASTER-OAFA | (22h 11m 43.81s , +32d 27m 47.3s) |   C |    60 | 18.9 |        
   35899 | 2025-06-18 06:58:17 |         MASTER-OAFA | (22h 13m 00.77s , +32d 26m 09.6s) |   C |   180 | 18.7 |        
   36430 | 2025-06-18 07:08:07 |         MASTER-OAFA | (22h 11m 54.82s , +32d 41m 35.5s) |   C |    60 | 18.8 |        
   36505 | 2025-06-18 07:09:23 |         MASTER-OAFA | (22h 12m 00.96s , +32d 41m 26.0s) |   C |    60 | 18.8 |        
   36697 | 2025-06-18 07:12:35 |         MASTER-OAFA | (22h 11m 57.30s , +32d 41m 52.9s) |   C |    60 | 18.8 |        
   37130 | 2025-06-18 07:18:48 |         MASTER-OAFA | (22h 10m 44.78s , +32d 42m 59.2s) |   C |   180 | 19.1 |        
   38345 | 2025-06-18 07:39:03 |         MASTER-OAFA | (22h 10m 44.18s , +32d 43m 43.8s) |   C |   180 | 19.1 |        
   39566 | 2025-06-18 07:59:23 |         MASTER-OAFA | (22h 10m 41.96s , +32d 46m 31.3s) |   C |   180 | 19.0 |        
   40789 | 2025-06-18 08:19:46 |         MASTER-OAFA | (22h 10m 45.10s , +32d 45m 33.4s) |   C |   180 | 19.0 |        
   42073 | 2025-06-18 08:41:11 |         MASTER-OAFA | (22h 12m 00.23s , +32d 20m 23.5s) |   C |   180 | 17.8 |        
   42406 | 2025-06-18 08:47:44 |         MASTER-OAFA | (22h 10m 40.13s , +32d 21m 49.4s) |   C |    60 | 18.6 |        
   42485 | 2025-06-18 08:49:02 |         MASTER-OAFA | (22h 10m 39.14s , +32d 22m 52.7s) |   C |    60 | 18.5 |        
   42560 | 2025-06-18 08:50:18 |         MASTER-OAFA | (22h 10m 45.82s , +32d 21m 55.2s) |   C |    60 | 18.5 |        
   42638 | 2025-06-18 08:51:36 |         MASTER-OAFA | (22h 10m 37.15s , +32d 20m 57.8s) |   C |    60 | 18.5 |        
   42715 | 2025-06-18 08:52:53 |         MASTER-OAFA | (22h 10m 43.09s , +32d 21m 22.0s) |   C |    60 | 18.6 |        
   42794 | 2025-06-18 08:54:12 |         MASTER-OAFA | (22h 10m 39.05s , +32d 22m 58.9s) |   C |    60 | 18.9 |        
   42869 | 2025-06-18 08:55:27 |         MASTER-OAFA | (22h 10m 38.86s , +32d 21m 32.0s) |   C |    60 | 19.0 |        
   42943 | 2025-06-18 08:56:41 |         MASTER-OAFA | (22h 10m 41.95s , +32d 22m 41.1s) |   C |    60 | 19.0 |        
   43031 | 2025-06-18 08:58:08 |         MASTER-OAFA | (22h 10m 35.97s , +32d 22m 09.0s) |   C |    60 | 19.0 |        
   43114 | 2025-06-18 08:59:32 |         MASTER-OAFA | (22h 10m 36.15s , +32d 23m 10.9s) |   C |    60 | 19.0 |        
   43194 | 2025-06-18 09:00:51 |         MASTER-OAFA | (22h 10m 42.07s , +32d 22m 13.4s) |   C |    60 | 19.0 |        
   43336 | 2025-06-18 09:02:13 |         MASTER-OAFA | (22h 11m 46.34s , +32d 19m 02.9s) |   C |   180 | 19.4 |        
   43477 | 2025-06-18 09:05:34 |         MASTER-OAFA | (22h 10m 40.27s , +32d 21m 45.7s) |   C |    60 | 19.0 |        
   43906 | 2025-06-18 09:11:44 |         MASTER-OAFA | (22h 10m 40.02s , +32d 47m 50.8s) |   C |   180 | 19.2 |        
   44103 | 2025-06-18 09:15:00 |         MASTER-OAFA | (22h 10m 38.05s , +32d 49m 01.3s) |   C |   180 | 19.3 |        
   44299 | 2025-06-18 09:18:17 |         MASTER-OAFA | (22h 10m 45.10s , +32d 48m 10.1s) |   C |   180 | 19.3 |        
   44495 | 2025-06-18 09:21:32 |         MASTER-OAFA | (22h 10m 39.16s , +32d 47m 18.9s) |   C |   180 | 19.2 |        
   44695 | 2025-06-18 09:24:52 |         MASTER-OAFA | (22h 10m 46.57s , +32d 48m 20.0s) |   C |   180 | 19.4 |        
   44892 | 2025-06-18 09:28:10 |         MASTER-OAFA | (22h 10m 40.99s , +32d 49m 34.1s) |   C |   180 | 19.3 |        
   45091 | 2025-06-18 09:31:28 |         MASTER-OAFA | (22h 10m 40.83s , +32d 48m 11.3s) |   C |   180 | 19.4 |        
   45288 | 2025-06-18 09:34:45 |         MASTER-OAFA | (22h 10m 43.19s , +32d 49m 35.4s) |   C |   180 | 19.4 |        
   45954 | 2025-06-18 09:45:52 |         MASTER-OAFA | (22h 10m 37.42s , +32d 50m 30.4s) |   C |   180 | 19.2 |        
   46090 | 2025-06-18 09:49:07 |         MASTER-OAFA | (22h 11m 54.16s , +32d 48m 37.4s) |   C |    60 | 19.0 |        
   46167 | 2025-06-18 09:50:25 |         MASTER-OAFA | (22h 11m 49.06s , +32d 47m 40.2s) |   C |    60 | 18.9 |        
   46242 | 2025-06-18 09:51:40 |         MASTER-OAFA | (22h 11m 54.77s , +32d 47m 51.6s) |   C |    60 | 19.0 |        
   46320 | 2025-06-18 09:52:57 |         MASTER-OAFA | (22h 11m 51.12s , +32d 49m 15.4s) |   C |    60 | 19.0 |        
   46394 | 2025-06-18 09:54:12 |         MASTER-OAFA | (22h 11m 51.03s , +32d 48m 14.8s) |   C |    60 | 18.9 |        
   46529 | 2025-06-18 09:55:27 |         MASTER-OAFA | (22h 10m 41.97s , +32d 50m 02.1s) |   C |   180 | 19.4 |        
   46668 | 2025-06-18 09:58:46 |         MASTER-OAFA | (22h 11m 47.18s , +32d 48m 54.7s) |   C |    60 | 19.0 |        
   46744 | 2025-06-18 10:00:01 |         MASTER-OAFA | (22h 11m 48.58s , +32d 49m 56.6s) |   C |    60 | 19.0 |        
   46824 | 2025-06-18 10:01:22 |         MASTER-OAFA | (22h 11m 54.25s , +32d 48m 59.2s) |   C |    60 | 18.9 |        
   46899 | 2025-06-18 10:02:36 |         MASTER-OAFA | (22h 11m 48.41s , +32d 48m 01.3s) |   C |    60 | 19.0 |        
   47230 | 2025-06-18 10:07:08 |         MASTER-OAFA | (22h 10m 40.30s , +32d 49m 05.2s) |   C |   180 | 19.3 |        
   47839 | 2025-06-18 10:17:16 |         MASTER-OAFA | (22h 10m 35.82s , +32d 48m 48.5s) |   C |   180 | 19.2 |        
   48457 | 2025-06-18 10:27:35 |         MASTER-OAFA | (22h 10m 35.06s , +32d 51m 27.5s) |   C |   180 | 19.0 |        
   73824 | 2025-06-18 17:30:21 |        MASTER-Tunka | (22h 11m 14.65s , +32d 15m 48.4s) |   C |   180 | 13.1 |        
   82701 | 2025-06-18 19:58:19 |   MASTER-Kislovodsk | (22h 10m 16.59s , +32d 52m 07.7s) |   C |   180 | 17.6 |        
   82908 | 2025-06-18 20:01:46 |   MASTER-Kislovodsk | (22h 10m 20.66s , +32d 50m 44.1s) |   C |   180 | 18.1 |        
   85945 | 2025-06-18 20:52:22 |   MASTER-Kislovodsk | (22h 10m 13.35s , +32d 55m 24.1s) |   C |   180 | 18.2 |        
   86147 | 2025-06-18 20:55:44 |   MASTER-Kislovodsk | (22h 10m 18.63s , +32d 53m 55.3s) |   C |   180 | 18.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12741
TYPE = 35
DAYS = 1


MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the FERMI GRB250617.88 (trigger No 771886893,21h 51m 52.80s , +32d 45m 00.0s, R=6.71) errorbox  7398 sec after notice time and 7550 sec after trigger time at 2025-06-17 23:07:18 UT, with upper limit up to  19.0 mag. The observations began at zenith distance = 31 deg. The sun  altitude  is -18.5 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB250617.88 errorbox  30646 sec after notice time and 30797 sec after trigger time at 2025-06-18 05:34:46 UT, with upper limit up to  19.4 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -74.8 deg. 

MASTER-Tunka robotic telescope  located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the FERMI GRB250617.88 errorbox  73582 sec after notice time and 73733 sec after trigger time at 2025-06-18 17:30:21 UT, with upper limit up to  13.1 mag. Observations started at twilight.  The observations began at zenith distance = 47 deg. The sun  altitude  is -15.4 deg. 

The galactic latitude b = -17 deg., longitude l = 85 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2906384

We obtain a following upper limits.  

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

    7640 | 2025-06-17 23:07:18 |   MASTER-Kislovodsk | (22h 10m 02.20s , +33d 01m 37.7s) |   C |   180 | 18.3 |        
    7820 | 2025-06-17 23:07:18 |   MASTER-Kislovodsk | (22h 10m 02.20s , +33d 01m 37.6s) |   C |   540 | 19.0 |  Coadd 
    7844 | 2025-06-17 23:10:41 |   MASTER-Kislovodsk | (22h 10m 07.83s , +33d 00m 40.5s) |   C |   180 | 18.2 |        
    8045 | 2025-06-17 23:14:03 |   MASTER-Kislovodsk | (22h 10m 03.42s , +32d 59m 45.7s) |   C |   180 | 18.2 |        
    8461 | 2025-06-17 23:20:59 |   MASTER-Kislovodsk | (22h 10m 04.39s , +33d 01m 35.1s) |   C |   180 | 18.3 |        
    8641 | 2025-06-17 23:20:59 |   MASTER-Kislovodsk | (22h 10m 04.40s , +33d 01m 35.1s) |   C |   540 | 19.0 |  Coadd 
    8661 | 2025-06-17 23:24:19 |   MASTER-Kislovodsk | (22h 10m 03.95s , +33d 00m 26.4s) |   C |   180 | 18.3 |        
    8863 | 2025-06-17 23:27:41 |   MASTER-Kislovodsk | (22h 10m 06.76s , +33d 01m 50.0s) |   C |   180 | 18.2 |        
    9065 | 2025-06-17 23:31:02 |   MASTER-Kislovodsk | (22h 10m 01.28s , +33d 01m 14.9s) |   C |   180 | 18.2 |        
    9245 | 2025-06-17 23:31:02 |   MASTER-Kislovodsk | (22h 10m 01.28s , +33d 01m 15.0s) |   C |   540 | 18.9 |  Coadd 
    9266 | 2025-06-17 23:34:24 |   MASTER-Kislovodsk | (22h 09m 58.76s , +33d 02m 21.3s) |   C |   180 | 18.2 |        
    9468 | 2025-06-17 23:37:46 |   MASTER-Kislovodsk | (22h 10m 05.44s , +33d 01m 26.7s) |   C |   180 | 18.1 |        
    9873 | 2025-06-17 23:44:31 |   MASTER-Kislovodsk | (22h 10m 03.51s , +33d 00m 54.3s) |   C |   180 | 18.2 |        
   10053 | 2025-06-17 23:44:31 |   MASTER-Kislovodsk | (22h 10m 03.52s , +33d 00m 54.3s) |   C |   540 | 18.9 |  Coadd 
   10075 | 2025-06-17 23:47:52 |   MASTER-Kislovodsk | (22h 10m 00.97s , +33d 02m 35.5s) |   C |   180 | 18.1 |        
   10276 | 2025-06-17 23:51:14 |   MASTER-Kislovodsk | (22h 10m 00.51s , +33d 01m 12.6s) |   C |   180 | 18.1 |        
   10477 | 2025-06-17 23:54:35 |   MASTER-Kislovodsk | (22h 10m 03.28s , +33d 02m 42.7s) |   C |   180 | 18.0 |        
   11162 | 2025-06-18 00:06:00 |   MASTER-Kislovodsk | (22h 09m 56.17s , +33d 03m 16.6s) |   C |   180 | 17.8 |        
   11363 | 2025-06-18 00:09:21 |   MASTER-Kislovodsk | (22h 10m 02.51s , +33d 02m 20.8s) |   C |   180 | 17.5 |        
   11571 | 2025-06-18 00:12:48 |   MASTER-Kislovodsk | (22h 09m 54.06s , +33d 01m 26.3s) |   C |   180 | 15.6 |        
   11772 | 2025-06-18 00:16:10 |   MASTER-Kislovodsk | (22h 10m 00.80s , +33d 01m 34.1s) |   C |   180 | 14.6 |        
   30888 | 2025-06-18 05:34:46 |         MASTER-OAFA | (22h 13m 06.89s , +32d 25m 32.4s) |   C |   180 | 17.3 |        
   31437 | 2025-06-18 05:44:55 |         MASTER-OAFA | (22h 11m 56.61s , +32d 28m 43.0s) |   C |    60 | 17.4 |        
   31517 | 2025-06-18 05:46:15 |         MASTER-OAFA | (22h 11m 55.21s , +32d 30m 09.7s) |   C |    60 | 17.7 |        
   32153 | 2025-06-18 05:55:51 |         MASTER-OAFA | (22h 13m 12.62s , +32d 28m 14.3s) |   C |   180 | 18.2 |        
   32789 | 2025-06-18 06:07:27 |         MASTER-OAFA | (22h 11m 57.63s , +32d 30m 11.6s) |   C |    60 | 18.1 |        
   32867 | 2025-06-18 06:08:45 |         MASTER-OAFA | (22h 11m 56.00s , +32d 29m 13.9s) |   C |    60 | 18.1 |        
   33439 | 2025-06-18 06:17:17 |         MASTER-OAFA | (22h 13m 03.73s , +32d 26m 36.5s) |   C |   180 | 18.6 |        
   34302 | 2025-06-18 06:32:40 |         MASTER-OAFA | (22h 11m 52.28s , +32d 30m 23.0s) |   C |    60 | 18.7 |        
   34703 | 2025-06-18 06:38:20 |         MASTER-OAFA | (22h 13m 00.33s , +32d 27m 26.4s) |   C |   180 | 19.0 |        
   35258 | 2025-06-18 06:48:36 |         MASTER-OAFA | (22h 11m 52.01s , +32d 29m 51.0s) |   C |    60 | 18.8 |        
   35510 | 2025-06-18 06:52:47 |         MASTER-OAFA | (22h 11m 44.48s , +32d 30m 18.4s) |   C |    60 | 18.8 |        
   35762 | 2025-06-18 06:56:59 |         MASTER-OAFA | (22h 11m 43.81s , +32d 27m 47.3s) |   C |    60 | 18.9 |        
   35899 | 2025-06-18 06:58:17 |         MASTER-OAFA | (22h 13m 00.77s , +32d 26m 09.6s) |   C |   180 | 18.7 |        
   36430 | 2025-06-18 07:08:07 |         MASTER-OAFA | (22h 11m 54.82s , +32d 41m 35.5s) |   C |    60 | 18.8 |        
   36505 | 2025-06-18 07:09:23 |         MASTER-OAFA | (22h 12m 00.96s , +32d 41m 26.0s) |   C |    60 | 18.8 |        
   36697 | 2025-06-18 07:12:35 |         MASTER-OAFA | (22h 11m 57.30s , +32d 41m 52.9s) |   C |    60 | 18.8 |        
   37130 | 2025-06-18 07:18:48 |         MASTER-OAFA | (22h 10m 44.78s , +32d 42m 59.2s) |   C |   180 | 19.1 |        
   38345 | 2025-06-18 07:39:03 |         MASTER-OAFA | (22h 10m 44.18s , +32d 43m 43.8s) |   C |   180 | 19.1 |        
   39566 | 2025-06-18 07:59:23 |         MASTER-OAFA | (22h 10m 41.96s , +32d 46m 31.3s) |   C |   180 | 19.0 |        
   40789 | 2025-06-18 08:19:46 |         MASTER-OAFA | (22h 10m 45.10s , +32d 45m 33.4s) |   C |   180 | 19.0 |        
   42073 | 2025-06-18 08:41:11 |         MASTER-OAFA | (22h 12m 00.23s , +32d 20m 23.5s) |   C |   180 | 17.8 |        
   42406 | 2025-06-18 08:47:44 |         MASTER-OAFA | (22h 10m 40.13s , +32d 21m 49.4s) |   C |    60 | 18.6 |        
   42485 | 2025-06-18 08:49:02 |         MASTER-OAFA | (22h 10m 39.14s , +32d 22m 52.7s) |   C |    60 | 18.5 |        
   42560 | 2025-06-18 08:50:18 |         MASTER-OAFA | (22h 10m 45.82s , +32d 21m 55.2s) |   C |    60 | 18.5 |        
   42638 | 2025-06-18 08:51:36 |         MASTER-OAFA | (22h 10m 37.15s , +32d 20m 57.8s) |   C |    60 | 18.5 |        
   42715 | 2025-06-18 08:52:53 |         MASTER-OAFA | (22h 10m 43.09s , +32d 21m 22.0s) |   C |    60 | 18.6 |        
   42794 | 2025-06-18 08:54:12 |         MASTER-OAFA | (22h 10m 39.05s , +32d 22m 58.9s) |   C |    60 | 18.9 |        
   42869 | 2025-06-18 08:55:27 |         MASTER-OAFA | (22h 10m 38.86s , +32d 21m 32.0s) |   C |    60 | 19.0 |        
   42943 | 2025-06-18 08:56:41 |         MASTER-OAFA | (22h 10m 41.95s , +32d 22m 41.1s) |   C |    60 | 19.0 |        
   43031 | 2025-06-18 08:58:08 |         MASTER-OAFA | (22h 10m 35.97s , +32d 22m 09.0s) |   C |    60 | 19.0 |        
   43114 | 2025-06-18 08:59:32 |         MASTER-OAFA | (22h 10m 36.15s , +32d 23m 10.9s) |   C |    60 | 19.0 |        
   43194 | 2025-06-18 09:00:51 |         MASTER-OAFA | (22h 10m 42.07s , +32d 22m 13.4s) |   C |    60 | 19.0 |        
   43336 | 2025-06-18 09:02:13 |         MASTER-OAFA | (22h 11m 46.34s , +32d 19m 02.9s) |   C |   180 | 19.4 |        
   43477 | 2025-06-18 09:05:34 |         MASTER-OAFA | (22h 10m 40.27s , +32d 21m 45.7s) |   C |    60 | 19.0 |        
   43906 | 2025-06-18 09:11:44 |         MASTER-OAFA | (22h 10m 40.02s , +32d 47m 50.8s) |   C |   180 | 19.2 |        
   44103 | 2025-06-18 09:15:00 |         MASTER-OAFA | (22h 10m 38.05s , +32d 49m 01.3s) |   C |   180 | 19.3 |        
   44299 | 2025-06-18 09:18:17 |         MASTER-OAFA | (22h 10m 45.10s , +32d 48m 10.1s) |   C |   180 | 19.3 |        
   44495 | 2025-06-18 09:21:32 |         MASTER-OAFA | (22h 10m 39.16s , +32d 47m 18.9s) |   C |   180 | 19.2 |        
   44695 | 2025-06-18 09:24:52 |         MASTER-OAFA | (22h 10m 46.57s , +32d 48m 20.0s) |   C |   180 | 19.4 |        
   44892 | 2025-06-18 09:28:10 |         MASTER-OAFA | (22h 10m 40.99s , +32d 49m 34.1s) |   C |   180 | 19.3 |        
   45091 | 2025-06-18 09:31:28 |         MASTER-OAFA | (22h 10m 40.83s , +32d 48m 11.3s) |   C |   180 | 19.4 |        
   45288 | 2025-06-18 09:34:45 |         MASTER-OAFA | (22h 10m 43.19s , +32d 49m 35.4s) |   C |   180 | 19.4 |        
   45954 | 2025-06-18 09:45:52 |         MASTER-OAFA | (22h 10m 37.42s , +32d 50m 30.4s) |   C |   180 | 19.2 |        
   46090 | 2025-06-18 09:49:07 |         MASTER-OAFA | (22h 11m 54.16s , +32d 48m 37.4s) |   C |    60 | 19.0 |        
   46167 | 2025-06-18 09:50:25 |         MASTER-OAFA | (22h 11m 49.06s , +32d 47m 40.2s) |   C |    60 | 18.9 |        
   46242 | 2025-06-18 09:51:40 |         MASTER-OAFA | (22h 11m 54.77s , +32d 47m 51.6s) |   C |    60 | 19.0 |        
   46320 | 2025-06-18 09:52:57 |         MASTER-OAFA | (22h 11m 51.12s , +32d 49m 15.4s) |   C |    60 | 19.0 |        
   46394 | 2025-06-18 09:54:12 |         MASTER-OAFA | (22h 11m 51.03s , +32d 48m 14.8s) |   C |    60 | 18.9 |        
   46529 | 2025-06-18 09:55:27 |         MASTER-OAFA | (22h 10m 41.97s , +32d 50m 02.1s) |   C |   180 | 19.4 |        
   46668 | 2025-06-18 09:58:46 |         MASTER-OAFA | (22h 11m 47.18s , +32d 48m 54.7s) |   C |    60 | 19.0 |        
   46744 | 2025-06-18 10:00:01 |         MASTER-OAFA | (22h 11m 48.58s , +32d 49m 56.6s) |   C |    60 | 19.0 |        
   46824 | 2025-06-18 10:01:22 |         MASTER-OAFA | (22h 11m 54.25s , +32d 48m 59.2s) |   C |    60 | 18.9 |        
   46899 | 2025-06-18 10:02:36 |         MASTER-OAFA | (22h 11m 48.41s , +32d 48m 01.3s) |   C |    60 | 19.0 |        
   47230 | 2025-06-18 10:07:08 |         MASTER-OAFA | (22h 10m 40.30s , +32d 49m 05.2s) |   C |   180 | 19.3 |        
   47839 | 2025-06-18 10:17:16 |         MASTER-OAFA | (22h 10m 35.82s , +32d 48m 48.5s) |   C |   180 | 19.2 |        
   48457 | 2025-06-18 10:27:35 |         MASTER-OAFA | (22h 10m 35.06s , +32d 51m 27.5s) |   C |   180 | 19.0 |        
   73824 | 2025-06-18 17:30:21 |        MASTER-Tunka | (22h 11m 14.65s , +32d 15m 48.4s) |   C |   180 | 13.1 |        
   82701 | 2025-06-18 19:58:19 |   MASTER-Kislovodsk | (22h 10m 16.59s , +32d 52m 07.7s) |   C |   180 | 17.6 |        
   82908 | 2025-06-18 20:01:46 |   MASTER-Kislovodsk | (22h 10m 20.66s , +32d 50m 44.1s) |   C |   180 | 18.1 |        
   85945 | 2025-06-18 20:52:22 |   MASTER-Kislovodsk | (22h 10m 13.35s , +32d 55m 24.1s) |   C |   180 | 18.2 |        
   86147 | 2025-06-18 20:55:44 |   MASTER-Kislovodsk | (22h 10m 18.63s , +32d 53m 55.3s) |   C |   180 | 18.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12735
TYPE = 35
DAYS = 0


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB250617.88 (trigger No 771886893,21h 51m 52.80s , +32d 45m 00.0s, R=6.71) errorbox  30646 sec after notice time and 30797 sec after trigger time at 2025-06-18 05:34:46 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -74.8 deg. 

The galactic latitude b = -17 deg., longitude l = 85 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2906384

We obtain a following upper limits.  

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

   30888 | 2025-06-18 05:34:46 |         MASTER-OAFA | (22h 13m 06.89s , +32d 25m 32.4s) |   C |   180 | 17.3 |        
   31437 | 2025-06-18 05:44:55 |         MASTER-OAFA | (22h 11m 56.61s , +32d 28m 43.0s) |   C |    60 | 17.4 |        
   31517 | 2025-06-18 05:46:15 |         MASTER-OAFA | (22h 11m 55.21s , +32d 30m 09.7s) |   C |    60 | 17.7 |        
   32153 | 2025-06-18 05:55:51 |         MASTER-OAFA | (22h 13m 12.62s , +32d 28m 14.3s) |   C |   180 | 18.2 |        
   32789 | 2025-06-18 06:07:27 |         MASTER-OAFA | (22h 11m 57.63s , +32d 30m 11.6s) |   C |    60 | 18.1 |        
   32867 | 2025-06-18 06:08:45 |         MASTER-OAFA | (22h 11m 56.00s , +32d 29m 13.9s) |   C |    60 | 18.1 |        
   33439 | 2025-06-18 06:17:17 |         MASTER-OAFA | (22h 13m 03.73s , +32d 26m 36.5s) |   C |   180 | 18.6 |        
   34302 | 2025-06-18 06:32:40 |         MASTER-OAFA | (22h 11m 52.28s , +32d 30m 23.0s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12734
TYPE = 35
DAYS = 0


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB250617.88 (trigger No 771886893,21h 51m 52.80s , +32d 45m 00.0s, R=6.71) errorbox  30646 sec after notice time and 30797 sec after trigger time at 2025-06-18 05:34:46 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -74.8 deg. 

The galactic latitude b = -17 deg., longitude l = 85 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2906384

We obtain a following upper limits.  

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

   30888 | 2025-06-18 05:34:46 |         MASTER-OAFA | (22h 13m 06.89s , +32d 25m 32.4s) |   C |   180 | 17.3 |        
   31437 | 2025-06-18 05:44:55 |         MASTER-OAFA | (22h 11m 56.61s , +32d 28m 43.0s) |   C |    60 | 17.4 |        
   31517 | 2025-06-18 05:46:15 |         MASTER-OAFA | (22h 11m 55.21s , +32d 30m 09.7s) |   C |    60 | 17.7 |        
   32153 | 2025-06-18 05:55:51 |         MASTER-OAFA | (22h 13m 12.62s , +32d 28m 14.3s) |   C |   180 | 18.2 |        
   32789 | 2025-06-18 06:07:27 |         MASTER-OAFA | (22h 11m 57.63s , +32d 30m 11.6s) |   C |    60 | 18.1 |        
   32867 | 2025-06-18 06:08:45 |         MASTER-OAFA | (22h 11m 56.00s , +32d 29m 13.9s) |   C |    60 | 18.1 |        
   33439 | 2025-06-18 06:17:17 |         MASTER-OAFA | (22h 13m 03.73s , +32d 26m 36.5s) |   C |   180 | 18.6 |        
   34302 | 2025-06-18 06:32:40 |         MASTER-OAFA | (22h 11m 52.28s , +32d 30m 23.0s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 12733
TYPE = 34
DAYS = 0


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the FERMI GRB250617.88 (trigger No 771886893,21h 51m 52.80s , +32d 45m 00.0s, R=6.71) errorbox  30646 sec after notice time and 30797 sec after trigger time at 2025-06-18 05:34:46 UT, with upper limit up to  18.7 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -74.8 deg. 

The galactic latitude b = -17 deg., longitude l = 85 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2906384

We obtain a following upper limits.  

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

   30888 | 2025-06-18 05:34:46 |         MASTER-OAFA | (22h 13m 06.89s , +32d 25m 32.4s) |   C |   180 | 17.3 |        
   31437 | 2025-06-18 05:44:55 |         MASTER-OAFA | (22h 11m 56.61s , +32d 28m 43.0s) |   C |    60 | 17.4 |        
   31517 | 2025-06-18 05:46:15 |         MASTER-OAFA | (22h 11m 55.21s , +32d 30m 09.7s) |   C |    60 | 17.7 |        
   32153 | 2025-06-18 05:55:51 |         MASTER-OAFA | (22h 13m 12.62s , +32d 28m 14.3s) |   C |   180 | 18.2 |        
   32789 | 2025-06-18 06:07:27 |         MASTER-OAFA | (22h 11m 57.63s , +32d 30m 11.6s) |   C |    60 | 18.1 |        
   32867 | 2025-06-18 06:08:45 |         MASTER-OAFA | (22h 11m 56.00s , +32d 29m 13.9s) |   C |    60 | 18.1 |        
   33439 | 2025-06-18 06:17:17 |         MASTER-OAFA | (22h 13m 03.73s , +32d 26m 36.5s) |   C |   180 | 18.6 |        
   34302 | 2025-06-18 06:32:40 |         MASTER-OAFA | (22h 11m 52.28s , +32d 30m 23.0s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025