MASTER Net MASTER Database: GRB250312.86 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 GRB250312.86
Trignum 763504621
Trigger time 2025-03-12 20:36:56.64
Notice time 2025-03-12 20:39:12.650406
Coord, eb (11h 21m 45.60s , -48d 14m 24.0s) , 6.94
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You are viewing outdated information, relevant error box is here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
2810182 2025-03-12 21:28:10.385327 12h 03m 26.40s -50d 57m 36.0s FERMI 4.87 alert 763504621 1 115 alert
2810119 2025-03-12 20:39:12.650406 11h 21m 45.60s -48d 14m 24.0s FERMI 6.94 alert 763504621 2 112 alert
2810102 2025-03-12 20:37:37.321972 09h 39m 00.00s -39d 55m 59.9s FERMI 14.5167 alert 763504621 1 111 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

2025-03-12 20:36:56 (JD 2460747.358981)

Siderial time 10.506220 h

Ra 11:21:45.60 Dec -48:14:24.00
(170.440000d, -48.240000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -28.59 Azimuth: 47.66

Sun: Altitude: -12.15 Azimuth: 260.05

Moon: Altitude: 9.20 Azimuth: 96.18

Tunka

Object: Altitude: -19.64 Azimuth: 34.18

Sun: Altitude: -25.95 Azimuth: 238.60

Moon: Altitude: 24.35 Azimuth: 76.32

Kislovodsk

Object: Altitude: -2.25 Azimuth: 354.72

Sun: Altitude: -48.35 Azimuth: 164.40

Moon: Altitude: 57.09 Azimuth: 6.97

Tavrida

Object: Altitude: -4.08 Azimuth: 349.10

Sun: Altitude: -45.20 Azimuth: 152.80

Moon: Altitude: 56.04 Azimuth: 351.80

SAAO

Object: Altitude: 62.66 Azimuth: 314.16

Sun: Altitude: -43.31 Azimuth: 46.69

Moon: Altitude: 43.38 Azimuth: 204.47

IAC

Object: Altitude: -7.14 Azimuth: 321.85

Sun: Altitude: -19.62 Azimuth: 97.27

Moon: Altitude: 35.73 Azimuth: 276.91

Argentina

Object: Altitude: 6.42 Azimuth: 324.43

Sun: Altitude: 28.70 Azimuth: 105.48

Moon: Altitude: -21.00 Azimuth: 269.85

Mexico

Object: Altitude: -67.48 Azimuth: 325.21

Sun: Altitude: 52.28 Azimuth: 28.12

Moon: Altitude: -38.52 Azimuth: 220.17

Ural

Object: Altitude: -15.55 Azimuth: 6.26

Sun: Altitude: -35.81 Azimuth: 188.27

Moon: Altitude: 41.24 Azimuth: 27.71

Vostryakovo

Object: Altitude: -14.16 Azimuth: 351.34

Sun: Altitude: -36.33 Azimuth: 161.26

Moon: Altitude: 45.62 Azimuth: 358.79

Gal. latitude: 11.869852 Gal. longitude: 288.353780

Dist. to Sun: 128.611352

Dist. to Moon: 60.160749

Moon coord.: (158.647251 d, 11.005063 d)

Sun coord.: (352.809902 d, -3.106928 d)

Lunar disk: 0.980480

Lunar phase: 16.062723

Lunar bright limb: 298.312205

No SN in this field

2025-03-12 20:39:12 (JD 2460747.360556)

Siderial time 10.544101 h

Ra 11:21:45.60 Dec -48:14:24.00
(170.440000d, -48.240000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -28.86 Azimuth: 47.96

Sun: Altitude: -11.79 Azimuth: 260.50

Moon: Altitude: 8.85 Azimuth: 96.59

Tunka

Object: Altitude: -19.84 Azimuth: 34.52

Sun: Altitude: -25.65 Azimuth: 239.13

Moon: Altitude: 24.01 Azimuth: 76.79

Kislovodsk

Object: Altitude: -2.21 Azimuth: 355.09

Sun: Altitude: -48.45 Azimuth: 165.24

Moon: Altitude: 57.03 Azimuth: 7.96

Tavrida

Object: Altitude: -4.01 Azimuth: 349.47

Sun: Altitude: -45.38 Azimuth: 153.56

Moon: Altitude: 56.08 Azimuth: 352.77

SAAO

Object: Altitude: 63.00 Azimuth: 314.51

Sun: Altitude: -43.66 Azimuth: 46.07

Moon: Altitude: 43.58 Azimuth: 203.78

IAC

Object: Altitude: -6.83 Azimuth: 322.07

Sun: Altitude: -20.12 Azimuth: 97.57

Moon: Altitude: 36.21 Azimuth: 277.22

Argentina

Object: Altitude: 6.71 Azimuth: 324.18

Sun: Altitude: 28.24 Azimuth: 105.11

Moon: Altitude: -20.53 Azimuth: 269.57

Mexico

Object: Altitude: -67.20 Azimuth: 324.55

Sun: Altitude: 52.05 Azimuth: 28.96

Moon: Altitude: -38.22 Azimuth: 220.75

Ural

Object: Altitude: -15.58 Azimuth: 6.65

Sun: Altitude: -35.76 Azimuth: 188.96

Moon: Altitude: 41.09 Azimuth: 28.40

Vostryakovo

Object: Altitude: -14.12 Azimuth: 351.73

Sun: Altitude: -36.43 Azimuth: 161.95

Moon: Altitude: 45.61 Azimuth: 359.56

Gal. latitude: 11.869852 Gal. longitude: 288.353780

Dist. to Sun: 128.611921

Dist. to Moon: 60.149407

Moon coord.: (158.664931 d, 10.996334 d)

Sun coord.: (352.811347 d, -3.106308 d)

Lunar disk: 0.980523

Lunar phase: 16.044906

Lunar bright limb: 298.316804

No SN in this field

2025-03-12 21:39:12 (JD 2460747.402222)

Siderial time 11.546839 h

Ra 11:21:45.60 Dec -48:14:24.00
(170.440000d, -48.240000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -36.41 Azimuth: 55.76

Sun: Altitude: -2.24 Azimuth: 272.14

Moon: Altitude: -0.42 Azimuth: 107.54

Tunka

Object: Altitude: -25.69 Azimuth: 43.33

Sun: Altitude: -17.18 Azimuth: 252.43

Moon: Altitude: 14.91 Azimuth: 88.52

Kislovodsk

Object: Altitude: -2.23 Azimuth: 5.10

Sun: Altitude: -49.08 Azimuth: 188.03

Moon: Altitude: 53.16 Azimuth: 32.19

Tavrida

Object: Altitude: -2.97 Azimuth: 359.44

Sun: Altitude: -48.26 Azimuth: 175.12

Moon: Altitude: 54.86 Azimuth: 18.07

SAAO

Object: Altitude: 70.93 Azimuth: 330.35

Sun: Altitude: -51.25 Azimuth: 26.86

Moon: Altitude: 46.78 Azimuth: 183.93

IAC

Object: Altitude: 0.72 Azimuth: 328.65

Sun: Altitude: -33.03 Azimuth: 106.09

Moon: Altitude: 48.64 Azimuth: 286.89

Argentina

Object: Altitude: 14.74 Azimuth: 318.11

Sun: Altitude: 15.71 Azimuth: 96.23

Moon: Altitude: -8.07 Azimuth: 262.29

Mexico

Object: Altitude: -58.60 Azimuth: 313.22

Sun: Altitude: 44.02 Azimuth: 47.99

Moon: Altitude: -29.18 Azimuth: 234.13

Ural

Object: Altitude: -17.25 Azimuth: 16.93

Sun: Altitude: -33.23 Azimuth: 206.91

Moon: Altitude: 36.10 Azimuth: 45.61

Vostryakovo

Object: Altitude: -13.65 Azimuth: 2.02

Sun: Altitude: -37.71 Azimuth: 180.69

Moon: Altitude: 44.00 Azimuth: 19.66

Gal. latitude: 11.869852 Gal. longitude: 288.353780

Dist. to Sun: 128.626960

Dist. to Moon: 59.850170

Moon coord.: (159.132423 d, 10.764979 d)

Sun coord.: (352.849583 d, -3.089901 d)

Lunar disk: 0.981644

Lunar phase: 15.573453

Lunar bright limb: 298.438522

No SN in this field

2025-03-14 18:05:38 (JD 2460749.253912)

Siderial time 8.109068 h

Ra 11:21:45.60 Dec -48:14:24.00
(170.440000d, -48.240000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -14.68 Azimuth: 26.89

Sun: Altitude: -32.79 Azimuth: 225.60

Moon: Altitude: 32.78 Azimuth: 39.49

Tunka

Object: Altitude: -11.05 Azimuth: 11.21

Sun: Altitude: -39.45 Azimuth: 196.31

Moon: Altitude: 37.90 Azimuth: 10.03

Kislovodsk

Object: Altitude: -9.74 Azimuth: 332.06

Sun: Altitude: -30.76 Azimuth: 120.22

Moon: Altitude: 26.11 Azimuth: 297.73

Tavrida

Object: Altitude: -13.67 Azimuth: 327.11

Sun: Altitude: -24.87 Azimuth: 113.29

Moon: Altitude: 20.15 Azimuth: 291.10

SAAO

Object: Altitude: 39.18 Azimuth: 308.51

Sun: Altitude: -15.69 Azimuth: 76.77

Moon: Altitude: 13.09 Azimuth: 261.35

IAC

Object: Altitude: -29.00 Azimuth: 312.08

Sun: Altitude: 13.78 Azimuth: 79.62

Moon: Altitude: -18.91 Azimuth: 259.20

Argentina

Object: Altitude: -7.06 Azimuth: 344.00

Sun: Altitude: 54.98 Azimuth: 143.16

Moon: Altitude: -55.10 Azimuth: 332.13

Mexico

Object: Altitude: -68.59 Azimuth: 31.83

Sun: Altitude: 51.11 Azimuth: 325.38

Moon: Altitude: -50.51 Azimuth: 137.30

Ural

Object: Altitude: -17.62 Azimuth: 341.58

Sun: Altitude: -30.04 Azimuth: 143.54

Moon: Altitude: 26.38 Azimuth: 319.45

Vostryakovo

Object: Altitude: -21.33 Azimuth: 327.56

Sun: Altitude: -22.19 Azimuth: 120.84

Moon: Altitude: 17.97 Azimuth: 297.73

Gal. latitude: 11.869852 Gal. longitude: 288.353780

Dist. to Sun: 129.273550

Dist. to Moon: 48.967616

Moon coord.: (179.181371 d, 0.137364 d)

Sun coord.: (354.546781 d, -2.359872 d)

Lunar disk: 0.997996

Lunar phase: 5.132060

Lunar bright limb: 115.662209

No SN in this field
Recent coverage and limits telegrams

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

  ID = 12234
TYPE = 35
DAYS = 1


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 250312B ( Fermi GBM team, GCN 39692) errorbox  1617 sec after notice time and 1650 sec after trigger time at 2025-03-12 21:04:27 UT, with upper limit up to  18.6 mag. The observations began at zenith distance = 25 deg. The sun  altitude  is -47.1 deg. 

The galactic latitude b = 11 deg., longitude l = 296 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2810181

We obtain a following upper limits.  

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

    1681 | 2025-03-12 21:04:27 |         MASTER-SAAO | (11h 29m 04.39s , -48d 18m 30.7s) |   C |    60 | 18.2 |        
    3030 | 2025-03-12 21:26:57 |         MASTER-SAAO | (11h 29m 01.89s , -48d 17m 08.7s) |   C |    60 | 18.2 |        
    3110 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |    60 | 18.0 |        
    3170 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |   180 | 18.4 |  Coadd 
    3189 | 2025-03-12 21:29:35 |         MASTER-SAAO | (12h 02m 31.65s , -51d 04m 13.4s) |   C |    60 | 17.9 |        
    3268 | 2025-03-12 21:30:54 |         MASTER-SAAO | (12h 02m 31.60s , -51d 04m 13.0s) |   C |    60 | 17.9 |        
    3347 | 2025-03-12 21:32:13 |         MASTER-SAAO | (12h 02m 31.51s , -51d 04m 12.3s) |   C |    60 | 17.9 |        
    8345 | 2025-03-12 22:55:32 |         MASTER-SAAO | (11h 29m 02.24s , -48d 15m 31.0s) |   C |    60 | 18.3 |        
    8746 | 2025-03-12 23:02:12 |         MASTER-SAAO | (11h 48m 21.64s , -52d 05m 24.1s) |   C |    60 | 18.1 |        
    8825 | 2025-03-12 23:03:31 |         MASTER-SAAO | (12h 01m 25.59s , -52d 03m 50.9s) |   C |    60 | 18.1 |        
    8984 | 2025-03-12 23:06:10 |         MASTER-SAAO | (11h 29m 03.61s , -48d 15m 01.0s) |   C |    60 | 18.4 |        
    9382 | 2025-03-12 23:12:48 |         MASTER-SAAO | (11h 48m 21.53s , -52d 03m 09.4s) |   C |    60 | 18.1 |        
    9462 | 2025-03-12 23:14:08 |         MASTER-SAAO | (12h 01m 25.10s , -52d 04m 26.4s) |   C |    60 | 18.1 |        
    9621 | 2025-03-12 23:16:47 |         MASTER-SAAO | (11h 29m 12.80s , -48d 16m 36.3s) |   C |    60 | 18.3 |        
   10021 | 2025-03-12 23:23:27 |         MASTER-SAAO | (11h 48m 22.29s , -52d 04m 53.5s) |   C |    60 | 18.0 |        
   10100 | 2025-03-12 23:24:47 |         MASTER-SAAO | (12h 01m 24.83s , -52d 04m 58.1s) |   C |    60 | 18.1 |        
   10263 | 2025-03-12 23:27:30 |         MASTER-SAAO | (11h 29m 10.47s , -48d 15m 27.8s) |   C |    60 | 18.2 |        
   10344 | 2025-03-12 23:28:50 |         MASTER-SAAO | (12h 13m 03.54s , -52d 04m 23.3s) |   C |    60 | 18.1 |        
   10423 | 2025-03-12 23:30:10 |         MASTER-SAAO | (12h 25m 56.43s , -52d 05m 42.7s) |   C |    60 | 18.2 |        
   10742 | 2025-03-12 23:35:28 |         MASTER-SAAO | (11h 48m 33.59s , -52d 02m 42.3s) |   C |    60 | 18.0 |        
   10822 | 2025-03-12 23:36:49 |         MASTER-SAAO | (12h 01m 20.64s , -52d 03m 53.4s) |   C |    60 | 17.9 |        
   10982 | 2025-03-12 23:39:28 |         MASTER-SAAO | (12h 13m 04.56s , -52d 04m 08.3s) |   C |    60 | 18.1 |        
   11064 | 2025-03-12 23:40:50 |         MASTER-SAAO | (12h 25m 55.23s , -52d 05m 28.1s) |   C |    60 | 18.2 |        
   11144 | 2025-03-12 23:42:11 |         MASTER-SAAO | (12h 07m 13.10s , -50d 09m 02.1s) |   C |    60 | 18.1 |        
   11224 | 2025-03-12 23:43:30 |         MASTER-SAAO | (12h 19m 35.43s , -50d 11m 00.6s) |   C |    60 | 18.2 |        
   11303 | 2025-03-12 23:44:50 |         MASTER-SAAO | (11h 43m 43.91s , -50d 09m 19.4s) |   C |    60 | 18.2 |        
   11383 | 2025-03-12 23:46:09 |         MASTER-SAAO | (11h 56m 03.83s , -50d 08m 35.5s) |   C |    60 | 18.1 |        
   11463 | 2025-03-12 23:47:29 |         MASTER-SAAO | (11h 48m 39.25s , -52d 03m 19.1s) |   C |    60 | 18.0 |        
   11542 | 2025-03-12 23:48:48 |         MASTER-SAAO | (12h 01m 24.80s , -52d 04m 36.8s) |   C |    60 | 17.9 |        
   11622 | 2025-03-12 23:50:08 |         MASTER-SAAO | (12h 13m 07.64s , -52d 04m 28.3s) |   C |    60 | 18.0 |        
   11701 | 2025-03-12 23:51:27 |         MASTER-SAAO | (12h 25m 57.72s , -52d 03m 32.3s) |   C |    60 | 18.2 |        
   11781 | 2025-03-12 23:52:47 |         MASTER-SAAO | (12h 07m 17.50s , -50d 10m 24.1s) |   C |    60 | 18.0 |        
   11861 | 2025-03-12 23:54:07 |         MASTER-SAAO | (12h 19m 41.28s , -50d 09m 12.6s) |   C |    60 | 18.2 |        
   11941 | 2025-03-12 23:55:27 |         MASTER-SAAO | (11h 43m 47.35s , -50d 09m 02.5s) |   C |    60 | 18.2 |        
   12021 | 2025-03-12 23:56:47 |         MASTER-SAAO | (11h 56m 08.48s , -50d 08m 18.9s) |   C |    60 | 18.0 |        
   12100 | 2025-03-12 23:58:07 |         MASTER-SAAO | (11h 48m 44.33s , -52d 03m 02.0s) |   C |    60 | 17.9 |        
   12180 | 2025-03-12 23:59:26 |         MASTER-SAAO | (12h 01m 30.74s , -52d 04m 20.1s) |   C |    60 | 17.9 |        
   12260 | 2025-03-13 00:00:46 |         MASTER-SAAO | (12h 13m 10.44s , -52d 04m 10.5s) |   C |    60 | 18.0 |        
   12343 | 2025-03-13 00:02:09 |         MASTER-SAAO | (12h 26m 00.32s , -52d 03m 14.3s) |   C |    60 | 18.0 |        
   12423 | 2025-03-13 00:03:29 |         MASTER-SAAO | (12h 07m 21.87s , -50d 10m 02.0s) |   C |    60 | 18.0 |        
   12502 | 2025-03-13 00:04:48 |         MASTER-SAAO | (12h 19m 47.15s , -50d 08m 56.9s) |   C |    60 | 18.1 |        
   12582 | 2025-03-13 00:06:08 |         MASTER-SAAO | (11h 43m 51.52s , -50d 08m 44.8s) |   C |    60 | 18.1 |        
   12662 | 2025-03-13 00:07:28 |         MASTER-SAAO | (11h 56m 12.41s , -50d 08m 01.6s) |   C |    60 | 18.1 |        
   12742 | 2025-03-13 00:08:48 |         MASTER-SAAO | (12h 02m 46.53s , -48d 16m 13.6s) |   C |    60 | 18.2 |        
   12821 | 2025-03-13 00:10:07 |         MASTER-SAAO | (12h 14m 46.49s , -48d 16m 09.8s) |   C |    60 | 18.1 |        
   12900 | 2025-03-13 00:11:26 |         MASTER-SAAO | (12h 13m 12.87s , -52d 02m 45.3s) |   C |    60 | 17.9 |        
   12980 | 2025-03-13 00:12:46 |         MASTER-SAAO | (12h 26m 04.99s , -52d 04m 35.4s) |   C |    60 | 18.1 |        
   13059 | 2025-03-13 00:14:05 |         MASTER-SAAO | (12h 07m 29.73s , -50d 08m 35.9s) |   C |    60 | 18.1 |        
   13138 | 2025-03-13 00:15:24 |         MASTER-SAAO | (12h 19m 45.12s , -50d 09m 29.0s) |   C |    60 | 18.2 |        
   13218 | 2025-03-13 00:16:44 |         MASTER-SAAO | (11h 43m 55.08s , -50d 07m 26.5s) |   C |    60 | 18.2 |        
   13297 | 2025-03-13 00:18:03 |         MASTER-SAAO | (11h 56m 24.36s , -50d 08m 44.1s) |   C |    60 | 18.0 |        
   13378 | 2025-03-13 00:19:24 |         MASTER-SAAO | (12h 02m 50.50s , -48d 15m 55.9s) |   C |    60 | 18.1 |        
   13457 | 2025-03-13 00:20:44 |         MASTER-SAAO | (12h 14m 50.60s , -48d 16m 08.5s) |   C |    60 | 18.1 |        
   13537 | 2025-03-13 00:22:03 |         MASTER-SAAO | (12h 13m 17.19s , -52d 02m 22.5s) |   C |    60 | 18.0 |        
   13616 | 2025-03-13 00:23:22 |         MASTER-SAAO | (12h 26m 09.40s , -52d 04m 04.0s) |   C |    60 | 18.1 |        
   13696 | 2025-03-13 00:24:42 |         MASTER-SAAO | (12h 07m 34.15s , -50d 08m 08.1s) |   C |    60 | 18.0 |        
   13775 | 2025-03-13 00:26:01 |         MASTER-SAAO | (12h 19m 49.66s , -50d 09m 12.2s) |   C |    60 | 18.1 |        
   13854 | 2025-03-13 00:27:20 |         MASTER-SAAO | (11h 43m 58.74s , -50d 07m 08.0s) |   C |    60 | 18.2 |        
   13934 | 2025-03-13 00:28:40 |         MASTER-SAAO | (11h 56m 27.15s , -50d 08m 25.8s) |   C |    60 | 18.1 |        
   14014 | 2025-03-13 00:30:00 |         MASTER-SAAO | (12h 02m 52.90s , -48d 15m 38.2s) |   C |    60 | 18.1 |        
   14097 | 2025-03-13 00:31:23 |         MASTER-SAAO | (12h 14m 54.25s , -48d 15m 40.7s) |   C |    60 | 18.1 |        
   14177 | 2025-03-13 00:32:43 |         MASTER-SAAO | (11h 54m 58.45s , -53d 56m 52.4s) |   C |    60 | 18.0 |        
   14256 | 2025-03-13 00:34:02 |         MASTER-SAAO | (12h 08m 28.73s , -53d 55m 41.2s) |   C |    60 | 18.0 |        
   14341 | 2025-03-13 00:35:27 |         MASTER-SAAO | (12h 07m 30.01s , -50d 08m 34.0s) |   C |    60 | 18.1 |        
   14421 | 2025-03-13 00:36:47 |         MASTER-SAAO | (12h 19m 52.05s , -50d 07m 54.4s) |   C |    60 | 18.1 |        
   14500 | 2025-03-13 00:38:07 |         MASTER-SAAO | (11h 44m 09.12s , -50d 07m 48.9s) |   C |    60 | 18.2 |        
   14580 | 2025-03-13 00:39:26 |         MASTER-SAAO | (11h 56m 23.85s , -50d 09m 06.9s) |   C |    60 | 18.1 |        
   14660 | 2025-03-13 00:40:46 |         MASTER-SAAO | (12h 03m 03.79s , -48d 15m 02.6s) |   C |    60 | 18.1 |        
   14740 | 2025-03-13 00:42:06 |         MASTER-SAAO | (12h 14m 54.54s , -48d 13m 41.7s) |   C |    60 | 18.1 |        
   14819 | 2025-03-13 00:43:25 |         MASTER-SAAO | (11h 55m 02.37s , -53d 56m 24.3s) |   C |    60 | 18.0 |        
   14898 | 2025-03-13 00:44:44 |         MASTER-SAAO | (12h 08m 32.19s , -53d 55m 17.2s) |   C |    60 | 18.0 |        
   14978 | 2025-03-13 00:46:04 |         MASTER-SAAO | (12h 20m 33.43s , -53d 55m 33.4s) |   C |    60 | 18.1 |        
   15057 | 2025-03-13 00:47:23 |         MASTER-SAAO | (12h 34m 05.78s , -53d 56m 58.6s) |   C |    60 | 18.1 |        
   15141 | 2025-03-13 00:48:47 |         MASTER-SAAO | (11h 40m 28.19s , -48d 14m 17.0s) |   C |    60 | 18.3 |        
   15220 | 2025-03-13 00:50:06 |         MASTER-SAAO | (11h 52m 19.95s , -48d 12m 44.8s) |   C |    60 | 18.2 |        
   15300 | 2025-03-13 00:51:26 |         MASTER-SAAO | (12h 03m 02.89s , -48d 14m 45.6s) |   C |    60 | 18.2 |        
   15379 | 2025-03-13 00:52:46 |         MASTER-SAAO | (12h 15m 00.66s , -48d 13m 46.5s) |   C |    60 | 18.2 |        
   15459 | 2025-03-13 00:54:05 |         MASTER-SAAO | (11h 55m 01.21s , -53d 55m 30.3s) |   C |    60 | 18.0 |        
   15540 | 2025-03-13 00:55:26 |         MASTER-SAAO | (12h 08m 30.68s , -53d 54m 52.4s) |   C |    60 | 18.0 |        
   15619 | 2025-03-13 00:56:46 |         MASTER-SAAO | (12h 20m 42.90s , -53d 56m 14.0s) |   C |    60 | 18.0 |        
   15699 | 2025-03-13 00:58:05 |         MASTER-SAAO | (12h 34m 03.70s , -53d 57m 39.3s) |   C |    60 | 18.1 |        
   15778 | 2025-03-13 00:59:24 |         MASTER-SAAO | (11h 40m 29.79s , -48d 13m 55.2s) |   C |    60 | 18.3 |        
   15858 | 2025-03-13 01:00:44 |         MASTER-SAAO | (11h 52m 22.10s , -48d 12m 46.6s) |   C |    60 | 18.2 |        
   15942 | 2025-03-13 01:02:08 |         MASTER-SAAO | (12h 03m 06.07s , -48d 14m 36.4s) |   C |    60 | 18.1 |        
   16021 | 2025-03-13 01:03:27 |         MASTER-SAAO | (12h 15m 02.99s , -48d 13m 05.1s) |   C |    60 | 18.1 |        
   16100 | 2025-03-13 01:04:47 |         MASTER-SAAO | (11h 55m 04.88s , -53d 55m 10.8s) |   C |    60 | 18.0 |        
   16180 | 2025-03-13 01:06:06 |         MASTER-SAAO | (12h 08m 33.17s , -53d 54m 33.3s) |   C |    60 | 18.0 |        
   16260 | 2025-03-13 01:07:26 |         MASTER-SAAO | (12h 20m 46.75s , -53d 55m 55.3s) |   C |    60 | 18.0 |        
   16339 | 2025-03-13 01:08:45 |         MASTER-SAAO | (12h 34m 07.80s , -53d 57m 20.7s) |   C |    60 | 18.1 |        
   16419 | 2025-03-13 01:10:05 |         MASTER-SAAO | (11h 40m 31.86s , -48d 13m 27.0s) |   C |    60 | 18.2 |        
   16498 | 2025-03-13 01:11:24 |         MASTER-SAAO | (11h 52m 24.85s , -48d 12m 22.2s) |   C |    60 | 18.2 |        
   16577 | 2025-03-13 01:12:43 |         MASTER-SAAO | (11h 59m 40.46s , -46d 18m 19.8s) |   C |    60 | 18.2 |        
   16738 | 2025-03-13 01:15:24 |         MASTER-SAAO | (12h 11m 11.27s , -46d 19m 31.6s) |   C |    60 | 18.1 |        
   16899 | 2025-03-13 01:18:05 |         MASTER-SAAO | (11h 55m 15.94s , -53d 55m 27.9s) |   C |    60 | 18.0 |        
   16978 | 2025-03-13 01:19:24 |         MASTER-SAAO | (12h 08m 40.32s , -53d 54m 19.2s) |   C |    60 | 18.0 |        
   17058 | 2025-03-13 01:20:44 |         MASTER-SAAO | (12h 20m 48.13s , -53d 56m 03.8s) |   C |    60 | 18.0 |        
   17216 | 2025-03-13 01:23:22 |         MASTER-SAAO | (11h 40m 28.71s , -48d 12m 17.9s) |   C |    60 | 18.2 |        
   17295 | 2025-03-13 01:24:41 |         MASTER-SAAO | (11h 52m 25.27s , -48d 11m 35.8s) |   C |    60 | 18.2 |        
   17375 | 2025-03-13 01:26:01 |         MASTER-SAAO | (11h 59m 43.75s , -46d 18m 49.2s) |   C |    60 | 18.1 |        
   17534 | 2025-03-13 01:28:40 |         MASTER-SAAO | (12h 11m 14.08s , -46d 20m 01.3s) |   C |    60 | 18.1 |        
   17692 | 2025-03-13 01:31:18 |         MASTER-SAAO | (11h 55m 15.66s , -53d 55m 02.0s) |   C |    60 | 18.0 |        
   17772 | 2025-03-13 01:32:38 |         MASTER-SAAO | (12h 08m 46.18s , -53d 54m 04.9s) |   C |    60 | 18.1 |        
   17851 | 2025-03-13 01:33:57 |         MASTER-SAAO | (12h 20m 48.22s , -53d 55m 06.1s) |   C |    60 | 18.0 |        
   17935 | 2025-03-13 01:35:21 |         MASTER-SAAO | (12h 34m 17.12s , -53d 54m 32.6s) |   C |    60 | 18.1 |        
   18014 | 2025-03-13 01:36:41 |         MASTER-SAAO | (11h 40m 37.61s , -48d 11m 51.0s) |   C |    60 | 18.2 |        
   18094 | 2025-03-13 01:38:00 |         MASTER-SAAO | (11h 52m 28.17s , -48d 13m 09.1s) |   C |    60 | 18.2 |        
   18173 | 2025-03-13 01:39:19 |         MASTER-SAAO | (11h 59m 46.93s , -46d 18m 57.5s) |   C |    60 | 18.2 |        
   18332 | 2025-03-13 01:41:58 |         MASTER-SAAO | (12h 11m 14.38s , -46d 19m 35.2s) |   C |    60 | 18.2 |        
   18490 | 2025-03-13 01:44:36 |         MASTER-SAAO | (12h 20m 51.61s , -53d 54m 44.7s) |   C |    60 | 18.1 |        
   18569 | 2025-03-13 01:45:55 |         MASTER-SAAO | (12h 34m 21.47s , -53d 54m 12.4s) |   C |    60 | 18.1 |        
   18649 | 2025-03-13 01:47:15 |         MASTER-SAAO | (11h 40m 37.97s , -48d 11m 28.4s) |   C |    60 | 18.3 |        
   18728 | 2025-03-13 01:48:34 |         MASTER-SAAO | (11h 52m 28.06s , -48d 12m 47.2s) |   C |    60 | 18.2 |        
   18808 | 2025-03-13 01:49:54 |         MASTER-SAAO | (11h 59m 47.89s , -46d 18m 59.7s) |   C |    60 | 18.2 |        
   18966 | 2025-03-13 01:52:32 |         MASTER-SAAO | (12h 11m 16.27s , -46d 19m 11.6s) |   C |    60 | 18.2 |        
   19125 | 2025-03-13 01:55:11 |         MASTER-SAAO | (11h 37m 48.46s , -46d 16m 06.5s) |   C |    60 | 18.2 |        
   19204 | 2025-03-13 01:56:30 |         MASTER-SAAO | (11h 49m 26.24s , -46d 17m 25.4s) |   C |    60 | 18.2 |        
   19283 | 2025-03-13 01:57:49 |         MASTER-SAAO | (12h 31m 32.13s , -50d 07m 32.3s) |   C |    60 | 18.2 |        
   19362 | 2025-03-13 01:59:08 |         MASTER-SAAO | (12h 43m 51.99s , -50d 06m 43.9s) |   C |    60 | 18.2 |        
   19442 | 2025-03-13 02:00:28 |         MASTER-SAAO | (11h 59m 46.54s , -46d 18m 37.0s) |   C |    60 | 18.1 |        
   19607 | 2025-03-13 02:03:13 |         MASTER-SAAO | (12h 11m 15.11s , -46d 17m 57.4s) |   C |    60 | 18.1 |        
   19765 | 2025-03-13 02:05:52 |         MASTER-SAAO | (11h 37m 54.88s , -46d 16m 44.6s) |   C |    60 | 18.2 |        
   19845 | 2025-03-13 02:07:11 |         MASTER-SAAO | (11h 49m 21.44s , -46d 18m 03.1s) |   C |    60 | 18.2 |        
   19924 | 2025-03-13 02:08:30 |         MASTER-SAAO | (12h 31m 33.43s , -50d 06m 56.8s) |   C |    60 | 18.2 |        
   20004 | 2025-03-13 02:09:50 |         MASTER-SAAO | (12h 43m 54.69s , -50d 06m 03.9s) |   C |    60 | 18.2 |        
   20103 | 2025-03-13 02:11:29 |         MASTER-SAAO | (11h 59m 47.63s , -46d 17m 58.4s) |   C |    60 | 18.1 |        
   20273 | 2025-03-13 02:14:19 |         MASTER-SAAO | (12h 11m 16.83s , -46d 17m 34.2s) |   C |    60 | 18.1 |        
   20432 | 2025-03-13 02:16:58 |         MASTER-SAAO | (11h 37m 56.34s , -46d 16m 20.9s) |   C |    60 | 18.1 |        
   20512 | 2025-03-13 02:18:18 |         MASTER-SAAO | (11h 49m 22.40s , -46d 17m 39.2s) |   C |    60 | 18.2 |        
   20591 | 2025-03-13 02:19:37 |         MASTER-SAAO | (12h 31m 35.44s , -50d 06m 56.7s) |   C |    60 | 18.2 |        
   20670 | 2025-03-13 02:20:56 |         MASTER-SAAO | (12h 43m 57.05s , -50d 05m 43.9s) |   C |    60 | 18.2 |        
   20750 | 2025-03-13 02:22:16 |         MASTER-SAAO | (12h 26m 06.38s , -48d 11m 16.0s) |   C |    60 | 18.3 |        
   20829 | 2025-03-13 02:23:35 |         MASTER-SAAO | (12h 37m 56.57s , -48d 12m 14.1s) |   C |    60 | 18.3 |        
   20909 | 2025-03-13 02:24:56 |         MASTER-SAAO | (12h 02m 58.03s , -55d 46m 47.0s) |   C |    60 | 18.0 |        
   20989 | 2025-03-13 02:26:15 |         MASTER-SAAO | (12h 17m 01.04s , -55d 48m 13.5s) |   C |    60 | 18.1 |        
   21068 | 2025-03-13 02:27:34 |         MASTER-SAAO | (11h 37m 54.90s , -46d 16m 44.2s) |   C |    60 | 18.1 |        
   21148 | 2025-03-13 02:28:54 |         MASTER-SAAO | (11h 49m 25.12s , -46d 15m 17.7s) |   C |    60 | 18.2 |        
   21229 | 2025-03-13 02:30:15 |         MASTER-SAAO | (12h 31m 34.57s , -50d 06m 17.5s) |   C |    60 | 18.2 |        
   21309 | 2025-03-13 02:31:35 |         MASTER-SAAO | (12h 44m 01.47s , -50d 05m 31.8s) |   C |    60 | 18.1 |        
   21388 | 2025-03-13 02:32:54 |         MASTER-SAAO | (12h 26m 01.22s , -48d 11m 27.4s) |   C |    60 | 18.3 |        
   21468 | 2025-03-13 02:34:14 |         MASTER-SAAO | (12h 37m 58.48s , -48d 10m 52.1s) |   C |    60 | 18.3 |        
   21547 | 2025-03-13 02:35:33 |         MASTER-SAAO | (12h 02m 59.34s , -55d 46m 25.3s) |   C |    60 | 18.0 |        
   21626 | 2025-03-13 02:36:52 |         MASTER-SAAO | (12h 17m 03.05s , -55d 47m 51.8s) |   C |    60 | 18.0 |        
   21706 | 2025-03-13 02:38:12 |         MASTER-SAAO | (11h 37m 54.86s , -46d 16m 35.3s) |   C |    60 | 18.1 |        
   21785 | 2025-03-13 02:39:31 |         MASTER-SAAO | (11h 49m 25.27s , -46d 15m 00.9s) |   C |    60 | 18.2 |        
   21864 | 2025-03-13 02:40:51 |         MASTER-SAAO | (12h 31m 36.01s , -50d 05m 50.3s) |   C |    60 | 18.2 |        
   21944 | 2025-03-13 02:42:10 |         MASTER-SAAO | (12h 44m 04.64s , -50d 04m 52.5s) |   C |    60 | 18.1 |        
   22023 | 2025-03-13 02:43:29 |         MASTER-SAAO | (12h 26m 02.95s , -48d 11m 05.0s) |   C |    60 | 18.2 |        
   22102 | 2025-03-13 02:44:48 |         MASTER-SAAO | (12h 37m 58.73s , -48d 10m 29.7s) |   C |    60 | 18.2 |        
   22181 | 2025-03-13 02:46:08 |         MASTER-SAAO | (12h 03m 00.72s , -55d 46m 03.4s) |   C |    60 | 17.9 |        
   22261 | 2025-03-13 02:47:27 |         MASTER-SAAO | (12h 17m 04.36s , -55d 47m 30.0s) |   C |    60 | 18.0 |        
   22340 | 2025-03-13 02:48:46 |         MASTER-SAAO | (11h 37m 55.49s , -46d 15m 58.9s) |   C |    60 | 18.1 |        
   22706 | 2025-03-13 02:54:52 |         MASTER-SAAO | (11h 49m 26.23s , -46d 14m 32.5s) |   C |    60 | 18.1 |        
   22785 | 2025-03-13 02:56:11 |         MASTER-SAAO | (12h 31m 32.47s , -50d 04m 35.9s) |   C |    60 | 18.2 |        
   22864 | 2025-03-13 02:57:30 |         MASTER-SAAO | (12h 43m 56.62s , -50d 04m 03.9s) |   C |    60 | 18.2 |        
   22944 | 2025-03-13 02:58:50 |         MASTER-SAAO | (12h 26m 06.43s , -48d 10m 21.0s) |   C |    60 | 18.2 |        
   23023 | 2025-03-13 03:00:09 |         MASTER-SAAO | (12h 37m 58.40s , -48d 11m 46.0s) |   C |    60 | 18.2 |        
   23104 | 2025-03-13 03:01:31 |         MASTER-SAAO | (12h 02m 58.50s , -55d 46m 16.1s) |   C |    60 | 18.0 |        
   23263 | 2025-03-13 03:04:09 |         MASTER-SAAO | (12h 21m 45.91s , -46d 15m 01.8s) |   C |    60 | 18.2 |        
   23343 | 2025-03-13 03:05:29 |         MASTER-SAAO | (12h 33m 12.20s , -46d 16m 24.5s) |   C |    60 | 18.5 |        
   23422 | 2025-03-13 03:06:48 |         MASTER-SAAO | (11h 29m 42.52s , -53d 50m 11.5s) |   C |    60 | 17.9 |        
   23501 | 2025-03-13 03:08:07 |         MASTER-SAAO | (11h 43m 10.44s , -53d 51m 30.6s) |   C |    60 | 18.0 |        
   23581 | 2025-03-13 03:09:27 |         MASTER-SAAO | (12h 26m 06.88s , -48d 10m 36.4s) |   C |    60 | 18.3 |        
   23660 | 2025-03-13 03:10:46 |         MASTER-SAAO | (12h 38m 02.35s , -48d 09m 31.1s) |   C |    60 | 18.3 |        
   23740 | 2025-03-13 03:12:06 |         MASTER-SAAO | (12h 02m 55.45s , -55d 45m 34.7s) |   C |    60 | 18.1 |        
   23819 | 2025-03-13 03:13:25 |         MASTER-SAAO | (12h 17m 09.83s , -55d 44m 26.7s) |   C |    60 | 18.1 |        
   23898 | 2025-03-13 03:14:45 |         MASTER-SAAO | (12h 21m 41.46s , -46d 15m 38.8s) |   C |    60 | 18.3 |        
   23978 | 2025-03-13 03:16:04 |         MASTER-SAAO | (12h 33m 12.92s , -46d 15m 02.0s) |   C |    60 | 18.5 |        
   24057 | 2025-03-13 03:17:23 |         MASTER-SAAO | (11h 29m 43.74s , -53d 49m 52.1s) |   C |    60 | 18.0 |        
   24136 | 2025-03-13 03:18:42 |         MASTER-SAAO | (11h 43m 08.86s , -53d 51m 10.6s) |   C |    60 | 18.0 |        
   24216 | 2025-03-13 03:20:02 |         MASTER-SAAO | (12h 26m 07.42s , -48d 10m 07.5s) |   C |    60 | 18.4 |        
   24295 | 2025-03-13 03:21:21 |         MASTER-SAAO | (12h 38m 02.70s , -48d 09m 29.2s) |   C |    60 | 18.4 |        
   24374 | 2025-03-13 03:22:40 |         MASTER-SAAO | (12h 02m 55.30s , -55d 45m 13.0s) |   C |    60 | 18.1 |        
   24453 | 2025-03-13 03:24:00 |         MASTER-SAAO | (12h 17m 08.07s , -55d 44m 31.4s) |   C |    60 | 18.0 |        
   24533 | 2025-03-13 03:25:19 |         MASTER-SAAO | (12h 21m 39.74s , -46d 15m 17.0s) |   C |    60 | 18.5 |        
   24612 | 2025-03-13 03:26:38 |         MASTER-SAAO | (12h 33m 14.25s , -46d 14m 40.2s) |   C |    60 | 18.6 |        
   24691 | 2025-03-13 03:27:57 |         MASTER-SAAO | (11h 29m 42.05s , -53d 49m 33.2s) |   C |    60 | 18.0 |        
   24771 | 2025-03-13 03:29:17 |         MASTER-SAAO | (11h 43m 08.41s , -53d 50m 51.2s) |   C |    60 | 18.1 |        
   24850 | 2025-03-13 03:30:36 |         MASTER-SAAO | (11h 20m 42.11s , -50d 00m 42.3s) |   C |    60 | 18.4 |        
   24930 | 2025-03-13 03:31:56 |         MASTER-SAAO | (11h 33m 09.06s , -50d 02m 29.1s) |   C |    60 | 18.4 |        
   25009 | 2025-03-13 03:33:15 |         MASTER-SAAO | (12h 38m 24.96s , -51d 57m 35.2s) |   C |    60 | 18.3 |        
   25168 | 2025-03-13 03:35:54 |         MASTER-SAAO | (12h 21m 45.11s , -46d 14m 55.7s) |   C |    60 | 18.4 |        
   25247 | 2025-03-13 03:37:13 |         MASTER-SAAO | (12h 33m 11.93s , -46d 16m 18.2s) |   C |    60 | 18.5 |        
   25326 | 2025-03-13 03:38:33 |         MASTER-SAAO | (11h 29m 42.03s , -53d 50m 09.9s) |   C |    60 | 17.8 |        
   25406 | 2025-03-13 03:39:52 |         MASTER-SAAO | (11h 43m 10.87s , -53d 48m 32.2s) |   C |    60 | 17.9 |        
   25485 | 2025-03-13 03:41:11 |         MASTER-SAAO | (11h 20m 40.89s , -50d 01m 43.2s) |   C |    60 | 18.0 |        
   25564 | 2025-03-13 03:42:30 |         MASTER-SAAO | (11h 33m 09.83s , -50d 00m 13.5s) |   C |    60 | 18.0 |        
   25644 | 2025-03-13 03:43:50 |         MASTER-SAAO | (12h 38m 25.95s , -51d 57m 13.6s) |   C |    60 | 17.8 |        
   25802 | 2025-03-13 03:46:28 |         MASTER-SAAO | (12h 21m 44.95s , -46d 14m 34.6s) |   C |    60 | 17.6 |        
   25882 | 2025-03-13 03:47:48 |         MASTER-SAAO | (12h 33m 12.97s , -46d 15m 56.9s) |   C |    60 | 17.6 |        
   25961 | 2025-03-13 03:49:07 |         MASTER-SAAO | (11h 29m 41.70s , -53d 49m 33.1s) |   C |    60 | 17.0 |        
   26040 | 2025-03-13 03:50:27 |         MASTER-SAAO | (11h 43m 10.18s , -53d 48m 36.2s) |   C |    60 | 17.0 |        
   26120 | 2025-03-13 03:51:46 |         MASTER-SAAO | (11h 20m 40.09s , -50d 01m 39.7s) |   C |    60 | 17.0 |        
   26199 | 2025-03-13 03:53:06 |         MASTER-SAAO | (11h 33m 10.16s , -50d 00m 00.6s) |   C |    60 | 16.9 |        
   26279 | 2025-03-13 03:54:25 |         MASTER-SAAO | (12h 38m 24.16s , -51d 56m 53.0s) |   C |    60 | 16.6 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 12225
TYPE = 35
DAYS = 0


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 250312B ( Fermi GBM team, GCN 39692) errorbox  1617 sec after notice time and 1650 sec after trigger time at 2025-03-12 21:04:27 UT, with upper limit up to  18.4 mag. The observations began at zenith distance = 25 deg. The sun  altitude  is -47.1 deg. 

The galactic latitude b = 11 deg., longitude l = 296 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2810182

We obtain a following upper limits.  

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

    1681 | 2025-03-12 21:04:27 |         MASTER-SAAO | (11h 29m 04.39s , -48d 18m 30.7s) |   C |    60 | 18.2 |        
    3030 | 2025-03-12 21:26:57 |         MASTER-SAAO | (11h 29m 01.89s , -48d 17m 08.7s) |   C |    60 | 18.2 |        
    3110 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |    60 | 18.0 |        
    3170 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |   180 | 18.4 |  Coadd 
    3189 | 2025-03-12 21:29:35 |         MASTER-SAAO | (12h 02m 31.65s , -51d 04m 13.4s) |   C |    60 | 17.9 |        
    3268 | 2025-03-12 21:30:54 |         MASTER-SAAO | (12h 02m 31.60s , -51d 04m 13.0s) |   C |    60 | 17.9 |        
    3347 | 2025-03-12 21:32:13 |         MASTER-SAAO | (12h 02m 31.51s , -51d 04m 12.3s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12224
TYPE = 35
DAYS = 0


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 250312B ( Fermi GBM team, GCN 39692) errorbox  1617 sec after notice time and 1650 sec after trigger time at 2025-03-12 21:04:27 UT, with upper limit up to  18.4 mag. The observations began at zenith distance = 25 deg. The sun  altitude  is -47.1 deg. 

The galactic latitude b = 11 deg., longitude l = 296 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2810182

We obtain a following upper limits.  

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

    1681 | 2025-03-12 21:04:27 |         MASTER-SAAO | (11h 29m 04.39s , -48d 18m 30.7s) |   C |    60 | 18.2 |        
    3030 | 2025-03-12 21:26:57 |         MASTER-SAAO | (11h 29m 01.89s , -48d 17m 08.7s) |   C |    60 | 18.2 |        
    3110 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |    60 | 18.0 |        
    3170 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |   180 | 18.4 |  Coadd 
    3189 | 2025-03-12 21:29:35 |         MASTER-SAAO | (12h 02m 31.65s , -51d 04m 13.4s) |   C |    60 | 17.9 |        
    3268 | 2025-03-12 21:30:54 |         MASTER-SAAO | (12h 02m 31.60s , -51d 04m 13.0s) |   C |    60 | 17.9 |        
    3347 | 2025-03-12 21:32:13 |         MASTER-SAAO | (12h 02m 31.51s , -51d 04m 12.3s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12223
TYPE = 34
DAYS = 0


MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 250312B ( Fermi GBM team, GCN 39692) errorbox  1617 sec after notice time and 1650 sec after trigger time at 2025-03-12 21:04:27 UT, with upper limit up to  18.4 mag. The observations began at zenith distance = 25 deg. The sun  altitude  is -47.1 deg. 

The galactic latitude b = 11 deg., longitude l = 296 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2810182

We obtain a following upper limits.  

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

    1681 | 2025-03-12 21:04:27 |         MASTER-SAAO | (11h 29m 04.39s , -48d 18m 30.7s) |   C |    60 | 18.2 |        
    3030 | 2025-03-12 21:26:57 |         MASTER-SAAO | (11h 29m 01.89s , -48d 17m 08.7s) |   C |    60 | 18.2 |        
    3110 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |    60 | 18.0 |        
    3170 | 2025-03-12 21:28:16 |         MASTER-SAAO | (12h 02m 31.64s , -51d 04m 13.5s) |   C |   180 | 18.4 |  Coadd 
    3189 | 2025-03-12 21:29:35 |         MASTER-SAAO | (12h 02m 31.65s , -51d 04m 13.4s) |   C |    60 | 17.9 |        
    3268 | 2025-03-12 21:30:54 |         MASTER-SAAO | (12h 02m 31.60s , -51d 04m 13.0s) |   C |    60 | 17.9 |        
    3347 | 2025-03-12 21:32:13 |         MASTER-SAAO | (12h 02m 31.51s , -51d 04m 12.3s) |   C |    60 | 17.9 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025