MASTER Net MASTER Database: GRB250312.91 pagePlease 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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MASTER WFC:
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MASTER II: |
General: |
| MASTER observatories and transients from them in error-field |
id | noticetime | coord2000 | satel | errorbox | type | trigger | seq | trig_type | links |
2810241 | 2025-03-12 21:53:48.063179 | 11h 20m 38.40s +63d 14m 24.0s | FERMI | 3.19 | alert | 763509110 | 4 | 112 | alert |
2810234 | 2025-03-12 21:52:53.70861 | 01h 43m 48.00s -72d 43m 59.9s | FERMI | 18.2833 | alert | 763509110 | 2 | 111 | alert |
MASTER optical transients in this field
Will be published in GCN, ATEL
Distance | datetime | coord2000 | observatory | camera | links |
trigger | notice | notice+1hr | now |
2025-03-12 21:51:45 (JD 2460747.410938) Siderial time 11.756578 h Ra 11:20:38.40 Dec 63:14:24.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: 41.06 Azimuth: 143.57 Sun: Altitude: -0.24 Azimuth: 274.55 Moon: Altitude: -2.30 Azimuth: 109.87 TunkaObject: Altitude: 52.14 Azimuth: 135.87 Sun: Altitude: -15.32 Azimuth: 255.05 Moon: Altitude: 12.99 Azimuth: 90.89 KislovodskObject: Altitude: 69.49 Azimuth: 165.69 Sun: Altitude: -48.67 Azimuth: 192.75 Moon: Altitude: 51.87 Azimuth: 36.63 TavridaObject: Altitude: 71.43 Azimuth: 176.34 Sun: Altitude: -48.36 Azimuth: 179.83 Moon: Altitude: 54.05 Azimuth: 23.03 SAAOObject: Altitude: -6.00 Azimuth: 184.79 Sun: Altitude: -52.35 Azimuth: 22.12 Moon: Altitude: 46.90 Azimuth: 179.55 IACObject: Altitude: 43.54 Azimuth: 207.46 Sun: Altitude: -35.67 Azimuth: 108.13 Moon: Altitude: 51.17 Azimuth: 289.40 ArgentinaObject: Altitude: -32.82 Azimuth: 211.76 Sun: Altitude: 13.05 Azimuth: 94.51 Moon: Altitude: -5.48 Azimuth: 260.77 MexicoObject: Altitude: 9.06 Azimuth: 196.37 Sun: Altitude: 41.97 Azimuth: 51.23 Moon: Altitude: -27.07 Azimuth: 236.53 UralObject: Altitude: 74.85 Azimuth: 125.73 Sun: Altitude: -32.41 Azimuth: 210.50 Moon: Altitude: 34.84 Azimuth: 48.94 VostryakovoObject: Altitude: 81.50 Azimuth: 160.21 Sun: Altitude: -37.62 Azimuth: 184.64 Moon: Altitude: 43.31 Azimuth: 23.69 Gal. latitude: 51.380844 Gal. longitude: 138.741101 Dist. to Sun: 119.813563 Dist. to Moon: 53.100664 Moon coord.: (159.230084 d, 10.716515 d) Sun coord.: (352.857581 d, -3.086469 d) Lunar disk: 0.981874 Lunar phase: 15.474877 Lunar bright limb: 298.463985 No SN in this field |
2025-03-12 21:53:03 (JD 2460747.411840) Siderial time 11.778304 h Ra 11:20:38.40 Dec 63:14:24.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: 40.94 Azimuth: 143.68 Sun: Altitude: -0.03 Azimuth: 274.80 Moon: Altitude: -2.49 Azimuth: 110.11 TunkaObject: Altitude: 52.00 Azimuth: 135.95 Sun: Altitude: -15.12 Azimuth: 255.32 Moon: Altitude: 12.79 Azimuth: 91.13 KislovodskObject: Altitude: 69.43 Azimuth: 165.30 Sun: Altitude: -48.61 Azimuth: 193.24 Moon: Altitude: 51.73 Azimuth: 37.08 TavridaObject: Altitude: 71.42 Azimuth: 175.88 Sun: Altitude: -48.36 Azimuth: 180.32 Moon: Altitude: 53.96 Azimuth: 23.53 SAAOObject: Altitude: -5.97 Azimuth: 184.64 Sun: Altitude: -52.45 Azimuth: 21.61 Moon: Altitude: 46.90 Azimuth: 179.10 IACObject: Altitude: 43.67 Azimuth: 207.37 Sun: Altitude: -35.94 Azimuth: 108.35 Moon: Altitude: 51.43 Azimuth: 289.67 ArgentinaObject: Altitude: -32.67 Azimuth: 211.74 Sun: Altitude: 12.78 Azimuth: 94.34 Moon: Altitude: -5.21 Azimuth: 260.62 MexicoObject: Altitude: 9.13 Azimuth: 196.50 Sun: Altitude: 41.75 Azimuth: 51.56 Moon: Altitude: -26.84 Azimuth: 236.78 UralObject: Altitude: 74.71 Azimuth: 125.62 Sun: Altitude: -32.32 Azimuth: 210.87 Moon: Altitude: 34.70 Azimuth: 49.28 VostryakovoObject: Altitude: 81.44 Azimuth: 159.32 Sun: Altitude: -37.60 Azimuth: 185.05 Moon: Altitude: 43.23 Azimuth: 24.10 Gal. latitude: 51.380844 Gal. longitude: 138.741101 Dist. to Sun: 119.813188 Dist. to Moon: 53.104597 Moon coord.: (159.240198 d, 10.711493 d) Sun coord.: (352.858409 d, -3.086114 d) Lunar disk: 0.981898 Lunar phase: 15.464667 Lunar bright limb: 298.466623 No SN in this field |
2025-03-12 22:53:03 (JD 2460747.453507) Siderial time 12.781042 h Ra 11:20:38.40 Dec 63:14:24.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: 35.60 Azimuth: 148.97 Sun: Altitude: 9.38 Azimuth: 286.51 Moon: Altitude: -11.04 Azimuth: 121.70 TunkaObject: Altitude: 45.75 Azimuth: 139.88 Sun: Altitude: -5.96 Azimuth: 267.39 Moon: Altitude: 3.67 Azimuth: 102.31 KislovodskObject: Altitude: 65.31 Azimuth: 151.29 Sun: Altitude: -44.22 Azimuth: 214.10 Moon: Altitude: 43.93 Azimuth: 55.09 TavridaObject: Altitude: 68.86 Azimuth: 157.37 Sun: Altitude: -46.24 Azimuth: 202.27 Moon: Altitude: 47.94 Azimuth: 44.29 SAAOObject: Altitude: -5.70 Azimuth: 177.85 Sun: Altitude: -54.50 Azimuth: 356.54 Moon: Altitude: 44.75 Azimuth: 158.71 IACObject: Altitude: 49.24 Azimuth: 201.79 Sun: Altitude: -47.98 Azimuth: 120.44 Moon: Altitude: 62.66 Azimuth: 306.27 ArgentinaObject: Altitude: -26.09 Azimuth: 209.98 Sun: Altitude: 0.03 Azimuth: 86.40 Moon: Altitude: 6.97 Azimuth: 253.06 MexicoObject: Altitude: 13.38 Azimuth: 201.86 Sun: Altitude: 30.86 Azimuth: 64.37 Moon: Altitude: -15.98 Azimuth: 246.84 UralObject: Altitude: 67.96 Azimuth: 124.35 Sun: Altitude: -27.17 Azimuth: 227.10 Moon: Altitude: 27.88 Azimuth: 64.05 VostryakovoObject: Altitude: 76.51 Azimuth: 134.35 Sun: Altitude: -35.48 Azimuth: 203.54 Moon: Altitude: 38.49 Azimuth: 42.03 Gal. latitude: 51.380844 Gal. longitude: 138.741101 Dist. to Sun: 119.795845 Dist. to Moon: 53.287595 Moon coord.: (159.706498 d, 10.479434 d) Sun coord.: (352.896643 d, -3.069705 d) Lunar disk: 0.982977 Lunar phase: 14.993568 Lunar bright limb: 298.588468 No SN in this field |
2025-03-14 19:06:02 (JD 2460749.295856) Siderial time 9.118491 h Ra 11:20:38.40 Dec 63:14:24.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: 57.77 Azimuth: 135.26 Sun: Altitude: -25.07 Azimuth: 240.45 Moon: Altitude: 25.72 Azimuth: 54.29 TunkaObject: Altitude: 69.67 Azimuth: 136.53 Sun: Altitude: -35.41 Azimuth: 214.66 Moon: Altitude: 34.70 Azimuth: 27.87 KislovodskObject: Altitude: 64.60 Azimuth: 210.03 Sun: Altitude: -39.37 Azimuth: 135.41 Moon: Altitude: 34.64 Azimuth: 311.64 TavridaObject: Altitude: 62.12 Azimuth: 215.39 Sun: Altitude: -34.14 Azimuth: 127.02 Moon: Altitude: 29.22 Azimuth: 303.86 SAAOObject: Altitude: -13.58 Azimuth: 200.84 Sun: Altitude: -27.82 Azimuth: 67.08 Moon: Altitude: 25.32 Azimuth: 252.69 IACObject: Altitude: 26.14 Azimuth: 210.07 Sun: Altitude: 0.59 Azimuth: 87.02 Moon: Altitude: -6.19 Azimuth: 266.77 ArgentinaObject: Altitude: -49.91 Azimuth: 206.51 Sun: Altitude: 45.65 Azimuth: 124.43 Moon: Altitude: -47.18 Azimuth: 312.25 MexicoObject: Altitude: 4.30 Azimuth: 179.37 Sun: Altitude: 56.15 Azimuth: 349.54 Moon: Altitude: -57.39 Azimuth: 159.56 UralObject: Altitude: 81.60 Azimuth: 217.74 Sun: Altitude: -33.86 Azimuth: 160.77 Moon: Altitude: 30.44 Azimuth: 335.53 VostryakovoObject: Altitude: 71.60 Azimuth: 231.34 Sun: Altitude: -28.90 Azimuth: 135.84 Moon: Altitude: 24.60 Azimuth: 311.82 Gal. latitude: 51.380844 Gal. longitude: 138.741101 Dist. to Sun: 119.015412 Dist. to Moon: 63.738192 Moon coord.: (179.625206 d, -0.105883 d) Sun coord.: (354.585183 d, -2.343318 d) Lunar disk: 0.997618 Lunar phase: 5.594467 Lunar bright limb: 115.954748 No SN in this field |
####################################################################################### ####################################################################################### ID = 12235 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 GRB250312.91 (trigger No 763509110,11h 20m 38.40s , +63d 14m 24.0s, R=3.19) errorbox 38 sec after notice time and 61 sec after trigger time at 2025-03-12 21:52:47 UT, with upper limit up to 17.8 mag. The observations began at zenith distance = 21 deg. The sun altitude is -49.4 deg. MASTER-Tunka robotic telescope located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the FERMI GRB250312.91 errorbox 54862 sec after notice time and 54885 sec after trigger time at 2025-03-13 13:06:30 UT, with upper limit up to 18.6 mag. The observations began at zenith distance = 32 deg. The sun altitude is -19.3 deg. The galactic latitude b = 51 deg., longitude l = 139 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2810237 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 67 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.68s , +63d 26m 27.5s) | C | 10 | 16.0 | 82 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.60s , +63d 26m 28.4s) | C | 40 | 17.1 | Coadd 96 | 2025-03-12 21:53:16 | MASTER-Kislovodsk | (11h 35m 54.54s , +63d 26m 29.5s) | C | 10 | 16.0 | 132 | 2025-03-12 21:53:47 | MASTER-Kislovodsk | (11h 35m 54.37s , +63d 26m 30.6s) | C | 20 | 16.8 | 177 | 2025-03-12 21:54:27 | MASTER-Kislovodsk | (11h 20m 23.59s , +63d 23m 11.2s) | C | 30 | 17.1 | 222 | 2025-03-12 21:54:27 | MASTER-Kislovodsk | (11h 20m 23.46s , +63d 23m 11.6s) | C | 120 | 17.8 | Coadd 232 | 2025-03-12 21:55:17 | MASTER-Kislovodsk | (11h 20m 23.31s , +63d 23m 12.5s) | C | 40 | 17.3 | 297 | 2025-03-12 21:56:17 | MASTER-Kislovodsk | (11h 20m 22.85s , +63d 23m 13.8s) | C | 50 | 17.3 | 372 | 2025-03-12 21:57:27 | MASTER-Kislovodsk | (11h 20m 22.40s , +63d 23m 15.2s) | C | 60 | 17.5 | 2977 | 2025-03-12 22:40:52 | MASTER-Kislovodsk | (11h 20m 50.85s , +64d 00m 00.2s) | C | 60 | 17.0 | 3056 | 2025-03-12 22:42:11 | MASTER-Kislovodsk | (11h 39m 06.63s , +64d 01m 20.3s) | C | 60 | 17.0 | 3216 | 2025-03-12 22:44:51 | MASTER-Kislovodsk | (11h 10m 21.65s , +62d 04m 47.8s) | C | 60 | 17.0 | 3295 | 2025-03-12 22:46:10 | MASTER-Kislovodsk | (11h 27m 24.73s , +62d 06m 53.5s) | C | 60 | 17.0 | 3844 | 2025-03-12 22:55:19 | MASTER-Kislovodsk | (11h 20m 53.36s , +63d 59m 39.7s) | C | 60 | 17.1 | 4019 | 2025-03-12 22:58:14 | MASTER-Kislovodsk | (11h 39m 06.36s , +63d 59m 52.6s) | C | 60 | 17.3 | 4180 | 2025-03-12 23:00:55 | MASTER-Kislovodsk | (11h 10m 11.84s , +62d 05m 29.7s) | C | 60 | 17.3 | 4260 | 2025-03-12 23:02:15 | MASTER-Kislovodsk | (11h 27m 16.71s , +62d 06m 50.2s) | C | 60 | 17.1 | 4419 | 2025-03-12 23:04:54 | MASTER-Kislovodsk | (11h 42m 47.01s , +62d 05m 14.2s) | C | 60 | 17.1 | 4499 | 2025-03-12 23:06:14 | MASTER-Kislovodsk | (11h 59m 51.17s , +62d 07m 06.7s) | C | 60 | 17.0 | 4680 | 2025-03-12 23:09:15 | MASTER-Kislovodsk | (11h 20m 50.23s , +64d 00m 33.8s) | C | 60 | 16.9 | 4853 | 2025-03-12 23:12:08 | MASTER-Kislovodsk | (11h 38m 58.67s , +64d 01m 25.3s) | C | 60 | 17.2 | 4933 | 2025-03-12 23:13:28 | MASTER-Kislovodsk | (11h 10m 15.63s , +62d 05m 51.3s) | C | 60 | 17.2 | 5106 | 2025-03-12 23:16:21 | MASTER-Kislovodsk | (11h 27m 20.85s , +62d 05m 35.1s) | C | 60 | 17.0 | 5280 | 2025-03-12 23:19:15 | MASTER-Kislovodsk | (11h 42m 42.12s , +62d 05m 44.3s) | C | 60 | 17.0 | 5360 | 2025-03-12 23:20:35 | MASTER-Kislovodsk | (11h 59m 50.58s , +62d 07m 20.6s) | C | 60 | 17.0 | 5440 | 2025-03-12 23:21:55 | MASTER-Kislovodsk | (11h 20m 40.23s , +63d 59m 55.4s) | C | 60 | 17.0 | 5519 | 2025-03-12 23:23:14 | MASTER-Kislovodsk | (11h 38m 55.48s , +64d 01m 15.7s) | C | 60 | 17.0 | 5599 | 2025-03-12 23:24:34 | MASTER-Kislovodsk | (11h 10m 11.91s , +62d 05m 39.2s) | C | 60 | 17.0 | 5679 | 2025-03-12 23:25:54 | MASTER-Kislovodsk | (11h 33m 39.37s , +65d 53m 09.5s) | C | 60 | 17.2 | 5758 | 2025-03-12 23:27:13 | MASTER-Kislovodsk | (11h 53m 12.68s , +65d 55m 12.8s) | C | 60 | 17.2 | 6768 | 2025-03-12 23:44:03 | MASTER-Kislovodsk | (11h 27m 18.20s , +62d 05m 16.3s) | C | 60 | 16.7 | 6942 | 2025-03-12 23:46:57 | MASTER-Kislovodsk | (11h 42m 41.64s , +62d 04m 59.6s) | C | 60 | 16.8 | 7022 | 2025-03-12 23:48:17 | MASTER-Kislovodsk | (11h 59m 44.25s , +62d 06m 34.0s) | C | 60 | 17.3 | 7101 | 2025-03-12 23:49:36 | MASTER-Kislovodsk | (11h 20m 39.21s , +63d 58m 22.1s) | C | 60 | 17.5 | 7181 | 2025-03-12 23:50:56 | MASTER-Kislovodsk | (11h 38m 56.47s , +64d 00m 03.8s) | C | 60 | 17.5 | 7261 | 2025-03-12 23:52:16 | MASTER-Kislovodsk | (11h 10m 02.31s , +62d 04m 44.0s) | C | 60 | 17.2 | 7340 | 2025-03-12 23:53:35 | MASTER-Kislovodsk | (11h 33m 28.89s , +65d 54m 12.1s) | C | 60 | 17.5 | 7420 | 2025-03-12 23:54:55 | MASTER-Kislovodsk | (11h 53m 10.37s , +65d 53m 36.7s) | C | 60 | 17.5 | 7500 | 2025-03-12 23:56:15 | MASTER-Kislovodsk | (11h 27m 07.39s , +62d 04m 06.9s) | C | 60 | 16.6 | 7579 | 2025-03-12 23:57:34 | MASTER-Kislovodsk | (11h 42m 38.70s , +62d 04m 37.3s) | C | 60 | 16.7 | 7659 | 2025-03-12 23:58:54 | MASTER-Kislovodsk | (11h 59m 41.26s , +62d 06m 25.5s) | C | 60 | 17.0 | 7823 | 2025-03-13 00:01:38 | MASTER-Kislovodsk | (11h 20m 33.05s , +63d 58m 44.3s) | C | 60 | 17.1 | 7903 | 2025-03-13 00:02:58 | MASTER-Kislovodsk | (11h 38m 48.02s , +64d 00m 11.3s) | C | 60 | 17.3 | 7983 | 2025-03-13 00:04:18 | MASTER-Kislovodsk | (11h 10m 07.20s , +62d 04m 24.1s) | C | 60 | 16.8 | 8062 | 2025-03-13 00:05:37 | MASTER-Kislovodsk | (11h 33m 24.90s , +65d 51m 54.0s) | C | 60 | 16.8 | 8142 | 2025-03-13 00:06:57 | MASTER-Kislovodsk | (11h 53m 06.18s , +65d 52m 27.1s) | C | 60 | 16.9 | 8222 | 2025-03-13 00:08:17 | MASTER-Kislovodsk | (11h 27m 07.87s , +62d 05m 26.9s) | C | 60 | 17.2 | 8302 | 2025-03-13 00:09:36 | MASTER-Kislovodsk | (11h 42m 31.99s , +62d 04m 13.0s) | C | 60 | 17.3 | 8381 | 2025-03-13 00:10:56 | MASTER-Kislovodsk | (11h 59m 40.98s , +62d 06m 03.7s) | C | 60 | 17.2 | 8461 | 2025-03-13 00:12:16 | MASTER-Kislovodsk | (11h 31m 57.44s , +60d 11m 54.4s) | C | 60 | 17.0 | 8541 | 2025-03-13 00:13:35 | MASTER-Kislovodsk | (11h 48m 10.78s , +60d 11m 18.8s) | C | 60 | 17.4 | 8620 | 2025-03-13 00:14:55 | MASTER-Kislovodsk | (11h 55m 17.24s , +63d 58m 34.4s) | C | 60 | 17.5 | 8780 | 2025-03-13 00:17:35 | MASTER-Kislovodsk | (11h 33m 23.42s , +65d 51m 48.8s) | C | 60 | 17.3 | 8860 | 2025-03-13 00:18:55 | MASTER-Kislovodsk | (11h 53m 02.36s , +65d 53m 58.5s) | C | 60 | 17.3 | 8939 | 2025-03-13 00:20:14 | MASTER-Kislovodsk | (11h 42m 26.48s , +62d 04m 54.3s) | C | 60 | 16.6 | 9019 | 2025-03-13 00:21:34 | MASTER-Kislovodsk | (11h 59m 31.12s , +62d 06m 19.6s) | C | 60 | 16.5 | 9099 | 2025-03-13 00:22:54 | MASTER-Kislovodsk | (11h 32m 02.57s , +60d 10m 36.2s) | C | 60 | 15.7 | 9179 | 2025-03-13 00:24:13 | MASTER-Kislovodsk | (11h 48m 03.57s , +60d 10m 00.7s) | C | 60 | 16.3 | 9258 | 2025-03-13 00:25:33 | MASTER-Kislovodsk | (11h 55m 13.76s , +63d 58m 26.7s) | C | 60 | 15.8 | 9418 | 2025-03-13 00:28:13 | MASTER-Kislovodsk | (11h 33m 20.79s , +65d 51m 30.3s) | C | 60 | 16.3 | 9498 | 2025-03-13 00:29:33 | MASTER-Kislovodsk | (11h 53m 00.60s , +65d 53m 40.0s) | C | 60 | 16.7 | 9577 | 2025-03-13 00:30:52 | MASTER-Kislovodsk | (11h 01m 20.38s , +60d 10m 18.3s) | C | 60 | 15.9 | 9657 | 2025-03-13 00:32:12 | MASTER-Kislovodsk | (11h 17m 31.03s , +60d 09m 47.7s) | C | 60 | 15.8 | 9737 | 2025-03-13 00:33:32 | MASTER-Kislovodsk | (11h 31m 53.47s , +60d 09m 14.6s) | C | 60 | 15.5 | 9817 | 2025-03-13 00:34:52 | MASTER-Kislovodsk | (11h 48m 07.33s , +60d 09m 56.9s) | C | 60 | 16.2 | 10136 | 2025-03-13 00:40:11 | MASTER-Kislovodsk | (11h 52m 52.19s , +65d 52m 28.1s) | C | 60 | 15.7 | 10375 | 2025-03-13 00:44:10 | MASTER-Kislovodsk | (11h 31m 53.32s , +60d 08m 54.0s) | C | 60 | 14.9 | 10534 | 2025-03-13 00:46:49 | MASTER-Kislovodsk | (11h 55m 05.51s , +63d 59m 07.1s) | C | 60 | 16.4 | 10774 | 2025-03-13 00:50:49 | MASTER-Kislovodsk | (11h 15m 35.04s , +65d 51m 56.9s) | C | 60 | 15.9 | 10853 | 2025-03-13 00:52:08 | MASTER-Kislovodsk | (11h 01m 22.00s , +60d 08m 32.8s) | C | 60 | 16.4 | 10933 | 2025-03-13 00:53:28 | MASTER-Kislovodsk | (11h 17m 20.84s , +60d 08m 04.5s) | C | 60 | 16.1 | 11023 | 2025-03-13 00:54:58 | MASTER-Kislovodsk | (11h 31m 55.97s , +60d 08m 41.7s) | C | 60 | 16.3 | 11102 | 2025-03-13 00:56:17 | MASTER-Kislovodsk | (11h 47m 58.61s , +60d 10m 29.5s) | C | 60 | 16.7 | 11182 | 2025-03-13 00:57:37 | MASTER-Kislovodsk | (11h 55m 02.76s , +63d 57m 19.5s) | C | 60 | 16.5 | 11341 | 2025-03-13 01:00:16 | MASTER-Kislovodsk | (10h 55m 58.63s , +65d 49m 51.2s) | C | 60 | 17.0 | 11421 | 2025-03-13 01:01:36 | MASTER-Kislovodsk | (11h 15m 31.83s , +65d 51m 31.1s) | C | 60 | 16.9 | 11501 | 2025-03-13 01:02:56 | MASTER-Kislovodsk | (11h 01m 21.63s , +60d 08m 06.4s) | C | 60 | 16.7 | 11581 | 2025-03-13 01:04:16 | MASTER-Kislovodsk | (11h 17m 18.76s , +60d 07m 39.1s) | C | 60 | 16.6 | 11661 | 2025-03-13 01:05:36 | MASTER-Kislovodsk | (11h 31m 54.62s , +60d 08m 22.5s) | C | 60 | 16.9 | 11740 | 2025-03-13 01:06:55 | MASTER-Kislovodsk | (11h 47m 55.88s , +60d 10m 35.8s) | C | 60 | 17.4 | 11820 | 2025-03-13 01:08:15 | MASTER-Kislovodsk | (11h 55m 00.57s , +63d 57m 00.4s) | C | 60 | 17.4 | 11979 | 2025-03-13 01:10:54 | MASTER-Kislovodsk | (10h 55m 56.06s , +65d 49m 24.9s) | C | 60 | 17.3 | 12059 | 2025-03-13 01:12:14 | MASTER-Kislovodsk | (11h 15m 30.59s , +65d 51m 07.1s) | C | 60 | 17.5 | 12139 | 2025-03-13 01:13:34 | MASTER-Kislovodsk | (11h 01m 21.29s , +60d 07m 40.3s) | C | 60 | 17.1 | 12219 | 2025-03-13 01:14:54 | MASTER-Kislovodsk | (11h 17m 18.72s , +60d 07m 13.5s) | C | 60 | 17.1 | 12298 | 2025-03-13 01:16:13 | MASTER-Kislovodsk | (11h 08m 40.14s , +67d 44m 25.5s) | C | 60 | 17.4 | 12378 | 2025-03-13 01:17:33 | MASTER-Kislovodsk | (11h 29m 49.23s , +67d 43m 41.1s) | C | 60 | 17.4 | 12458 | 2025-03-13 01:18:53 | MASTER-Kislovodsk | (11h 23m 10.50s , +58d 14m 20.8s) | C | 60 | 16.9 | 12617 | 2025-03-13 01:21:32 | MASTER-Kislovodsk | (10h 56m 00.19s , +65d 48m 56.0s) | C | 60 | 17.1 | 12697 | 2025-03-13 01:22:52 | MASTER-Kislovodsk | (11h 15m 27.68s , +65d 48m 37.3s) | C | 60 | 17.0 | 12776 | 2025-03-13 01:24:11 | MASTER-Kislovodsk | (11h 01m 16.87s , +60d 06m 30.4s) | C | 60 | 16.5 | 12856 | 2025-03-13 01:25:31 | MASTER-Kislovodsk | (11h 17m 19.74s , +60d 08m 42.8s) | C | 60 | 16.4 | 12936 | 2025-03-13 01:26:51 | MASTER-Kislovodsk | (11h 08m 38.76s , +67d 42m 19.8s) | C | 60 | 16.9 | 13016 | 2025-03-13 01:28:11 | MASTER-Kislovodsk | (11h 29m 49.24s , +67d 44m 48.2s) | C | 60 | 17.0 | 13095 | 2025-03-13 01:29:30 | MASTER-Kislovodsk | (11h 23m 08.97s , +58d 13m 52.2s) | C | 60 | 16.4 | 13255 | 2025-03-13 01:32:10 | MASTER-Kislovodsk | (10h 55m 57.66s , +65d 48m 27.4s) | C | 60 | 16.7 | 13334 | 2025-03-13 01:33:29 | MASTER-Kislovodsk | (11h 15m 25.31s , +65d 48m 11.1s) | C | 60 | 16.8 | 13573 | 2025-03-13 01:37:28 | MASTER-Kislovodsk | (11h 08m 41.27s , +67d 43m 35.6s) | C | 60 | 16.5 | 13666 | 2025-03-13 01:39:01 | MASTER-Kislovodsk | (11h 29m 42.39s , +67d 43m 28.2s) | C | 60 | 16.4 | 13746 | 2025-03-13 01:40:21 | MASTER-Kislovodsk | (11h 23m 09.80s , +58d 14m 26.4s) | C | 60 | 16.3 | 13905 | 2025-03-13 01:43:00 | MASTER-Kislovodsk | (10h 55m 51.04s , +65d 46m 59.7s) | C | 60 | 16.7 | 14683 | 2025-03-13 01:55:58 | MASTER-Kislovodsk | (11h 08m 37.14s , +67d 40m 18.4s) | C | 60 | 15.4 | 14843 | 2025-03-13 01:58:38 | MASTER-Kislovodsk | (11h 23m 08.33s , +58d 10m 53.0s) | C | 60 | 15.7 | 15003 | 2025-03-13 02:01:18 | MASTER-Kislovodsk | (10h 45m 33.04s , +63d 52m 53.8s) | C | 60 | 16.0 | 15082 | 2025-03-13 02:02:37 | MASTER-Kislovodsk | (11h 03m 48.91s , +63d 52m 37.7s) | C | 60 | 16.1 | 15321 | 2025-03-13 02:06:36 | MASTER-Kislovodsk | (11h 08m 33.24s , +67d 41m 34.8s) | C | 60 | 16.0 | 15401 | 2025-03-13 02:07:56 | MASTER-Kislovodsk | (11h 29m 40.06s , +67d 40m 37.0s) | C | 60 | 16.6 | 15481 | 2025-03-13 02:09:16 | MASTER-Kislovodsk | (11h 23m 10.93s , +58d 12m 13.5s) | C | 60 | 15.9 | 15641 | 2025-03-13 02:11:56 | MASTER-Kislovodsk | (10h 45m 30.08s , +63d 52m 28.2s) | C | 60 | 16.4 | 15721 | 2025-03-13 02:13:16 | MASTER-Kislovodsk | (11h 03m 47.47s , +63d 52m 12.8s) | C | 60 | 16.5 | 15960 | 2025-03-13 02:17:15 | MASTER-Kislovodsk | (11h 08m 31.74s , +67d 40m 56.5s) | C | 60 | 16.9 | 16040 | 2025-03-13 02:18:35 | MASTER-Kislovodsk | (11h 29m 37.34s , +67d 40m 14.7s) | C | 60 | 17.0 | 16120 | 2025-03-13 02:19:54 | MASTER-Kislovodsk | (11h 23m 08.74s , +58d 11m 46.7s) | C | 60 | 16.3 | 16279 | 2025-03-13 02:22:34 | MASTER-Kislovodsk | (10h 45m 29.01s , +63d 52m 00.8s) | C | 60 | 16.6 | 16359 | 2025-03-13 02:23:54 | MASTER-Kislovodsk | (11h 03m 48.27s , +63d 51m 45.3s) | C | 60 | 16.6 | 16578 | 2025-03-13 02:27:53 | MASTER-Kislovodsk | (10h 37m 18.87s , +61d 57m 25.5s) | C | 20 | 15.4 | 54915 | 2025-03-13 13:06:30 | MASTER-Tunka | (11h 13m 04.28s , +62d 03m 48.5s) | C | 60 | 16.8 | 56326 | 2025-03-13 13:30:01 | MASTER-Tunka | (11h 30m 13.61s , +62d 04m 21.7s) | C | 60 | 15.6 | 56935 | 2025-03-13 13:40:10 | MASTER-Tunka | (11h 13m 06.01s , +62d 03m 59.3s) | C | 60 | 16.8 | 57869 | 2025-03-13 13:55:44 | MASTER-Tunka | (11h 30m 13.66s , +62d 04m 06.8s) | C | 60 | 16.1 | 58584 | 2025-03-13 14:07:39 | MASTER-Tunka | (11h 13m 06.60s , +62d 07m 32.6s) | C | 60 | 15.6 | 67139 | 2025-03-13 16:30:14 | MASTER-Tunka | (11h 23m 30.81s , +64d 08m 57.8s) | C | 60 | 16.9 | 67199 | 2025-03-13 16:30:14 | MASTER-Tunka | (11h 23m 30.80s , +64d 08m 57.8s) | C | 180 | 17.8 | Coadd 67232 | 2025-03-13 16:31:47 | MASTER-Tunka | (11h 41m 56.26s , +64d 07m 15.8s) | C | 60 | 16.9 | 67292 | 2025-03-13 16:31:47 | MASTER-Tunka | (11h 41m 56.26s , +64d 07m 15.9s) | C | 180 | 18.0 | Coadd 67323 | 2025-03-13 16:33:18 | MASTER-Tunka | (11h 45m 30.46s , +62d 12m 16.7s) | C | 60 | 16.8 | 67383 | 2025-03-13 16:33:18 | MASTER-Tunka | (11h 45m 30.47s , +62d 12m 16.9s) | C | 180 | 18.0 | Coadd 67440 | 2025-03-13 16:35:15 | MASTER-Tunka | (12h 02m 38.09s , +62d 13m 17.1s) | C | 60 | 17.0 | 67500 | 2025-03-13 16:35:15 | MASTER-Tunka | (12h 02m 38.08s , +62d 13m 17.9s) | C | 180 | 18.5 | Coadd 67553 | 2025-03-13 16:37:08 | MASTER-Tunka | (11h 36m 40.37s , +66d 02m 10.0s) | C | 60 | 17.1 | 67613 | 2025-03-13 16:37:08 | MASTER-Tunka | (11h 36m 40.38s , +66d 02m 09.9s) | C | 180 | 18.5 | Coadd 67665 | 2025-03-13 16:39:00 | MASTER-Tunka | (11h 56m 16.20s , +66d 00m 52.0s) | C | 60 | 17.2 | 67725 | 2025-03-13 16:39:00 | MASTER-Tunka | (11h 56m 16.23s , +66d 00m 52.4s) | C | 180 | 18.3 | Coadd 67782 | 2025-03-13 16:40:57 | MASTER-Tunka | (11h 23m 28.65s , +64d 09m 21.4s) | C | 60 | 17.3 | 67893 | 2025-03-13 16:42:48 | MASTER-Tunka | (11h 41m 54.04s , +64d 07m 42.1s) | C | 60 | 17.4 | 68004 | 2025-03-13 16:44:39 | MASTER-Tunka | (11h 45m 22.55s , +62d 12m 36.8s) | C | 60 | 17.5 | 68091 | 2025-03-13 16:46:06 | MASTER-Tunka | (12h 02m 39.44s , +62d 12m 18.6s) | C | 60 | 17.7 | 68184 | 2025-03-13 16:47:39 | MASTER-Tunka | (11h 36m 35.42s , +66d 02m 55.6s) | C | 60 | 17.9 | 68277 | 2025-03-13 16:49:12 | MASTER-Tunka | (11h 56m 16.91s , +66d 00m 31.0s) | C | 60 | 17.9 | 68369 | 2025-03-13 16:50:44 | MASTER-Tunka | (11h 23m 32.39s , +64d 09m 22.7s) | C | 60 | 17.9 | 68465 | 2025-03-13 16:52:20 | MASTER-Tunka | (11h 34m 42.64s , +60d 21m 24.6s) | C | 60 | 17.6 | 68556 | 2025-03-13 16:53:51 | MASTER-Tunka | (11h 50m 59.06s , +60d 19m 48.0s) | C | 60 | 18.0 | 68647 | 2025-03-13 16:55:22 | MASTER-Tunka | (11h 41m 44.36s , +64d 07m 14.1s) | C | 60 | 17.9 | 68738 | 2025-03-13 16:56:53 | MASTER-Tunka | (11h 45m 27.46s , +62d 13m 21.7s) | C | 60 | 17.8 | 68833 | 2025-03-13 16:58:28 | MASTER-Tunka | (12h 02m 33.87s , +62d 14m 20.7s) | C | 60 | 17.8 | 68926 | 2025-03-13 17:00:01 | MASTER-Tunka | (11h 36m 31.67s , +66d 02m 04.5s) | C | 60 | 18.0 | 69017 | 2025-03-13 17:01:32 | MASTER-Tunka | (11h 56m 17.43s , +66d 02m 48.9s) | C | 60 | 18.0 | 70072 | 2025-03-13 17:19:07 | MASTER-Kislovodsk | (11h 09m 49.40s , +58d 24m 12.1s) | C | 60 | 17.1 | 70679 | 2025-03-13 17:29:14 | MASTER-Tunka | (11h 22m 40.85s , +64d 30m 17.3s) | C | 60 | 17.9 | 70710 | 2025-03-13 17:29:45 | MASTER-Kislovodsk | (11h 09m 50.62s , +58d 24m 17.0s) | C | 60 | 17.3 | 70776 | 2025-03-13 17:30:51 | MASTER-Tunka | (11h 34m 13.58s , +64d 30m 21.5s) | C | 60 | 18.0 | 70870 | 2025-03-13 17:32:25 | MASTER-Tunka | (11h 50m 20.20s , +64d 30m 23.1s) | C | 60 | 17.9 | 71349 | 2025-03-13 17:40:24 | MASTER-Kislovodsk | (11h 09m 49.41s , +58d 24m 59.2s) | C | 60 | 17.0 | 71358 | 2025-03-13 17:40:33 | MASTER-Tunka | (11h 40m 57.79s , +64d 31m 05.9s) | C | 60 | 17.8 | 71626 | 2025-03-13 17:45:01 | MASTER-Tunka | (11h 44m 44.12s , +64d 03m 00.4s) | C | 60 | 17.8 | 71686 | 2025-03-13 17:45:01 | MASTER-Tunka | (11h 44m 44.12s , +64d 03m 00.4s) | C | 180 | 18.4 | Coadd 71720 | 2025-03-13 17:46:35 | MASTER-Tunka | (12h 01m 50.06s , +64d 02m 59.3s) | C | 60 | 17.6 | 71780 | 2025-03-13 17:46:35 | MASTER-Tunka | (12h 01m 50.05s , +64d 02m 59.3s) | C | 180 | 18.2 | Coadd 71813 | 2025-03-13 17:48:08 | MASTER-Tunka | (11h 35m 35.45s , +66d 07m 01.1s) | C | 60 | 17.6 | 71873 | 2025-03-13 17:48:08 | MASTER-Tunka | (11h 35m 35.44s , +66d 07m 01.1s) | C | 180 | 18.4 | Coadd 71904 | 2025-03-13 17:49:39 | MASTER-Tunka | (11h 55m 25.12s , +66d 05m 18.9s) | C | 60 | 17.6 | 71964 | 2025-03-13 17:49:39 | MASTER-Tunka | (11h 55m 25.12s , +66d 05m 18.9s) | C | 180 | 18.4 | Coadd 71988 | 2025-03-13 17:51:03 | MASTER-Kislovodsk | (11h 09m 46.43s , +58d 25m 07.6s) | C | 60 | 17.0 | 72000 | 2025-03-13 17:51:15 | MASTER-Tunka | (11h 22m 32.52s , +64d 44m 34.5s) | C | 60 | 17.5 | 72094 | 2025-03-13 17:52:49 | MASTER-Tunka | (11h 34m 07.53s , +64d 44m 35.1s) | C | 60 | 17.7 | 72188 | 2025-03-13 17:54:23 | MASTER-Tunka | (11h 50m 17.70s , +64d 44m 36.2s) | C | 60 | 17.7 | 72481 | 2025-03-13 17:59:16 | MASTER-Tunka | (11h 40m 56.03s , +64d 12m 12.5s) | C | 60 | 17.5 | 72576 | 2025-03-13 18:00:51 | MASTER-Tunka | (11h 44m 32.62s , +64d 11m 42.0s) | C | 60 | 17.7 | 72675 | 2025-03-13 18:02:30 | MASTER-Tunka | (12h 01m 51.70s , +64d 11m 46.0s) | C | 60 | 17.6 | 72769 | 2025-03-13 18:04:04 | MASTER-Tunka | (11h 35m 32.49s , +66d 07m 29.4s) | C | 60 | 17.7 | 72829 | 2025-03-13 18:05:03 | MASTER-Kislovodsk | (11h 09m 36.41s , +58d 23m 37.3s) | C | 60 | 17.1 | 72861 | 2025-03-13 18:05:35 | MASTER-Tunka | (11h 55m 16.78s , +66d 05m 02.5s) | C | 60 | 17.7 | 72956 | 2025-03-13 18:07:11 | MASTER-Tunka | (11h 22m 31.45s , +64d 24m 58.1s) | C | 60 | 17.2 | 73053 | 2025-03-13 18:08:48 | MASTER-Tunka | (11h 33m 55.00s , +64d 24m 32.8s) | C | 60 | 17.5 | 73144 | 2025-03-13 18:10:19 | MASTER-Tunka | (11h 50m 08.98s , +64d 24m 37.3s) | C | 60 | 17.7 | 73360 | 2025-03-13 18:13:55 | MASTER-Tunka | (11h 40m 44.49s , +64d 11m 46.7s) | C | 60 | 17.8 | 73453 | 2025-03-13 18:15:28 | MASTER-Tunka | (11h 44m 32.48s , +64d 11m 30.7s) | C | 60 | 17.8 | 73466 | 2025-03-13 18:15:41 | MASTER-Kislovodsk | (11h 09m 34.35s , +58d 24m 12.7s) | C | 60 | 17.2 | 73552 | 2025-03-13 18:17:07 | MASTER-Tunka | (12h 01m 43.80s , +64d 11m 38.5s) | C | 60 | 17.6 | 73644 | 2025-03-13 18:18:39 | MASTER-Tunka | (11h 35m 26.90s , +66d 06m 18.8s) | C | 60 | 17.8 | 73735 | 2025-03-13 18:20:10 | MASTER-Tunka | (11h 55m 14.56s , +66d 07m 19.6s) | C | 60 | 17.6 | 73830 | 2025-03-13 18:21:45 | MASTER-Tunka | (11h 33m 50.97s , +64d 40m 33.3s) | C | 60 | 17.5 | 73924 | 2025-03-13 18:23:19 | MASTER-Tunka | (11h 50m 04.51s , +64d 40m 16.1s) | C | 60 | 17.7 | 74145 | 2025-03-13 18:27:00 | MASTER-Tunka | (11h 57m 20.19s , +64d 11m 42.8s) | C | 60 | 17.7 | 74205 | 2025-03-13 18:27:00 | MASTER-Tunka | (11h 57m 20.20s , +64d 11m 42.7s) | C | 180 | 18.6 | Coadd 74458 | 2025-03-13 18:32:13 | MASTER-Tunka | (11h 33m 48.06s , +60d 26m 22.0s) | C | 60 | 17.5 | 74550 | 2025-03-13 18:33:45 | MASTER-Tunka | (11h 49m 52.35s , +60d 25m 08.6s) | C | 60 | 17.9 | 74773 | 2025-03-13 18:37:28 | MASTER-Tunka | (11h 57m 15.21s , +64d 13m 04.6s) | C | 60 | 17.9 | 75446 | 2025-03-13 18:48:41 | MASTER-Tunka | (11h 57m 03.64s , +64d 12m 29.1s) | C | 60 | 17.9 | 76090 | 2025-03-13 18:59:25 | MASTER-Tunka | (11h 57m 05.96s , +64d 13m 05.0s) | C | 60 | 18.0 | 76150 | 2025-03-13 18:59:25 | MASTER-Tunka | (11h 57m 05.95s , +64d 13m 05.0s) | C | 180 | 18.6 | Coadd 76811 | 2025-03-13 19:11:25 | MASTER-Tunka | (11h 57m 01.71s , +64d 13m 37.2s) | C | 60 | 17.9 | 77531 | 2025-03-13 19:23:26 | MASTER-Tunka | (11h 56m 55.74s , +64d 13m 55.8s) | C | 60 | 17.9 | 86298 | 2025-03-13 21:49:33 | MASTER-Kislovodsk | (10h 47m 21.99s , +60d 12m 23.6s) | C | 60 | 16.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 12228 TYPE = 35 DAYS = 0 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 GRB250312.91 (trigger No 763509110,11h 20m 38.40s , +63d 14m 24.0s, R=3.19) errorbox 38 sec after notice time and 61 sec after trigger time at 2025-03-12 21:52:47 UT, with upper limit up to 17.3 mag. The observations began at zenith distance = 21 deg. The sun altitude is -49.4 deg. The galactic latitude b = 51 deg., longitude l = 139 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2810236 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 67 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.68s , +63d 26m 27.5s) | C | 10 | 16.0 | 82 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.60s , +63d 26m 28.4s) | C | 40 | 17.1 | Coadd 96 | 2025-03-12 21:53:16 | MASTER-Kislovodsk | (11h 35m 54.54s , +63d 26m 29.5s) | C | 10 | 16.0 | 132 | 2025-03-12 21:53:47 | MASTER-Kislovodsk | (11h 35m 54.37s , +63d 26m 30.6s) | C | 20 | 16.8 | 177 | 2025-03-12 21:54:27 | MASTER-Kislovodsk | (11h 20m 23.59s , +63d 23m 11.2s) | C | 30 | 17.1 | 232 | 2025-03-12 21:55:17 | MASTER-Kislovodsk | (11h 20m 23.31s , +63d 23m 12.5s) | C | 40 | 17.3 | 297 | 2025-03-12 21:56:17 | MASTER-Kislovodsk | (11h 20m 22.85s , +63d 23m 13.8s) | C | 50 | 17.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 12227 TYPE = 35 DAYS = 0 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 GRB250312.91 (trigger No 763509110,11h 20m 38.40s , +63d 14m 24.0s, R=3.19) errorbox 38 sec after notice time and 61 sec after trigger time at 2025-03-12 21:52:47 UT, with upper limit up to 17.3 mag. The observations began at zenith distance = 21 deg. The sun altitude is -49.4 deg. The galactic latitude b = 51 deg., longitude l = 139 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2810236 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 67 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.68s , +63d 26m 27.5s) | C | 10 | 16.0 | 82 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.60s , +63d 26m 28.4s) | C | 40 | 17.1 | Coadd 96 | 2025-03-12 21:53:16 | MASTER-Kislovodsk | (11h 35m 54.54s , +63d 26m 29.5s) | C | 10 | 16.0 | 132 | 2025-03-12 21:53:47 | MASTER-Kislovodsk | (11h 35m 54.37s , +63d 26m 30.6s) | C | 20 | 16.8 | 177 | 2025-03-12 21:54:27 | MASTER-Kislovodsk | (11h 20m 23.59s , +63d 23m 11.2s) | C | 30 | 17.1 | 232 | 2025-03-12 21:55:17 | MASTER-Kislovodsk | (11h 20m 23.31s , +63d 23m 12.5s) | C | 40 | 17.3 | 297 | 2025-03-12 21:56:17 | MASTER-Kislovodsk | (11h 20m 22.85s , +63d 23m 13.8s) | C | 50 | 17.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 12226 TYPE = 34 DAYS = 0 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 GRB250312.91 (trigger No 763509110,11h 20m 38.40s , +63d 14m 24.0s, R=3.19) errorbox 38 sec after notice time and 61 sec after trigger time at 2025-03-12 21:52:47 UT, with upper limit up to 17.3 mag. The observations began at zenith distance = 21 deg. The sun altitude is -49.4 deg. The galactic latitude b = 51 deg., longitude l = 139 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2810236 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 67 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.68s , +63d 26m 27.5s) | C | 10 | 16.0 | 82 | 2025-03-12 21:52:47 | MASTER-Kislovodsk | (11h 35m 54.60s , +63d 26m 28.4s) | C | 40 | 17.1 | Coadd 96 | 2025-03-12 21:53:16 | MASTER-Kislovodsk | (11h 35m 54.54s , +63d 26m 29.5s) | C | 10 | 16.0 | 132 | 2025-03-12 21:53:47 | MASTER-Kislovodsk | (11h 35m 54.37s , +63d 26m 30.6s) | C | 20 | 16.8 | 177 | 2025-03-12 21:54:27 | MASTER-Kislovodsk | (11h 20m 23.59s , +63d 23m 11.2s) | C | 30 | 17.1 | 232 | 2025-03-12 21:55:17 | MASTER-Kislovodsk | (11h 20m 23.31s , +63d 23m 12.5s) | C | 40 | 17.3 | 297 | 2025-03-12 21:56:17 | MASTER-Kislovodsk | (11h 20m 22.85s , +63d 23m 13.8s) | C | 50 | 17.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. 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