MASTER Net MASTER Database: GRB250404.60 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 EP GRB250404.60
Trignum 1743776399
Trigger time 2025-04-04 14:19:45
Notice time 2025-04-06 09:48:52.417744
Coord, eb (08h 20m 14.42s , -35d 31m 42.2s) , 0.01
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
2834718 2025-04-06 09:48:52.417744 08h 20m 14.42s -35d 31m 42.2s EP 0.01 alert 1743776399 0 1115 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

2025-04-04 14:19:45 (JD 2460770.097049)

Siderial time 5.713945 h

Ra 08:20:14.42 Dec -35:31:42.20
(125.060083d, -35.528389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -6.71 Azimuth: 39.23

Sun: Altitude: -31.77 Azimuth: 158.83

Moon: Altitude: 30.10 Azimuth: 99.21

Tunka

Object: Altitude: -0.28 Azimuth: 20.98

Sun: Altitude: -22.02 Azimuth: 133.66

Moon: Altitude: 45.35 Azimuth: 78.76

Kislovodsk

Object: Altitude: 4.76 Azimuth: 332.49

Sun: Altitude: 13.34 Azimuth: 85.23

Moon: Altitude: 72.97 Azimuth: 331.94

Tavrida

Object: Altitude: 0.81 Azimuth: 326.32

Sun: Altitude: 19.24 Azimuth: 78.76

Moon: Altitude: 68.48 Azimuth: 313.77

SAAO

Object: Altitude: 43.94 Azimuth: 290.15

Sun: Altitude: 25.06 Azimuth: 115.38

Moon: Altitude: 22.65 Azimuth: 209.16

IAC

Object: Altitude: -18.60 Azimuth: 301.01

Sun: Altitude: 61.74 Azimuth: 40.59

Moon: Altitude: 30.98 Azimuth: 252.23

Argentina

Object: Altitude: -15.61 Azimuth: 332.04

Sun: Altitude: 39.88 Azimuth: 227.69

Moon: Altitude: -39.32 Azimuth: 257.67

Mexico

Object: Altitude: -82.40 Azimuth: 51.96

Sun: Altitude: 15.11 Azimuth: 272.31

Moon: Altitude: -28.18 Azimuth: 198.06

Ural

Object: Altitude: -3.73 Azimuth: 345.86

Sun: Altitude: 2.65 Azimuth: 96.58

Moon: Altitude: 60.73 Azimuth: 14.54

Vostryakovo

Object: Altitude: -6.88 Azimuth: 328.83

Sun: Altitude: 14.74 Azimuth: 78.62

Moon: Altitude: 61.19 Azimuth: 334.32

Gal. latitude: 0.726724 Gal. longitude: 254.388603

Dist. to Sun: 110.833548

Dist. to Moon: 68.206058

Moon coord.: (99.619452 d, 28.320495 d)

Sun coord.: (13.546434 d, 5.800882 d)

Lunar disk: 0.447315

Lunar phase: 96.048521

Lunar bright limb: 273.268671

No SN in this field

2025-04-06 09:48:52 (JD 2460771.908935)

Siderial time 1.318282 h

Ra 08:20:14.42 Dec -35:31:42.20
(125.060083d, -35.528389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 3.08 Azimuth: 347.48

Sun: Altitude: 2.17 Azimuth: 97.55

Moon: Altitude: 60.65 Azimuth: 328.70

Tunka

Object: Altitude: -4.03 Azimuth: 328.49

Sun: Altitude: 17.38 Azimuth: 78.09

Moon: Altitude: 48.31 Azimuth: 296.51

Kislovodsk

Object: Altitude: -30.51 Azimuth: 291.69

Sun: Altitude: 51.82 Azimuth: 15.35

Moon: Altitude: 8.71 Azimuth: 245.28

Tavrida

Object: Altitude: -36.59 Azimuth: 286.46

Sun: Altitude: 51.75 Azimuth: 1.56

Moon: Altitude: 3.76 Azimuth: 239.74

SAAO

Object: Altitude: -3.09 Azimuth: 316.33

Sun: Altitude: 49.42 Azimuth: 198.89

Moon: Altitude: -39.42 Azimuth: 264.43

IAC

Object: Altitude: -71.14 Azimuth: 297.74

Sun: Altitude: 38.40 Azimuth: 285.24

Moon: Altitude: -34.51 Azimuth: 202.15

Argentina

Object: Altitude: -16.19 Azimuth: 26.87

Sun: Altitude: -13.92 Azimuth: 270.95

Moon: Altitude: -59.88 Azimuth: 82.93

Mexico

Object: Altitude: -30.02 Azimuth: 64.18

Sun: Altitude: -38.71 Azimuth: 229.34

Moon: Altitude: -0.44 Azimuth: 118.39

Ural

Object: Altitude: -25.87 Azimuth: 296.05

Sun: Altitude: 35.36 Azimuth: 32.92

Moon: Altitude: 22.93 Azimuth: 261.22

Vostryakovo

Object: Altitude: -36.77 Azimuth: 281.21

Sun: Altitude: 40.96 Azimuth: 6.27

Moon: Altitude: 10.96 Azimuth: 243.72

Gal. latitude: 0.726724 Gal. longitude: 254.388603

Dist. to Sun: 109.898028

Dist. to Moon: 59.321468

Moon coord.: (125.799719 d, 23.788945 d)

Sun coord.: (15.201942 d, 6.488458 d)

Lunar disk: 0.638353

Lunar phase: 73.936308

Lunar bright limb: 284.725077

No SN in this field

2025-04-06 10:48:52 (JD 2460771.950602)

Siderial time 2.321019 h

Ra 08:20:14.42 Dec -35:31:42.20
(125.060083d, -35.528389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 4.15 Azimuth: 359.69

Sun: Altitude: -7.12 Azimuth: 109.23

Moon: Altitude: 63.28 Azimuth: 356.57

Tunka

Object: Altitude: 0.00 Azimuth: 340.04

Sun: Altitude: 8.18 Azimuth: 90.13

Moon: Altitude: 55.46 Azimuth: 314.70

Kislovodsk

Object: Altitude: -20.73 Azimuth: 299.85

Sun: Altitude: 47.02 Azimuth: 37.15

Moon: Altitude: 18.42 Azimuth: 254.57

Tavrida

Object: Altitude: -26.60 Azimuth: 294.75

Sun: Altitude: 49.32 Azimuth: 24.80

Moon: Altitude: 12.93 Azimuth: 249.42

SAAO

Object: Altitude: 6.30 Azimuth: 308.48

Sun: Altitude: 51.03 Azimuth: 175.63

Moon: Altitude: -27.28 Azimuth: 258.05

IAC

Object: Altitude: -59.09 Azimuth: 292.67

Sun: Altitude: 50.73 Azimuth: 297.09

Moon: Altitude: -28.43 Azimuth: 215.98

Argentina

Object: Altitude: -20.76 Azimuth: 14.91

Sun: Altitude: -1.20 Azimuth: 263.09

Moon: Altitude: -71.74 Azimuth: 68.04

Mexico

Object: Altitude: -41.81 Azimuth: 68.19

Sun: Altitude: -28.07 Azimuth: 241.90

Moon: Altitude: -11.01 Azimuth: 126.43

Ural

Object: Altitude: -18.90 Azimuth: 306.93

Sun: Altitude: 30.00 Azimuth: 49.48

Moon: Altitude: 30.66 Azimuth: 273.30

Vostryakovo

Object: Altitude: -28.60 Azimuth: 292.04

Sun: Altitude: 38.64 Azimuth: 25.48

Moon: Altitude: 18.52 Azimuth: 254.99

Gal. latitude: 0.726724 Gal. longitude: 254.388603

Dist. to Sun: 109.876356

Dist. to Moon: 59.176342

Moon coord.: (126.360932 d, 23.635132 d)

Sun coord.: (15.240039 d, 6.504199 d)

Lunar disk: 0.642498

Lunar phase: 73.441409

Lunar bright limb: 284.942477

No SN in this field

2025-04-19 16:52:18 (JD 2460785.202986)

Siderial time 9.249054 h

Ra 08:20:14.42 Dec -35:31:42.20
(125.060083d, -35.528389d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: -34.67 Azimuth: 74.17

Sun: Altitude: -25.66 Azimuth: 203.10

Moon: Altitude: -2.66 Azimuth: 312.31

Tunka

Object: Altitude: -21.21 Azimuth: 59.01

Sun: Altitude: -26.82 Azimuth: 176.40

Moon: Altitude: -16.24 Azimuth: 294.41

Kislovodsk

Object: Altitude: 8.94 Azimuth: 15.22

Sun: Altitude: -10.19 Azimuth: 116.61

Moon: Altitude: -55.31 Azimuth: 255.43

Tavrida

Object: Altitude: 9.22 Azimuth: 8.29

Sun: Altitude: -4.22 Azimuth: 110.48

Moon: Altitude: -60.71 Azimuth: 244.68

SAAO

Object: Altitude: 85.92 Azimuth: 321.34

Sun: Altitude: -9.76 Azimuth: 97.27

Moon: Altitude: -27.82 Azimuth: 343.21

IAC

Object: Altitude: 15.65 Azimuth: 326.75

Sun: Altitude: 34.15 Azimuth: 84.49

Moon: Altitude: -71.87 Azimuth: 86.95

Argentina

Object: Altitude: 15.47 Azimuth: 302.54

Sun: Altitude: 46.69 Azimuth: 173.80

Moon: Altitude: 1.71 Azimuth: 58.06

Mexico

Object: Altitude: -51.90 Azimuth: 289.35

Sun: Altitude: 50.76 Azimuth: 292.04

Moon: Altitude: 4.23 Azimuth: 53.92

Ural

Object: Altitude: -7.33 Azimuth: 28.53

Sun: Altitude: -11.58 Azimuth: 133.14

Moon: Altitude: -41.53 Azimuth: 257.06

Vostryakovo

Object: Altitude: -1.68 Azimuth: 11.25

Sun: Altitude: -2.44 Azimuth: 114.02

Moon: Altitude: -53.21 Azimuth: 235.25

Gal. latitude: 0.726724 Gal. longitude: 254.388603

Dist. to Sun: 102.681489

Dist. to Moon: 114.026114

Moon coord.: (285.159782 d, -27.716795 d)

Sun coord.: (27.458089 d, 11.309456 d)

Lunar disk: 0.639218

Lunar phase: 73.833111

Lunar bright limb: 85.422480

No SN in this field
Recent coverage and limits telegrams

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

  ID = 12368
TYPE = 35
DAYS = 1


MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the EP250404a ( EP Team et al., GCN 40051) errorbox  13675 sec after notice time and 16626 sec after trigger time at 2025-04-04 18:57:05 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 66 deg. The sun  altitude  is -28.6 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) was pointed to the EP250404a errorbox  28956 sec after notice time and 31907 sec after trigger time at 2025-04-04 23:11:46 UT, with upper limit up to  19.9 mag. Observations started at twilight.  The observations began at zenith distance = 67 deg. The sun  altitude  is -10.4 deg. 

The galactic latitude b = 33 deg., longitude l = 187 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2832935

We obtain a following upper limits.  

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

   16657 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |    60 | 18.6 |        
   16717 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |   180 | 19.3 |  Coadd 
   16728 | 2025-04-04 18:58:16 |        MASTER-Tunka | (08h 19m 58.07s , +36d 00m 34.7s) |   C |    60 | 18.6 |        
   16800 | 2025-04-04 18:59:28 |        MASTER-Tunka | (08h 19m 55.11s , +36d 02m 04.0s) |   C |    60 | 18.6 |        
   16872 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |    60 | 18.7 |        
   16932 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |   180 | 19.4 |  Coadd 
   16950 | 2025-04-04 19:01:58 |        MASTER-Tunka | (08h 19m 57.66s , +36d 02m 04.7s) |   C |    60 | 18.6 |        
   17021 | 2025-04-04 19:03:09 |        MASTER-Tunka | (08h 19m 52.37s , +36d 01m 15.7s) |   C |    60 | 18.7 |        
   17095 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.7s) |   C |    60 | 18.7 |        
   17155 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.8s) |   C |   180 | 19.5 |  Coadd 
   17381 | 2025-04-04 19:09:09 |        MASTER-Tunka | (08h 19m 52.28s , +35d 59m 59.8s) |   C |    60 | 18.7 |        
   17454 | 2025-04-04 19:10:22 |        MASTER-Tunka | (08h 19m 58.20s , +36d 00m 10.2s) |   C |    60 | 18.7 |        
   17527 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.3s) |   C |    60 | 18.7 |        
   17587 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.2s) |   C |   180 | 19.4 |  Coadd 
   17599 | 2025-04-04 19:12:48 |        MASTER-Tunka | (08h 19m 54.27s , +35d 59m 56.4s) |   C |    60 | 18.6 |        
   17670 | 2025-04-04 19:13:59 |        MASTER-Tunka | (08h 19m 57.20s , +36d 01m 34.1s) |   C |    60 | 18.6 |        
   17743 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |    60 | 18.5 |        
   17803 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |   180 | 19.3 |  Coadd 
   17816 | 2025-04-04 19:16:24 |        MASTER-Tunka | (08h 19m 51.76s , +36d 01m 37.4s) |   C |    60 | 18.6 |        
   17890 | 2025-04-04 19:17:39 |        MASTER-Tunka | (08h 19m 57.64s , +36d 00m 34.5s) |   C |    60 | 18.7 |        
   17962 | 2025-04-04 19:18:51 |        MASTER-Tunka | (08h 19m 51.82s , +35d 59m 30.3s) |   C |    60 | 18.6 |        
   18022 | 2025-04-04 19:18:51 |        MASTER-Tunka | (08h 19m 51.82s , +35d 59m 30.3s) |   C |   180 | 19.4 |  Coadd 
   18035 | 2025-04-04 19:20:04 |        MASTER-Tunka | (08h 19m 57.26s , +35d 59m 42.1s) |   C |    60 | 18.6 |        
   18108 | 2025-04-04 19:21:16 |        MASTER-Tunka | (08h 19m 53.77s , +36d 01m 07.0s) |   C |    60 | 18.5 |        
   18180 | 2025-04-04 19:22:28 |        MASTER-Tunka | (08h 19m 53.78s , +35d 59m 24.2s) |   C |    60 | 18.6 |        
   18240 | 2025-04-04 19:22:28 |        MASTER-Tunka | (08h 19m 53.78s , +35d 59m 24.1s) |   C |   180 | 19.4 |  Coadd 
   18250 | 2025-04-04 19:23:39 |        MASTER-Tunka | (08h 19m 57.55s , +36d 00m 59.3s) |   C |    60 | 18.7 |        
   18325 | 2025-04-04 19:24:53 |        MASTER-Tunka | (08h 19m 50.49s , +36d 00m 11.6s) |   C |    60 | 18.6 |        
   31912 | 2025-04-04 23:11:46 |         MASTER-OAFA | (08h 19m 21.81s , +35d 21m 51.8s) |   C |    10 | 16.5 |        
   31954 | 2025-04-04 23:12:28 |         MASTER-OAFA | (08h 19m 17.72s , +35d 23m 08.7s) |   C |    10 | 16.6 |        
   31993 | 2025-04-04 23:13:06 |         MASTER-OAFA | (08h 19m 17.32s , +35d 21m 15.2s) |   C |    10 | 16.7 |        
   32032 | 2025-04-04 23:13:45 |         MASTER-OAFA | (08h 19m 19.90s , +35d 22m 45.2s) |   C |    10 | 16.8 |        
   32074 | 2025-04-04 23:14:27 |         MASTER-OAFA | (08h 19m 12.52s , +35d 22m 04.1s) |   C |    10 | 16.8 |        
   32114 | 2025-04-04 23:15:08 |         MASTER-OAFA | (08h 19m 13.83s , +35d 22m 59.5s) |   C |    10 | 16.8 |        
   32152 | 2025-04-04 23:15:46 |         MASTER-OAFA | (08h 19m 19.15s , +35d 21m 56.2s) |   C |    10 | 17.0 |        
   32191 | 2025-04-04 23:16:25 |         MASTER-OAFA | (08h 19m 12.12s , +35d 20m 50.5s) |   C |    10 | 16.9 |        
   32229 | 2025-04-04 23:17:02 |         MASTER-OAFA | (08h 19m 17.91s , +35d 21m 16.7s) |   C |    10 | 17.0 |        
   32267 | 2025-04-04 23:17:41 |         MASTER-OAFA | (08h 19m 14.23s , +35d 22m 33.8s) |   C |    10 | 17.0 |        
   32306 | 2025-04-04 23:18:19 |         MASTER-OAFA | (08h 19m 13.81s , +35d 20m 58.4s) |   C |    10 | 17.1 |        
   32344 | 2025-04-04 23:18:57 |         MASTER-OAFA | (08h 19m 16.67s , +35d 22m 12.7s) |   C |    10 | 17.2 |        
   33137 | 2025-04-04 23:32:01 |         MASTER-OAFA | (08h 19m 01.71s , +35d 21m 07.7s) |   C |    30 | 18.4 |        
   33184 | 2025-04-04 23:32:47 |         MASTER-OAFA | (08h 19m 01.06s , +35d 22m 10.1s) |   C |    30 | 18.4 |        
   33232 | 2025-04-04 23:33:36 |         MASTER-OAFA | (08h 19m 05.95s , +35d 21m 12.1s) |   C |    30 | 18.5 |        
   33277 | 2025-04-04 23:34:21 |         MASTER-OAFA | (08h 18m 58.65s , +35d 20m 14.0s) |   C |    30 | 18.4 |        
   33325 | 2025-04-04 23:35:09 |         MASTER-OAFA | (08h 19m 04.81s , +35d 20m 45.1s) |   C |    30 | 18.6 |        
   33371 | 2025-04-04 23:35:54 |         MASTER-OAFA | (08h 19m 00.96s , +35d 22m 07.7s) |   C |    30 | 18.5 |        
   33421 | 2025-04-04 23:36:45 |         MASTER-OAFA | (08h 19m 00.34s , +35d 20m 33.9s) |   C |    30 | 18.5 |        
   33451 | 2025-04-04 23:36:45 |         MASTER-OAFA | (08h 19m 00.33s , +35d 20m 33.8s) |   C |    90 | 19.3 |  Coadd 
   33468 | 2025-04-04 23:37:32 |         MASTER-OAFA | (08h 19m 03.70s , +35d 21m 55.5s) |   C |    30 | 18.5 |        
   33517 | 2025-04-04 23:38:20 |         MASTER-OAFA | (08h 18m 56.76s , +35d 21m 23.8s) |   C |    30 | 18.5 |        
   33563 | 2025-04-04 23:39:07 |         MASTER-OAFA | (08h 18m 55.71s , +35d 22m 25.5s) |   C |    30 | 18.5 |        
   33593 | 2025-04-04 23:39:07 |         MASTER-OAFA | (08h 18m 55.72s , +35d 22m 25.5s) |   C |    90 | 19.3 |  Coadd 
   33611 | 2025-04-04 23:39:54 |         MASTER-OAFA | (08h 19m 01.35s , +35d 21m 27.0s) |   C |    30 | 18.5 |        
   33656 | 2025-04-04 23:40:40 |         MASTER-OAFA | (08h 18m 53.65s , +35d 20m 28.1s) |   C |    30 | 18.4 |        
   33718 | 2025-04-04 23:41:27 |         MASTER-OAFA | (08h 18m 59.04s , +35d 20m 38.8s) |   C |    60 | 18.4 |        
   33796 | 2025-04-04 23:42:45 |         MASTER-OAFA | (08h 18m 55.24s , +35d 22m 22.0s) |   C |    60 | 18.6 |        
   33872 | 2025-04-04 23:44:00 |         MASTER-OAFA | (08h 18m 54.29s , +35d 20m 36.9s) |   C |    60 | 18.6 |        
   33948 | 2025-04-04 23:45:16 |         MASTER-OAFA | (08h 18m 55.38s , +35d 22m 10.2s) |   C |    60 | 18.6 |        
   34026 | 2025-04-04 23:46:35 |         MASTER-OAFA | (08h 18m 48.79s , +35d 21m 37.5s) |   C |    60 | 18.6 |        
   34103 | 2025-04-04 23:47:51 |         MASTER-OAFA | (08h 18m 47.13s , +35d 22m 39.2s) |   C |    60 | 18.6 |        
   34180 | 2025-04-04 23:49:09 |         MASTER-OAFA | (08h 18m 53.60s , +35d 21m 41.4s) |   C |    60 | 18.6 |        
   34256 | 2025-04-04 23:50:24 |         MASTER-OAFA | (08h 18m 46.23s , +35d 20m 43.3s) |   C |    60 | 18.9 |        
   34332 | 2025-04-04 23:51:40 |         MASTER-OAFA | (08h 18m 52.40s , +35d 21m 04.5s) |   C |    60 | 19.0 |        
   34410 | 2025-04-04 23:52:58 |         MASTER-OAFA | (08h 18m 48.68s , +35d 22m 19.3s) |   C |    60 | 19.0 |        
   34488 | 2025-04-04 23:54:16 |         MASTER-OAFA | (08h 18m 48.48s , +35d 20m 51.3s) |   C |    60 | 19.0 |        
   34566 | 2025-04-04 23:55:34 |         MASTER-OAFA | (08h 18m 50.62s , +35d 22m 23.7s) |   C |    60 | 19.0 |        
   34681 | 2025-04-04 23:57:00 |         MASTER-OAFA | (08h 18m 44.27s , +35d 21m 54.2s) |   C |   120 | 19.3 |        
   34821 | 2025-04-04 23:59:19 |         MASTER-OAFA | (08h 18m 44.29s , +35d 22m 57.6s) |   C |   120 | 19.3 |        
   34968 | 2025-04-05 00:01:46 |         MASTER-OAFA | (08h 18m 50.01s , +35d 22m 01.1s) |   C |   120 | 19.3 |        
   35093 | 2025-04-05 00:04:06 |         MASTER-OAFA | (08h 18m 44.44s , +35d 21m 04.0s) |   C |    90 | 19.1 |        
   35199 | 2025-04-05 00:05:53 |         MASTER-OAFA | (08h 18m 48.74s , +35d 21m 26.6s) |   C |    90 | 19.1 |        
   35274 | 2025-04-05 00:05:53 |         MASTER-OAFA | (08h 18m 48.74s , +35d 21m 26.5s) |   C |   240 | 19.5 |  Coadd 
   35306 | 2025-04-05 00:07:39 |         MASTER-OAFA | (08h 18m 46.22s , +35d 22m 44.9s) |   C |    90 | 19.1 |        
   35396 | 2025-04-05 00:09:24 |         MASTER-OAFA | (08h 18m 45.99s , +35d 21m 27.0s) |   C |    60 | 19.0 |        
   35472 | 2025-04-05 00:10:40 |         MASTER-OAFA | (08h 18m 48.47s , +35d 23m 09.8s) |   C |    60 | 19.0 |        
   35546 | 2025-04-05 00:11:55 |         MASTER-OAFA | (08h 18m 42.35s , +35d 22m 14.7s) |   C |    60 | 19.0 |        
   35621 | 2025-04-05 00:13:10 |         MASTER-OAFA | (08h 18m 42.98s , +35d 23m 16.2s) |   C |    60 | 19.0 |        
   35699 | 2025-04-05 00:14:28 |         MASTER-OAFA | (08h 18m 47.22s , +35d 22m 18.1s) |   C |    60 | 19.0 |        
   35777 | 2025-04-05 00:15:46 |         MASTER-OAFA | (08h 18m 41.64s , +35d 21m 19.3s) |   C |    60 | 19.0 |        
   35851 | 2025-04-05 00:16:59 |         MASTER-OAFA | (08h 18m 46.76s , +35d 21m 33.1s) |   C |    60 | 19.0 |        
   35927 | 2025-04-05 00:18:16 |         MASTER-OAFA | (08h 18m 44.49s , +35d 23m 20.4s) |   C |    60 | 19.0 |        
   36004 | 2025-04-05 00:19:32 |         MASTER-OAFA | (08h 18m 44.30s , +35d 21m 54.3s) |   C |    60 | 19.0 |        
   36080 | 2025-04-05 00:20:48 |         MASTER-OAFA | (08h 18m 48.09s , +35d 23m 07.3s) |   C |    60 | 19.0 |        
   36158 | 2025-04-05 00:22:06 |         MASTER-OAFA | (08h 18m 40.83s , +35d 22m 27.0s) |   C |    60 | 19.0 |        
   36234 | 2025-04-05 00:23:23 |         MASTER-OAFA | (08h 18m 39.66s , +35d 23m 28.6s) |   C |    60 | 19.0 |        
   36309 | 2025-04-05 00:24:37 |         MASTER-OAFA | (08h 18m 45.54s , +35d 22m 30.1s) |   C |    60 | 19.0 |        
   36386 | 2025-04-05 00:25:55 |         MASTER-OAFA | (08h 18m 39.98s , +35d 21m 31.3s) |   C |    60 | 19.1 |        
   36461 | 2025-04-05 00:27:10 |         MASTER-OAFA | (08h 18m 46.07s , +35d 22m 01.3s) |   C |    60 | 19.0 |        
   36538 | 2025-04-05 00:28:27 |         MASTER-OAFA | (08h 18m 42.79s , +35d 23m 25.0s) |   C |    60 | 19.0 |        
   36615 | 2025-04-05 00:29:44 |         MASTER-OAFA | (08h 18m 42.60s , +35d 21m 44.3s) |   C |    60 | 19.0 |        
   36691 | 2025-04-05 00:30:59 |         MASTER-OAFA | (08h 18m 45.64s , +35d 23m 09.4s) |   C |    60 | 19.0 |        
   36768 | 2025-04-05 00:32:17 |         MASTER-OAFA | (08h 18m 40.15s , +35d 22m 36.7s) |   C |    60 | 19.0 |        
   36848 | 2025-04-05 00:33:37 |         MASTER-OAFA | (08h 18m 39.07s , +35d 23m 37.9s) |   C |    60 | 19.0 |        
   36908 | 2025-04-05 00:33:37 |         MASTER-OAFA | (08h 18m 39.06s , +35d 23m 37.9s) |   C |   180 | 19.4 |  Coadd 
   36924 | 2025-04-05 00:34:52 |         MASTER-OAFA | (08h 18m 44.63s , +35d 22m 39.2s) |   C |    60 | 19.0 |        
   36998 | 2025-04-05 00:36:07 |         MASTER-OAFA | (08h 18m 37.89s , +35d 21m 39.8s) |   C |    60 | 18.9 |        
   37074 | 2025-04-05 00:37:22 |         MASTER-OAFA | (08h 18m 44.74s , +35d 21m 51.5s) |   C |    60 | 19.0 |        
   37153 | 2025-04-05 00:38:41 |         MASTER-OAFA | (08h 18m 41.10s , +35d 23m 18.6s) |   C |    60 | 19.0 |        
   37230 | 2025-04-05 00:39:58 |         MASTER-OAFA | (08h 18m 40.90s , +35d 22m 01.9s) |   C |    60 | 18.9 |        
   37307 | 2025-04-05 00:41:16 |         MASTER-OAFA | (08h 18m 43.94s , +35d 23m 18.4s) |   C |    60 | 19.0 |        
   37383 | 2025-04-05 00:42:32 |         MASTER-OAFA | (08h 18m 36.52s , +35d 22m 44.4s) |   C |    60 | 18.9 |        
   37464 | 2025-04-05 00:43:52 |         MASTER-OAFA | (08h 18m 38.08s , +35d 23m 45.4s) |   C |    60 | 19.0 |        
   37543 | 2025-04-05 00:45:11 |         MASTER-OAFA | (08h 18m 43.58s , +35d 22m 46.6s) |   C |    60 | 18.9 |        
   37603 | 2025-04-05 00:45:11 |         MASTER-OAFA | (08h 18m 43.58s , +35d 22m 46.7s) |   C |   180 | 19.6 |  Coadd 
   37621 | 2025-04-05 00:46:29 |         MASTER-OAFA | (08h 18m 37.46s , +35d 21m 47.5s) |   C |    60 | 18.9 |        
   37695 | 2025-04-05 00:47:44 |         MASTER-OAFA | (08h 18m 43.10s , +35d 22m 03.5s) |   C |    60 | 19.0 |        
   37773 | 2025-04-05 00:49:01 |         MASTER-OAFA | (08h 18m 39.35s , +35d 23m 26.9s) |   C |    60 | 18.9 |        
   37863 | 2025-04-05 00:49:01 |         MASTER-OAFA | (08h 18m 39.34s , +35d 23m 26.9s) |   C |   240 | 19.7 |  Coadd 
   37850 | 2025-04-05 00:50:19 |         MASTER-OAFA | (08h 18m 39.14s , +35d 22m 02.9s) |   C |    60 | 19.0 |        
   37956 | 2025-04-05 00:51:35 |         MASTER-OAFA | (08h 18m 41.57s , +35d 23m 27.5s) |   C |   120 | 19.1 |        
   38102 | 2025-04-05 00:54:01 |         MASTER-OAFA | (08h 18m 35.68s , +35d 22m 52.5s) |   C |   120 | 19.2 |        
   38222 | 2025-04-05 00:54:01 |         MASTER-OAFA | (08h 18m 35.68s , +35d 22m 52.5s) |   C |   360 | 19.9 |  Coadd 
   38240 | 2025-04-05 00:56:19 |         MASTER-OAFA | (08h 18m 35.54s , +35d 23m 53.4s) |   C |   120 | 19.2 |        
   38376 | 2025-04-05 00:58:35 |         MASTER-OAFA | (08h 18m 41.49s , +35d 22m 54.4s) |   C |   120 | 19.3 |        
   38512 | 2025-04-05 01:00:50 |         MASTER-OAFA | (08h 18m 34.85s , +35d 21m 55.6s) |   C |   120 | 19.3 |        
   38632 | 2025-04-05 01:00:50 |         MASTER-OAFA | (08h 18m 34.86s , +35d 21m 55.6s) |   C |   360 | 19.9 |  Coadd 
   38654 | 2025-04-05 01:03:12 |         MASTER-OAFA | (08h 18m 40.41s , +35d 22m 08.9s) |   C |   120 | 19.3 |        
   38789 | 2025-04-05 01:05:28 |         MASTER-OAFA | (08h 18m 36.49s , +35d 23m 39.1s) |   C |   120 | 19.3 |        
   38924 | 2025-04-05 01:07:43 |         MASTER-OAFA | (08h 18m 36.12s , +35d 22m 16.6s) |   C |   120 | 19.2 |        
   39060 | 2025-04-05 01:09:59 |         MASTER-OAFA | (08h 18m 38.80s , +35d 23m 58.4s) |   C |   120 | 19.2 |        
   39195 | 2025-04-05 01:12:13 |         MASTER-OAFA | (08h 18m 33.23s , +35d 23m 01.1s) |   C |   120 | 19.1 |        
   39331 | 2025-04-05 01:14:30 |         MASTER-OAFA | (08h 18m 30.95s , +35d 24m 02.0s) |   C |   120 | 19.2 |        
   39467 | 2025-04-05 01:16:46 |         MASTER-OAFA | (08h 18m 37.23s , +35d 23m 02.0s) |   C |   120 | 19.2 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12363
TYPE = 35
DAYS = 0


MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the EP250404a ( EP Team et al., GCN 40051) errorbox  13675 sec after notice time and 16626 sec after trigger time at 2025-04-04 18:57:05 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 66 deg. The sun  altitude  is -28.6 deg. 

The galactic latitude b = 33 deg., longitude l = 187 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2832935

We obtain a following upper limits.  

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

   16657 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |    60 | 18.6 |        
   16717 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |   180 | 19.3 |  Coadd 
   16728 | 2025-04-04 18:58:16 |        MASTER-Tunka | (08h 19m 58.07s , +36d 00m 34.7s) |   C |    60 | 18.6 |        
   16800 | 2025-04-04 18:59:28 |        MASTER-Tunka | (08h 19m 55.11s , +36d 02m 04.0s) |   C |    60 | 18.6 |        
   16872 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |    60 | 18.7 |        
   16932 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |   180 | 19.4 |  Coadd 
   16950 | 2025-04-04 19:01:58 |        MASTER-Tunka | (08h 19m 57.66s , +36d 02m 04.7s) |   C |    60 | 18.6 |        
   17021 | 2025-04-04 19:03:09 |        MASTER-Tunka | (08h 19m 52.37s , +36d 01m 15.7s) |   C |    60 | 18.7 |        
   17095 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.7s) |   C |    60 | 18.7 |        
   17155 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.8s) |   C |   180 | 19.5 |  Coadd 
   17381 | 2025-04-04 19:09:09 |        MASTER-Tunka | (08h 19m 52.28s , +35d 59m 59.8s) |   C |    60 | 18.7 |        
   17454 | 2025-04-04 19:10:22 |        MASTER-Tunka | (08h 19m 58.20s , +36d 00m 10.2s) |   C |    60 | 18.7 |        
   17527 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.3s) |   C |    60 | 18.7 |        
   17587 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.2s) |   C |   180 | 19.4 |  Coadd 
   17599 | 2025-04-04 19:12:48 |        MASTER-Tunka | (08h 19m 54.27s , +35d 59m 56.4s) |   C |    60 | 18.6 |        
   17670 | 2025-04-04 19:13:59 |        MASTER-Tunka | (08h 19m 57.20s , +36d 01m 34.1s) |   C |    60 | 18.6 |        
   17743 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |    60 | 18.5 |        
   17803 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |   180 | 19.3 |  Coadd 
   17816 | 2025-04-04 19:16:24 |        MASTER-Tunka | (08h 19m 51.76s , +36d 01m 37.4s) |   C |    60 | 18.6 |        
   17890 | 2025-04-04 19:17:39 |        MASTER-Tunka | (08h 19m 57.64s , +36d 00m 34.5s) |   C |    60 | 18.7 |        
   17962 | 2025-04-04 19:18:51 |        MASTER-Tunka | (08h 19m 51.82s , +35d 59m 30.3s) |   C |    60 | 18.6 |        
   18035 | 2025-04-04 19:20:04 |        MASTER-Tunka | (08h 19m 57.26s , +35d 59m 42.1s) |   C |    60 | 18.6 |        
   18108 | 2025-04-04 19:21:16 |        MASTER-Tunka | (08h 19m 53.77s , +36d 01m 07.0s) |   C |    60 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12362
TYPE = 35
DAYS = 0


MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the EP250404a ( EP Team et al., GCN 40051) errorbox  13675 sec after notice time and 16626 sec after trigger time at 2025-04-04 18:57:05 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 66 deg. The sun  altitude  is -28.6 deg. 

The galactic latitude b = 33 deg., longitude l = 187 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2832935

We obtain a following upper limits.  

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

   16657 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |    60 | 18.6 |        
   16717 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |   180 | 19.3 |  Coadd 
   16728 | 2025-04-04 18:58:16 |        MASTER-Tunka | (08h 19m 58.07s , +36d 00m 34.7s) |   C |    60 | 18.6 |        
   16800 | 2025-04-04 18:59:28 |        MASTER-Tunka | (08h 19m 55.11s , +36d 02m 04.0s) |   C |    60 | 18.6 |        
   16872 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |    60 | 18.7 |        
   16932 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |   180 | 19.4 |  Coadd 
   16950 | 2025-04-04 19:01:58 |        MASTER-Tunka | (08h 19m 57.66s , +36d 02m 04.7s) |   C |    60 | 18.6 |        
   17021 | 2025-04-04 19:03:09 |        MASTER-Tunka | (08h 19m 52.37s , +36d 01m 15.7s) |   C |    60 | 18.7 |        
   17095 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.7s) |   C |    60 | 18.7 |        
   17155 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.8s) |   C |   180 | 19.5 |  Coadd 
   17381 | 2025-04-04 19:09:09 |        MASTER-Tunka | (08h 19m 52.28s , +35d 59m 59.8s) |   C |    60 | 18.7 |        
   17454 | 2025-04-04 19:10:22 |        MASTER-Tunka | (08h 19m 58.20s , +36d 00m 10.2s) |   C |    60 | 18.7 |        
   17527 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.3s) |   C |    60 | 18.7 |        
   17587 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.2s) |   C |   180 | 19.4 |  Coadd 
   17599 | 2025-04-04 19:12:48 |        MASTER-Tunka | (08h 19m 54.27s , +35d 59m 56.4s) |   C |    60 | 18.6 |        
   17670 | 2025-04-04 19:13:59 |        MASTER-Tunka | (08h 19m 57.20s , +36d 01m 34.1s) |   C |    60 | 18.6 |        
   17743 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |    60 | 18.5 |        
   17803 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |   180 | 19.3 |  Coadd 
   17816 | 2025-04-04 19:16:24 |        MASTER-Tunka | (08h 19m 51.76s , +36d 01m 37.4s) |   C |    60 | 18.6 |        
   17890 | 2025-04-04 19:17:39 |        MASTER-Tunka | (08h 19m 57.64s , +36d 00m 34.5s) |   C |    60 | 18.7 |        
   17962 | 2025-04-04 19:18:51 |        MASTER-Tunka | (08h 19m 51.82s , +35d 59m 30.3s) |   C |    60 | 18.6 |        
   18035 | 2025-04-04 19:20:04 |        MASTER-Tunka | (08h 19m 57.26s , +35d 59m 42.1s) |   C |    60 | 18.6 |        
   18108 | 2025-04-04 19:21:16 |        MASTER-Tunka | (08h 19m 53.77s , +36d 01m 07.0s) |   C |    60 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 12361
TYPE = 34
DAYS = 0


MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the EP250404a ( EP Team et al., GCN 40051) errorbox  13675 sec after notice time and 16626 sec after trigger time at 2025-04-04 18:57:05 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 66 deg. The sun  altitude  is -28.6 deg. 

The galactic latitude b = 33 deg., longitude l = 187 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2832935

We obtain a following upper limits.  

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

   16657 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |    60 | 18.6 |        
   16717 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |   180 | 19.3 |  Coadd 
   16728 | 2025-04-04 18:58:16 |        MASTER-Tunka | (08h 19m 58.07s , +36d 00m 34.7s) |   C |    60 | 18.6 |        
   16800 | 2025-04-04 18:59:28 |        MASTER-Tunka | (08h 19m 55.11s , +36d 02m 04.0s) |   C |    60 | 18.6 |        
   16872 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |    60 | 18.7 |        
   16932 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |   180 | 19.4 |  Coadd 
   16950 | 2025-04-04 19:01:58 |        MASTER-Tunka | (08h 19m 57.66s , +36d 02m 04.7s) |   C |    60 | 18.6 |        
   17021 | 2025-04-04 19:03:09 |        MASTER-Tunka | (08h 19m 52.37s , +36d 01m 15.7s) |   C |    60 | 18.7 |        
   17095 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.7s) |   C |    60 | 18.7 |        
   17155 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.8s) |   C |   180 | 19.5 |  Coadd 
   17381 | 2025-04-04 19:09:09 |        MASTER-Tunka | (08h 19m 52.28s , +35d 59m 59.8s) |   C |    60 | 18.7 |        
   17454 | 2025-04-04 19:10:22 |        MASTER-Tunka | (08h 19m 58.20s , +36d 00m 10.2s) |   C |    60 | 18.7 |        
   17527 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.3s) |   C |    60 | 18.7 |        
   17587 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.2s) |   C |   180 | 19.4 |  Coadd 
   17599 | 2025-04-04 19:12:48 |        MASTER-Tunka | (08h 19m 54.27s , +35d 59m 56.4s) |   C |    60 | 18.6 |        
   17670 | 2025-04-04 19:13:59 |        MASTER-Tunka | (08h 19m 57.20s , +36d 01m 34.1s) |   C |    60 | 18.6 |        
   17743 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |    60 | 18.5 |        
   17803 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |   180 | 19.3 |  Coadd 
   17816 | 2025-04-04 19:16:24 |        MASTER-Tunka | (08h 19m 51.76s , +36d 01m 37.4s) |   C |    60 | 18.6 |        
   17890 | 2025-04-04 19:17:39 |        MASTER-Tunka | (08h 19m 57.64s , +36d 00m 34.5s) |   C |    60 | 18.7 |        
   17962 | 2025-04-04 19:18:51 |        MASTER-Tunka | (08h 19m 51.82s , +35d 59m 30.3s) |   C |    60 | 18.6 |        
   18035 | 2025-04-04 19:20:04 |        MASTER-Tunka | (08h 19m 57.26s , +35d 59m 42.1s) |   C |    60 | 18.6 |        
   18108 | 2025-04-04 19:21:16 |        MASTER-Tunka | (08h 19m 53.77s , +36d 01m 07.0s) |   C |    60 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 12360
TYPE = 35
DAYS = 0


MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the EP250404a ( EP Team et al., GCN 40051) errorbox  13675 sec after notice time and 16626 sec after trigger time at 2025-04-04 18:57:05 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 66 deg. The sun  altitude  is -28.6 deg. 

The galactic latitude b = 33 deg., longitude l = 187 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2832935

We obtain a following upper limits.  

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

   16657 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |    60 | 18.6 |        
   16717 | 2025-04-04 18:57:05 |        MASTER-Tunka | (08h 19m 51.88s , +36d 00m 34.0s) |   C |   180 | 19.3 |  Coadd 
   16728 | 2025-04-04 18:58:16 |        MASTER-Tunka | (08h 19m 58.07s , +36d 00m 34.7s) |   C |    60 | 18.6 |        
   16800 | 2025-04-04 18:59:28 |        MASTER-Tunka | (08h 19m 55.11s , +36d 02m 04.0s) |   C |    60 | 18.6 |        
   16872 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |    60 | 18.7 |        
   16932 | 2025-04-04 19:00:41 |        MASTER-Tunka | (08h 19m 55.07s , +36d 00m 32.5s) |   C |   180 | 19.4 |  Coadd 
   16950 | 2025-04-04 19:01:58 |        MASTER-Tunka | (08h 19m 57.66s , +36d 02m 04.7s) |   C |    60 | 18.6 |        
   17021 | 2025-04-04 19:03:09 |        MASTER-Tunka | (08h 19m 52.37s , +36d 01m 15.7s) |   C |    60 | 18.7 |        
   17095 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.7s) |   C |    60 | 18.7 |        
   17155 | 2025-04-04 19:04:24 |        MASTER-Tunka | (08h 19m 51.30s , +36d 02m 12.8s) |   C |   180 | 19.5 |  Coadd 
   17381 | 2025-04-04 19:09:09 |        MASTER-Tunka | (08h 19m 52.28s , +35d 59m 59.8s) |   C |    60 | 18.7 |        
   17454 | 2025-04-04 19:10:22 |        MASTER-Tunka | (08h 19m 58.20s , +36d 00m 10.2s) |   C |    60 | 18.7 |        
   17527 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.3s) |   C |    60 | 18.7 |        
   17587 | 2025-04-04 19:11:35 |        MASTER-Tunka | (08h 19m 54.28s , +36d 01m 24.2s) |   C |   180 | 19.4 |  Coadd 
   17599 | 2025-04-04 19:12:48 |        MASTER-Tunka | (08h 19m 54.27s , +35d 59m 56.4s) |   C |    60 | 18.6 |        
   17670 | 2025-04-04 19:13:59 |        MASTER-Tunka | (08h 19m 57.20s , +36d 01m 34.1s) |   C |    60 | 18.6 |        
   17743 | 2025-04-04 19:15:12 |        MASTER-Tunka | (08h 19m 51.23s , +36d 00m 41.3s) |   C |    60 | 18.5 |        
   17816 | 2025-04-04 19:16:24 |        MASTER-Tunka | (08h 19m 51.76s , +36d 01m 37.4s) |   C |    60 | 18.6 |        
   17890 | 2025-04-04 19:17:39 |        MASTER-Tunka | (08h 19m 57.64s , +36d 00m 34.5s) |   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