MASTER Net MASTER Database: GRB230427.44 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 SWIFT GRB230427.44
Trignum 1165948
Trigger time 2023-04-27 10:31:51.98
Notice time 2023-04-27 10:32:58.261019
Coord, eb (10h 13m 17.76s , +48d 10m 48.0s) , 0.05
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
2213028 2023-04-27 10:39:56.954641 10h 13m 15.12s +48d 12m 14.4s SWIFT 0.000194444 alert 1165948 1 81 alert
2213009 2023-04-27 10:34:05.986158 10h 13m 23.09s +48d 09m 45.7s SWIFT 0 alert 1165948 2 68 alert
2213038 2023-04-27 10:44:11.000994 10h 13m 14.88s +48d 12m 14.4s SWIFT 0.0005 alert 1165948 2 67 alert
2213007 2023-04-27 10:32:58.261019 10h 13m 17.76s +48d 10m 48.0s SWIFT 0.05 alert 1165948 1 61 alert

DAYS:

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

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

2023-04-27 10:31:51 (JD 2460061.938785)

Siderial time 3.382656 h

Ra 10:13:17.76 Dec 48:10:48.00
(153.324000d, 48.180000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 81.44 Azimuth: 279.56

Sun: Altitude: 0.46 Azimuth: 111.21

Moon: Altitude: 61.96 Azimuth: 30.81

Tunka

Object: Altitude: 66.12 Azimuth: 263.91

Sun: Altitude: 15.72 Azimuth: 92.34

Moon: Altitude: 62.25 Azimuth: 342.22

Kislovodsk

Object: Altitude: 26.80 Azimuth: 227.76

Sun: Altitude: 54.84 Azimuth: 37.95

Moon: Altitude: 31.35 Azimuth: 264.25

Tavrida

Object: Altitude: 23.11 Azimuth: 224.12

Sun: Altitude: 57.11 Azimuth: 23.49

Moon: Altitude: 25.46 Azimuth: 259.31

SAAO

Object: Altitude: -42.49 Azimuth: 231.99

Sun: Altitude: 43.90 Azimuth: 180.45

Moon: Altitude: -14.05 Azimuth: 249.16

IAC

Object: Altitude: -10.72 Azimuth: 195.56

Sun: Altitude: 52.15 Azimuth: 284.71

Moon: Altitude: -17.35 Azimuth: 227.95

Argentina

Object: Altitude: -62.35 Azimuth: 134.91

Sun: Altitude: -7.57 Azimuth: 258.51

Moon: Altitude: -83.02 Azimuth: 10.59

Mexico

Object: Altitude: 11.22 Azimuth: 140.12

Sun: Altitude: -25.43 Azimuth: 233.64

Moon: Altitude: -20.83 Azimuth: 139.07

Ural

Object: Altitude: 43.17 Azimuth: 244.44

Sun: Altitude: 37.83 Azimuth: 49.81

Moon: Altitude: 40.82 Azimuth: 287.96

Vostryakovo

Object: Altitude: 32.14 Azimuth: 230.28

Sun: Altitude: 46.38 Azimuth: 23.82

Moon: Altitude: 29.11 Azimuth: 267.56

Gal. latitude: 53.465954 Gal. longitude: 167.730540

Dist. to Sun: 97.921558

Dist. to Moon: 32.067897

Moon coord.: (125.206543 d, 24.928482 d)

Sun coord.: (34.267027 d, 13.722483 d)

Lunar disk: 0.458540

Lunar phase: 94.756399

Lunar bright limb: 282.885217

No SN in this field

2023-04-27 10:32:58 (JD 2460061.939560)

Siderial time 3.401318 h

Ra 10:13:17.76 Dec 48:10:48.00
(153.324000d, 48.180000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 81.61 Azimuth: 279.98

Sun: Altitude: 0.30 Azimuth: 111.42

Moon: Altitude: 61.87 Azimuth: 31.30

Tunka

Object: Altitude: 66.29 Azimuth: 264.09

Sun: Altitude: 15.54 Azimuth: 92.56

Moon: Altitude: 62.30 Azimuth: 342.74

Kislovodsk

Object: Altitude: 26.95 Azimuth: 227.89

Sun: Altitude: 54.71 Azimuth: 38.36

Moon: Altitude: 31.54 Azimuth: 264.43

Tavrida

Object: Altitude: 23.24 Azimuth: 224.26

Sun: Altitude: 57.03 Azimuth: 23.97

Moon: Altitude: 25.64 Azimuth: 259.48

SAAO

Object: Altitude: -42.30 Azimuth: 231.97

Sun: Altitude: 43.90 Azimuth: 180.07

Moon: Altitude: -13.83 Azimuth: 249.04

IAC

Object: Altitude: -10.65 Azimuth: 195.74

Sun: Altitude: 52.39 Azimuth: 284.92

Moon: Altitude: -17.18 Azimuth: 228.13

Argentina

Object: Altitude: -62.52 Azimuth: 135.09

Sun: Altitude: -7.34 Azimuth: 258.37

Moon: Altitude: -83.05 Azimuth: 8.59

Mexico

Object: Altitude: 11.06 Azimuth: 140.23

Sun: Altitude: -25.24 Azimuth: 233.85

Moon: Altitude: -20.99 Azimuth: 139.28

Ural

Object: Altitude: 43.31 Azimuth: 244.61

Sun: Altitude: 37.71 Azimuth: 50.12

Moon: Altitude: 40.96 Azimuth: 288.23

Vostryakovo

Object: Altitude: 32.26 Azimuth: 230.44

Sun: Altitude: 46.32 Azimuth: 24.20

Moon: Altitude: 29.26 Azimuth: 267.78

Gal. latitude: 53.465954 Gal. longitude: 167.730540

Dist. to Sun: 97.920938

Dist. to Moon: 32.064281

Moon coord.: (125.216419 d, 24.926393 d)

Sun coord.: (34.267761 d, 13.722731 d)

Lunar disk: 0.458614

Lunar phase: 94.747951

Lunar bright limb: 282.889311

No SN in this field

2023-04-27 11:32:58 (JD 2460061.981227)

Siderial time 4.404056 h

Ra 10:13:17.76 Dec 48:10:48.00
(153.324000d, 48.180000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 87.27 Azimuth: 39.45

Sun: Altitude: -8.19 Azimuth: 123.31

Moon: Altitude: 55.49 Azimuth: 53.64

Tunka

Object: Altitude: 75.57 Azimuth: 275.94

Sun: Altitude: 6.39 Azimuth: 104.13

Moon: Altitude: 62.65 Azimuth: 11.44

Kislovodsk

Object: Altitude: 35.41 Azimuth: 234.18

Sun: Altitude: 46.65 Azimuth: 57.65

Moon: Altitude: 41.94 Azimuth: 274.53

Tavrida

Object: Altitude: 31.15 Azimuth: 231.18

Sun: Altitude: 50.86 Azimuth: 46.56

Moon: Altitude: 35.82 Azimuth: 269.22

SAAO

Object: Altitude: -32.41 Azimuth: 230.01

Sun: Altitude: 41.72 Azimuth: 160.39

Moon: Altitude: -2.62 Azimuth: 242.07

IAC

Object: Altitude: -6.05 Azimuth: 204.73

Sun: Altitude: 64.62 Azimuth: 300.38

Moon: Altitude: -7.11 Azimuth: 236.81

Argentina

Object: Altitude: -70.41 Azimuth: 150.79

Sun: Altitude: 4.93 Azimuth: 250.50

Moon: Altitude: -76.33 Azimuth: 297.38

Mexico

Object: Altitude: 3.38 Azimuth: 146.71

Sun: Altitude: -14.22 Azimuth: 243.99

Moon: Altitude: -28.17 Azimuth: 151.42

Ural

Object: Altitude: 50.95 Azimuth: 254.15

Sun: Altitude: 30.82 Azimuth: 65.69

Moon: Altitude: 47.95 Azimuth: 303.91

Vostryakovo

Object: Altitude: 39.25 Azimuth: 239.30

Sun: Altitude: 41.58 Azimuth: 43.40

Moon: Altitude: 37.38 Azimuth: 280.20

Gal. latitude: 53.465954 Gal. longitude: 167.730540

Dist. to Sun: 97.887626

Dist. to Moon: 31.872949

Moon coord.: (125.746508 d, 24.813192 d)

Sun coord.: (34.307178 d, 13.736059 d)

Lunar disk: 0.462562

Lunar phase: 94.294075

Lunar bright limb: 283.108554

No SN in this field

2024-03-02 10:21:52 (JD 2460371.931852)

Siderial time 23.585858 h

Ra 10:13:17.76 Dec 48:10:48.00
(153.324000d, 48.180000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 46.17 Azimuth: 244.55

Sun: Altitude: -11.98 Azimuth: 93.37

Moon: Altitude: -54.64 Azimuth: 230.39

Tunka

Object: Altitude: 33.80 Azimuth: 233.17

Sun: Altitude: 3.06 Azimuth: 74.50

Moon: Altitude: -61.05 Azimuth: 188.72

Kislovodsk

Object: Altitude: 4.59 Azimuth: 196.65

Sun: Altitude: 37.33 Azimuth: 19.23

Moon: Altitude: -40.01 Azimuth: 95.45

Tavrida

Object: Altitude: 4.08 Azimuth: 191.18

Sun: Altitude: 37.84 Azimuth: 8.55

Moon: Altitude: -33.88 Azimuth: 90.03

SAAO

Object: Altitude: -73.96 Azimuth: 188.85

Sun: Altitude: 63.99 Azimuth: 194.64

Moon: Altitude: 2.53 Azimuth: 64.11

IAC

Object: Altitude: -7.78 Azimuth: 158.10

Sun: Altitude: 34.96 Azimuth: 303.16

Moon: Altitude: 9.01 Azimuth: 57.58

Argentina

Object: Altitude: -25.31 Azimuth: 132.59

Sun: Altitude: -1.80 Azimuth: 279.46

Moon: Altitude: 76.13 Azimuth: 125.95

Mexico

Object: Altitude: 47.09 Azimuth: 129.05

Sun: Altitude: -43.74 Azimuth: 247.83

Moon: Altitude: 29.20 Azimuth: 329.40

Ural

Object: Altitude: 20.93 Azimuth: 208.77

Sun: Altitude: 20.68 Azimuth: 34.55

Moon: Altitude: -45.90 Azimuth: 123.79

Vostryakovo

Object: Altitude: 15.00 Azimuth: 194.09

Sun: Altitude: 26.94 Azimuth: 11.80

Moon: Altitude: -35.35 Azimuth: 100.45

Gal. latitude: 53.465954 Gal. longitude: 167.730540

Dist. to Sun: 138.004585

Dist. to Moon: 101.523160

Moon coord.: (234.663081 d, -23.079189 d)

Sun coord.: (343.394068 d, -7.065111 d)

Lunar disk: 0.623753

Lunar phase: 75.669972

Lunar bright limb: 104.217516

No SN in this field

Recent coverage and limits telegrams

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

  ID = 8096
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) was pointed to the SWIFT GRB230427.44 (trigger No 1165948,10h 13m 17.76s , +48d 10m 48.0s, R=0.05) errorbox  24243 sec after notice time and 24285 sec after trigger time at 2023-04-27 17:16:37 UT, with upper limit up to  19.8 mag. Observations started at twilight.  The observations began at zenith distance =  6 deg. The sun  altitude  is -12.4 deg. 

The galactic latitude b = 53 deg., longitude l = 168 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2213007

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

   24376 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   24556 |   MASTER-Kislovodsk |   C |   540 | 19.1 |  Coadd 
   24376 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   24556 |   MASTER-Kislovodsk |   C |   540 | 19.8 |  Coadd 
   24736 |   MASTER-Kislovodsk |   C |   900 | 19.4 |  Coadd 
   24916 |   MASTER-Kislovodsk |   C |  1260 | 19.8 |  Coadd 
   25366 |   MASTER-Kislovodsk |   C |  2160 | 19.4 |  Coadd 
   24576 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   24777 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   24777 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   25178 |   MASTER-Kislovodsk |   C |   180 | 18.5 |        
   25358 |   MASTER-Kislovodsk |   C |   540 | 19.0 |  Coadd 
   25178 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   25358 |   MASTER-Kislovodsk |   C |   540 | 19.3 |  Coadd 
   25379 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   25379 |   MASTER-Kislovodsk |   C |   180 | 19.3 |        
   26647 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
   26647 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   27854 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   27854 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   29069 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   29069 |   MASTER-Kislovodsk |   C |   180 | 18.5 |        
   30303 |   MASTER-Kislovodsk |   C |   180 | 18.5 |        
   30303 |   MASTER-Kislovodsk |   C |   180 | 18.2 |        
   31513 |   MASTER-Kislovodsk |   C |   180 | 18.0 |        
   31513 |   MASTER-Kislovodsk |   C |   180 | 18.4 |        
   32723 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
   32723 |   MASTER-Kislovodsk |   C |   180 | 17.4 |        
   35337 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   35337 |   MASTER-Kislovodsk |   C |   180 | 17.8 |        
   36543 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   36543 |   MASTER-Kislovodsk |   C |   180 | 16.9 |        
   37754 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   37754 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
   38966 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
   38966 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
   40169 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   40169 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
   42596 |   MASTER-Kislovodsk |   C |   180 | 16.5 |        
   42596 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
   45015 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
   45015 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   46219 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
   46219 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
   47555 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
   47555 |   MASTER-Kislovodsk |   C |   180 | 17.9 |        
   48758 |   MASTER-Kislovodsk |   C |   180 | 17.8 |        
   48758 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 8092
TYPE = 35
DAYS = 0.5


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) was pointed to the SWIFT GRB230427.44 (trigger No 1165948,10h 13m 17.76s , +48d 10m 48.0s, R=0.05) errorbox  24243 sec after notice time and 24285 sec after trigger time at 2023-04-27 17:16:37 UT, with upper limit up to  19.8 mag. Observations started at twilight.  The observations began at zenith distance =  6 deg. The sun  altitude  is -12.4 deg. 

The galactic latitude b = 53 deg., longitude l = 168 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2213007

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

   24376 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   24556 |   MASTER-Kislovodsk |   C |   540 | 19.1 |  Coadd 
   24376 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   24556 |   MASTER-Kislovodsk |   C |   540 | 19.8 |  Coadd 
   24576 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   24777 |   MASTER-Kislovodsk |   C |   180 | 18.7 |        
   24777 |   MASTER-Kislovodsk |   C |   180 | 19.1 |        
   25178 |   MASTER-Kislovodsk |   C |   180 | 18.5 |        
   25358 |   MASTER-Kislovodsk |   C |   540 | 19.0 |  Coadd 
   25178 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   25358 |   MASTER-Kislovodsk |   C |   540 | 19.3 |  Coadd 
   25379 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   25379 |   MASTER-Kislovodsk |   C |   180 | 19.3 |        
   26647 |   MASTER-Kislovodsk |   C |   180 | 18.1 |        
   26647 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   27854 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   27854 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
   29069 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   29069 |   MASTER-Kislovodsk |   C |   180 | 18.5 |        
   30303 |   MASTER-Kislovodsk |   C |   180 | 18.5 |        
   30303 |   MASTER-Kislovodsk |   C |   180 | 18.2 |        
   31513 |   MASTER-Kislovodsk |   C |   180 | 18.0 |        
   31513 |   MASTER-Kislovodsk |   C |   180 | 18.4 |        
   32723 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
   32723 |   MASTER-Kislovodsk |   C |   180 | 17.4 |        
   35337 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   35337 |   MASTER-Kislovodsk |   C |   180 | 17.8 |        
   36543 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   36543 |   MASTER-Kislovodsk |   C |   180 | 16.9 |        
   37754 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   37754 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
   38966 |   MASTER-Kislovodsk |   C |   180 | 17.0 |        
   38966 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
   40169 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   40169 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
   42596 |   MASTER-Kislovodsk |   C |   180 | 16.5 |        
   42596 |   MASTER-Kislovodsk |   C |   180 | 16.8 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 8090
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) was pointed to the SWIFT GRB230427.44 (trigger No 1165948,10h 13m 17.76s , +48d 10m 48.0s, R=0.05) errorbox  24243 sec after notice time and 24285 sec after trigger time at 2023-04-27 17:16:37 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance =  6 deg. The sun  altitude  is -12.4 deg. 

The galactic latitude b = 53 deg., longitude l = 168 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2213007

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

   24376 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   24376 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 8089
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) was pointed to the SWIFT GRB230427.44 (trigger No 1165948,10h 13m 17.76s , +48d 10m 48.0s, R=0.05) errorbox  24243 sec after notice time and 24285 sec after trigger time at 2023-04-27 17:16:37 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance =  6 deg. The sun  altitude  is -12.4 deg. 

The galactic latitude b = 53 deg., longitude l = 168 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2213007

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

   24376 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   24376 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 8088
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) was pointed to the SWIFT GRB230427.44 (trigger No 1165948,10h 13m 17.76s , +48d 10m 48.0s, R=0.05) errorbox  24243 sec after notice time and 24285 sec after trigger time at 2023-04-27 17:16:37 UT, with upper limit up to  19.0 mag. Observations started at twilight.  The observations began at zenith distance =  6 deg. The sun  altitude  is -12.4 deg. 

The galactic latitude b = 53 deg., longitude l = 168 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2213007

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

   24376 |   MASTER-Kislovodsk |   C |   180 | 18.3 |        
   24376 |   MASTER-Kislovodsk |   C |   180 | 18.8 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 18.6 |        
   24576 |   MASTER-Kislovodsk |   C |   180 | 19.0 |        
Filter C is a clear (unfiltred) band. 


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



 

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