GRB210725.50 page :: MASTER Database

MASTER Net MASTER Database: GRB210725.50 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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Name

SWIFT GRB210725.50

Trignum

1061554

Trigger time

2021-07-25 12:03:32

Notice time

2021-07-25 12:22:32.196807

Coord, eb

(12h 51m 41.28s , +17d 06m 28.8s) , 0.0005

Max dist: 1 sigma 3 sigma

AGN candidates:	Milliquas	??	r90wise	??	wiseXgaia	??
BL Lac candidates:	1 Sigma	??	3 Sigma	??

MASTER observatories and transients from them in error-field

Kislovodsk Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ?? 

Amur Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ?? 

Tunka Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ?? 

OAFA Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ?? 

IAC Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ?? 

SAAO Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ?? 

Tavrida Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ?? 

OAGH Transients (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
Trans. Difference (Undef)
 ?? 
(All)
 ?? 
(Yes)
 ?? 
(Gal)
 ??

You are viewing outdated information, relevant error box is here

All alerts for this trigger

id	noticetime	coord2000	satel	errorbox	type	trigger	seq	trig_type	links
2264148	2023-09-02 03:37:57.762863	12^h 51^m 43.68^s +17^d 07^m 30.0^s	SWIFT	0.05	retraction	1061554	1	4044	retraction
1669952	2021-07-25 12:18:38.756468	12^h 51^m 41.78^s +17^d 08^m 10.7^s	SWIFT	0	alert	1061554	6	68	alert
1669960	2021-07-25 12:22:32.196807	12^h 51^m 41.28^s +17^d 06^m 28.8^s	SWIFT	0.0005	alert	1061554	5	67	alert
1669949	2021-07-25 12:02:57.904441	12^h 51^m 43.68^s +17^d 07^m 30.0^s	SWIFT	0.05	alert	1061554	3	61	alert

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

2021-07-25 12:03:32 (JD 2459421.002454)

Siderial time 10.794898 h

Ra 12:51:41.28 Dec 17:06:28.80
(192.922000d, 17.108000d)

Rise 2021-07-26 09:12:17

Transit 2021-07-26 17:03:15

Set 2021-07-27 00:54:12

Amur

Object: Altitude: 32.81 Azimuth: 76.76

Sun: Altitude: -5.97 Azimuth: 130.89

Moon: Altitude: -4.39 Azimuth: 294.99

Tunka

Object: Altitude: 45.93 Azimuth: 51.02

Sun: Altitude: 7.85 Azimuth: 111.89

Moon: Altitude: -19.50 Azimuth: 276.46

Kislovodsk

Object: Altitude: 55.44 Azimuth: 312.19

Sun: Altitude: 47.49 Azimuth: 69.11

Moon: Altitude: -59.27 Azimuth: 223.79

Tavrida

Object: Altitude: 49.99 Azimuth: 302.42

Sun: Altitude: 52.54 Azimuth: 58.93

Moon: Altitude: -62.06 Azimuth: 208.02

SAAO

Object: Altitude: 22.62 Azimuth: 230.09

Sun: Altitude: 34.47 Azimuth: 156.56

Moon: Altitude: -38.48 Azimuth: 359.68

IAC

Object: Altitude: 12.18 Azimuth: 256.96

Sun: Altitude: 72.27 Azimuth: 295.61

Moon: Altitude: -55.02 Azimuth: 96.88

Argentina

Object: Altitude: -49.30 Azimuth: 280.96

Sun: Altitude: 5.74 Azimuth: 242.66

Moon: Altitude: 9.84 Azimuth: 73.50

Mexico

Object: Altitude: -41.83 Azimuth: 181.28

Sun: Altitude: -6.53 Azimuth: 242.40

Moon: Altitude: 21.16 Azimuth: 49.94

Ural

Object: Altitude: 49.49 Azimuth: 346.58

Sun: Altitude: 33.01 Azimuth: 74.56

Moon: Altitude: -42.42 Azimuth: 233.65

Vostryakovo

Object: Altitude: 45.11 Azimuth: 316.09

Sun: Altitude: 44.55 Azimuth: 53.35

Moon: Altitude: -51.48 Azimuth: 206.76

Gal. latitude: 79.689301 Gal. longitude: 306.590624

Dist. to Sun: 64.313376

Dist. to Moon: 134.407406

Moon coord.: (324.847727 d, -19.142374 d)

Sun coord.: (124.746916 d, 19.612513 d)

Lunar disk: 0.973012

Lunar phase: 18.910944

Lunar bright limb: 85.110906

No SN in this field

2021-07-25 12:22:32 (JD 2459421.015648)

Siderial time 11.112432 h

Ra 12:51:41.28 Dec 17:06:28.80
(192.922000d, 17.108000d)

Rise 2021-07-26 09:12:17

Transit 2021-07-26 17:03:15

Set 2021-07-27 00:54:12

Amur

Object: Altitude: 29.83 Azimuth: 80.79

Sun: Altitude: -8.20 Azimuth: 134.80

Moon: Altitude: -1.74 Azimuth: 298.41

Tunka

Object: Altitude: 43.56 Azimuth: 56.49

Sun: Altitude: 5.16 Azimuth: 115.49

Moon: Altitude: -16.65 Azimuth: 279.89

Kislovodsk

Object: Altitude: 57.84 Azimuth: 319.22

Sun: Altitude: 44.24 Azimuth: 73.53

Moon: Altitude: -56.80 Azimuth: 230.50

Tavrida

Object: Altitude: 52.75 Azimuth: 308.22

Sun: Altitude: 49.57 Azimuth: 64.26

Moon: Altitude: -60.28 Azimuth: 216.21

SAAO

Object: Altitude: 25.62 Azimuth: 226.34

Sun: Altitude: 32.72 Azimuth: 151.62

Moon: Altitude: -38.32 Azimuth: 354.16

IAC

Object: Altitude: 16.28 Azimuth: 259.00

Sun: Altitude: 75.88 Azimuth: 305.31

Moon: Altitude: -58.98 Azimuth: 100.06

Argentina

Object: Altitude: -45.30 Azimuth: 277.73

Sun: Altitude: 9.28 Azimuth: 239.90

Moon: Altitude: 6.11 Azimuth: 71.30

Mexico

Object: Altitude: -41.52 Azimuth: 187.36

Sun: Altitude: -2.89 Azimuth: 245.00

Moon: Altitude: 18.13 Azimuth: 53.22

Ural

Object: Altitude: 49.94 Azimuth: 353.59

Sun: Altitude: 30.50 Azimuth: 78.91

Moon: Altitude: -40.31 Azimuth: 238.67

Vostryakovo

Object: Altitude: 46.88 Azimuth: 322.13

Sun: Altitude: 42.31 Azimuth: 58.68

Moon: Altitude: -50.12 Azimuth: 213.26

Gal. latitude: 79.689301 Gal. longitude: 306.590624

Dist. to Sun: 64.301792

Dist. to Moon: 134.575770

Moon coord.: (325.032348 d, -19.087436 d)

Sun coord.: (124.759946 d, 19.609654 d)

Lunar disk: 0.972541

Lunar phase: 19.076831

Lunar bright limb: 84.946290

No SN in this field

2021-07-25 13:22:32 (JD 2459421.057315)

Siderial time 12.115169 h

Ra 12:51:41.28 Dec 17:06:28.80
(192.922000d, 17.108000d)

Rise 2021-07-26 09:12:17

Transit 2021-07-26 17:03:15

Set 2021-07-27 00:54:12

Amur

Object: Altitude: 20.26 Azimuth: 92.65

Sun: Altitude: -14.19 Azimuth: 147.85

Moon: Altitude: 6.05 Azimuth: 309.66

Tunka

Object: Altitude: 35.20 Azimuth: 71.67

Sun: Altitude: -2.76 Azimuth: 127.20

Moon: Altitude: -7.90 Azimuth: 290.66

Kislovodsk

Object: Altitude: 62.84 Azimuth: 346.74

Sun: Altitude: 33.59 Azimuth: 85.51

Moon: Altitude: -47.71 Azimuth: 247.33

Tavrida

Object: Altitude: 59.71 Azimuth: 331.06

Sun: Altitude: 39.48 Azimuth: 78.21

Moon: Altitude: -52.64 Azimuth: 236.92

SAAO

Object: Altitude: 33.72 Azimuth: 212.65

Sun: Altitude: 25.39 Azimuth: 137.78

Moon: Altitude: -35.48 Azimuth: 337.41

IAC

Object: Altitude: 29.39 Azimuth: 265.40

Sun: Altitude: 80.93 Azimuth: 16.97

Moon: Altitude: -71.05 Azimuth: 115.75

Argentina

Object: Altitude: -32.55 Azimuth: 269.15

Sun: Altitude: 19.73 Azimuth: 230.08

Moon: Altitude: -5.35 Azimuth: 63.83

Mexico

Object: Altitude: -37.86 Azimuth: 205.46

Sun: Altitude: 9.08 Azimuth: 252.53

Moon: Altitude: 7.76 Azimuth: 62.36

Ural

Object: Altitude: 49.27 Azimuth: 15.82

Sun: Altitude: 22.37 Azimuth: 91.84

Moon: Altitude: -32.99 Azimuth: 253.10

Vostryakovo

Object: Altitude: 50.81 Azimuth: 343.22

Sun: Altitude: 34.52 Azimuth: 73.77

Moon: Altitude: -44.42 Azimuth: 231.64

Gal. latitude: 79.689301 Gal. longitude: 306.590624

Dist. to Sun: 64.265214

Dist. to Moon: 135.106476

Moon coord.: (325.614132 d, -18.912872 d)

Sun coord.: (124.801090 d, 19.600619 d)

Lunar disk: 0.971027

Lunar phase: 19.600703

Lunar bright limb: 84.440025

No SN in this field

2025-05-05 11:28:02 (JD 2460800.977801)

Siderial time 4.881169 h

Ra 12:51:41.28 Dec 17:06:28.80
(192.922000d, 17.108000d)

Rise 2025-05-05 14:34:34

Transit 2025-05-05 22:25:32

Set 2025-05-05 06:20:27

Amur

Object: Altitude: 49.09 Azimuth: 313.43

Sun: Altitude: -5.54 Azimuth: 123.97

Moon: Altitude: 53.29 Azimuth: 23.82

Tunka

Object: Altitude: 35.20 Azimuth: 288.33

Sun: Altitude: 8.97 Azimuth: 105.01

Moon: Altitude: 52.87 Azimuth: 344.06

Kislovodsk

Object: Altitude: -4.94 Azimuth: 240.56

Sun: Altitude: 49.21 Azimuth: 59.05

Moon: Altitude: 24.71 Azimuth: 271.86

Tavrida

Object: Altitude: -9.54 Azimuth: 234.09

Sun: Altitude: 53.51 Azimuth: 47.56

Moon: Altitude: 18.64 Azimuth: 266.35

SAAO

Object: Altitude: -48.00 Azimuth: 280.58

Sun: Altitude: 39.50 Azimuth: 162.48

Moon: Altitude: -10.02 Azimuth: 257.88

IAC

Object: Altitude: -44.20 Azimuth: 188.23

Sun: Altitude: 65.39 Azimuth: 294.19

Moon: Altitude: -24.36 Azimuth: 234.72

Argentina

Object: Altitude: -45.45 Azimuth: 82.16

Sun: Altitude: 2.72 Azimuth: 248.89

Moon: Altitude: -73.60 Azimuth: 7.86

Mexico

Object: Altitude: 6.83 Azimuth: 105.88

Sun: Altitude: -13.35 Azimuth: 241.33

Moon: Altitude: -27.52 Azimuth: 131.77

Ural

Object: Altitude: 10.16 Azimuth: 254.16

Sun: Altitude: 33.49 Azimuth: 66.33

Moon: Altitude: 32.48 Azimuth: 293.47

Vostryakovo

Object: Altitude: -1.45 Azimuth: 236.31

Sun: Altitude: 44.30 Azimuth: 43.69

Moon: Altitude: 21.13 Azimuth: 273.13

Gal. latitude: 79.689301 Gal. longitude: 306.590624

Dist. to Sun: 135.717682

Dist. to Moon: 42.503343

Moon coord.: (148.570357 d, 15.532100 d)

Sun coord.: (42.408726 d, 16.304445 d)

Lunar disk: 0.592344

Lunar phase: 79.357068

Lunar bright limb: 290.370280

No SN in this field

Recent coverage and limits telegrams

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

  ID = 4682
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 GRB 210725B ( M. G. Bernardini et al., GCN 30508) errorbox  21999 sec after notice time and 22074 sec after trigger time at 2021-07-25 18:08:42 UT, with upper limit up to  17.8 mag. Observations started at twilight.  The observations began at zenith distance = 60 deg. The sun  altitude  is -13.9 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 210725B errorbox  22581 sec after notice time and 22657 sec after trigger time at 2021-07-25 18:18:25 UT, with upper limit up to  18.7 mag. Observations started at twilight.  The observations began at zenith distance = 56 deg. The sun  altitude  is -10.3 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210725B errorbox  26312 sec after notice time and 26387 sec after trigger time at 2021-07-25 19:20:35 UT, with upper limit up to  13.1 mag. The observations began at zenith distance = 76 deg. The sun  altitude  is -42.7 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the SWIFT GRB 210725B errorbox  32974 sec after notice time and 33050 sec after trigger time at 2021-07-25 21:11:38 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 50 deg. The sun  altitude  is -15.5 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 210725B errorbox  39102 sec after notice time and 39178 sec after trigger time at 2021-07-25 22:53:46 UT, with upper limit up to  19.2 mag. Observations started at twilight.  The observations began at zenith distance = 54 deg. The sun  altitude  is -12.5 deg. 

The galactic latitude b = 80 deg., longitude l = 307 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1669943

We obtain a following upper limits.  

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

   22165 |   MASTER-Kislovodsk |   C |   180 | 17.3 |        
   22165 |   MASTER-Kislovodsk |   C |   180 | 17.6 |        
   22389 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
   22389 |   MASTER-Kislovodsk |   C |   180 | 17.8 |        
   22747 |      MASTER-Tavrida |   C |   180 | 16.5 |        
   22856 |   MASTER-Kislovodsk |   C |   180 | 16.1 |        
   22856 |   MASTER-Kislovodsk |   C |   180 | 16.1 |        
   24563 |      MASTER-Tavrida |   C |   180 | 18.7 |        
   24563 |      MASTER-Tavrida |   C |   180 | 17.7 |        
   25004 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
   25004 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   26478 |         MASTER-SAAO |   C |   180 | 13.1 |        
   26623 |   MASTER-Kislovodsk |   C |   180 | 14.7 |        
   26623 |   MASTER-Kislovodsk |   C |   180 | 15.9 |        
   26940 |      MASTER-Tavrida |   C |   180 | 17.8 |        
   33141 |          MASTER-IAC |   C |   180 | 18.8 |        
   33141 |          MASTER-IAC |   C |   180 | 18.2 |        
   34983 |          MASTER-IAC |   C |   180 | 18.4 |        
   34983 |          MASTER-IAC |   C |   180 | 18.1 |        
   35623 |          MASTER-IAC |   C |   180 | 18.2 |        
   35623 |          MASTER-IAC |   C |   180 | 17.8 |        
   36785 |          MASTER-IAC |   C |   180 | 17.9 |        
   36785 |          MASTER-IAC |   C |   180 | 17.6 |        
   37329 |          MASTER-IAC |   C |   180 | 17.6 |        
   37329 |          MASTER-IAC |   C |   180 | 17.3 |        
   38351 |          MASTER-IAC |   C |   180 | 17.5 |        
   38351 |          MASTER-IAC |   C |   180 | 16.9 |        
   39143 |          MASTER-IAC |   C |   180 | 17.3 |        
   39143 |          MASTER-IAC |   C |   180 | 16.4 |        
   39268 |         MASTER-OAFA |   C |   180 | 18.0 |        
   40390 |         MASTER-OAFA |   C |   180 | 19.0 |        
   41478 |         MASTER-OAFA |   C |   180 | 19.2 |        
   42561 |         MASTER-OAFA |   C |   180 | 18.8 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4679
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 GRB 210725B ( M. G. Bernardini et al., GCN 30508) errorbox  21999 sec after notice time and 22074 sec after trigger time at 2021-07-25 18:08:42 UT, with upper limit up to  17.8 mag. Observations started at twilight.  The observations began at zenith distance = 60 deg. The sun  altitude  is -13.9 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 210725B errorbox  22581 sec after notice time and 22657 sec after trigger time at 2021-07-25 18:18:25 UT, with upper limit up to  18.7 mag. Observations started at twilight.  The observations began at zenith distance = 56 deg. The sun  altitude  is -10.3 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) was pointed to the SWIFT GRB 210725B errorbox  26312 sec after notice time and 26387 sec after trigger time at 2021-07-25 19:20:35 UT, with upper limit up to  13.1 mag. The observations began at zenith distance = 76 deg. The sun  altitude  is -42.7 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the SWIFT GRB 210725B errorbox  32974 sec after notice time and 33050 sec after trigger time at 2021-07-25 21:11:38 UT, with upper limit up to  18.8 mag. Observations started at twilight.  The observations began at zenith distance = 50 deg. The sun  altitude  is -15.5 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) was pointed to the SWIFT GRB 210725B errorbox  39102 sec after notice time and 39178 sec after trigger time at 2021-07-25 22:53:46 UT, with upper limit up to  19.2 mag. Observations started at twilight.  The observations began at zenith distance = 54 deg. The sun  altitude  is -12.5 deg. 

The galactic latitude b = 80 deg., longitude l = 307 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1669942

We obtain a following upper limits.  

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

   22165 |   MASTER-Kislovodsk |   C |   180 | 17.3 |        
   22165 |   MASTER-Kislovodsk |   C |   180 | 17.6 |        
   22389 |   MASTER-Kislovodsk |   C |   180 | 17.5 |        
   22389 |   MASTER-Kislovodsk |   C |   180 | 17.8 |        
   22747 |      MASTER-Tavrida |   C |   180 | 16.5 |        
   22856 |   MASTER-Kislovodsk |   C |   180 | 16.1 |        
   22856 |   MASTER-Kislovodsk |   C |   180 | 16.1 |        
   24563 |      MASTER-Tavrida |   C |   180 | 18.7 |        
   24563 |      MASTER-Tavrida |   C |   180 | 17.7 |        
   25004 |   MASTER-Kislovodsk |   C |   180 | 15.7 |        
   25004 |   MASTER-Kislovodsk |   C |   180 | 16.6 |        
   26478 |         MASTER-SAAO |   C |   180 | 13.1 |        
   26623 |   MASTER-Kislovodsk |   C |   180 | 14.7 |        
   26623 |   MASTER-Kislovodsk |   C |   180 | 15.9 |        
   26940 |      MASTER-Tavrida |   C |   180 | 17.8 |        
   33141 |          MASTER-IAC |   C |   180 | 18.8 |        
   33141 |          MASTER-IAC |   C |   180 | 18.2 |        
   34983 |          MASTER-IAC |   C |   180 | 18.4 |        
   34983 |          MASTER-IAC |   C |   180 | 18.1 |        
   35623 |          MASTER-IAC |   C |   180 | 18.2 |        
   35623 |          MASTER-IAC |   C |   180 | 17.8 |        
   36785 |          MASTER-IAC |   C |   180 | 17.9 |        
   36785 |          MASTER-IAC |   C |   180 | 17.6 |        
   37329 |          MASTER-IAC |   C |   180 | 17.6 |        
   37329 |          MASTER-IAC |   C |   180 | 17.3 |        
   38351 |          MASTER-IAC |   C |   180 | 17.5 |        
   38351 |          MASTER-IAC |   C |   180 | 16.9 |        
   39143 |          MASTER-IAC |   C |   180 | 17.3 |        
   39143 |          MASTER-IAC |   C |   180 | 16.4 |        
   39268 |         MASTER-OAFA |   C |   180 | 18.0 |        
   40390 |         MASTER-OAFA |   C |   180 | 19.0 |        
   41478 |         MASTER-OAFA |   C |   180 | 19.2 |        
   42561 |         MASTER-OAFA |   C |   180 | 18.8 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4677
TYPE = 35
DAYS = 0


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 210725B ( M. G. Bernardini et al., GCN 30508) errorbox  22581 sec after notice time and 22657 sec after trigger time at 2021-07-25 18:18:25 UT, with upper limit up to  16.5 mag. Observations started at twilight.  The observations began at zenith distance = 56 deg. The sun  altitude  is -10.3 deg. 

The galactic latitude b = 80 deg., longitude l = 307 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1669944

We obtain a following upper limits.  

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

   22747 |      MASTER-Tavrida |   C |   180 | 16.5 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4676
TYPE = 35
DAYS = 0


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 210725B ( M. G. Bernardini et al., GCN 30508) errorbox  22581 sec after notice time and 22657 sec after trigger time at 2021-07-25 18:18:25 UT, with upper limit up to  16.5 mag. Observations started at twilight.  The observations began at zenith distance = 56 deg. The sun  altitude  is -10.3 deg. 

The galactic latitude b = 80 deg., longitude l = 307 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1669944

We obtain a following upper limits.  

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

   22747 |      MASTER-Tavrida |   C |   180 | 16.5 |        
Filter C is a clear (unfiltred) band. 


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



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  ID = 4675
TYPE = 34
DAYS = 0


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 210725B ( M. G. Bernardini et al., GCN 30508) errorbox  22581 sec after notice time and 22657 sec after trigger time at 2021-07-25 18:18:25 UT, with upper limit up to  16.5 mag. Observations started at twilight.  The observations began at zenith distance = 56 deg. The sun  altitude  is -10.3 deg. 

The galactic latitude b = 80 deg., longitude l = 307 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1669944

We obtain a following upper limits.  

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

   22747 |      MASTER-Tavrida |   C |   180 | 16.5 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2025

MASTER Net MASTER Database: GRB210725.50 page

MASTER WFC: Raw | Processing | Search Single sets | Single images SN | Asteroid | Transient | Comet

MASTER II: Raw | Processing | Search by orbit elements | Search SN | Asteroid | Transient | Two tube | Short transient | Tr. difference | Comet | Nova M31 | GRB | GRB_HPX | LIGO Manual control | Planner | Planner Results | Planner NET

General: SN list | Sky map | Add asteroid Meteo | Focus | MASTER page Users list | Users statistic | Logout

Search: proc_data raw_data stars sn lc Moving objects Transients Trans_alert(SWIFT) Short Two tube Tr. difference SN CND Asteroids wide_field Diff Transients + Vis. Gal. Transients + All Gal. GCN Transients.

Amur

Tunka

Kislovodsk

Tavrida

SAAO

IAC

Argentina

Mexico

Ural

Vostryakovo

Amur

Tunka

Kislovodsk

Tavrida

SAAO

IAC

Argentina

Mexico

Ural

Vostryakovo

Amur

Tunka

Kislovodsk

Tavrida

SAAO

IAC

Argentina

Mexico

Ural

Vostryakovo

Amur

Tunka

Kislovodsk

Tavrida

SAAO

IAC

Argentina

Mexico

Ural

Vostryakovo

MASTER WFC:
Raw | Processing | Search
Single sets | Single images
SN | Asteroid | Transient | Comet

MASTER II:
Raw | Processing | Search by orbit elements | Search
SN | Asteroid | Transient | Two tube | Short transient | Tr. difference | Comet | Nova M31 | GRB | GRB_HPX | LIGO
Manual control | Planner | Planner Results | Planner NET

General:
SN list | Sky map | Add asteroid
Meteo | Focus | MASTER page
Users list | Users statistic | Logout

Search: