GRB210422.74 page :: MASTER Database

MASTER Net MASTER Database: GRB210422.74 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 GRB210422.74

Trignum

1044678

Trigger time

2021-04-22 17:47:10

Notice time

2021-04-23 00:11:23.712539

Coord, eb

(01h 24m 33.36s , +42d 06m 36.0s) , 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
1599531	2021-04-23 00:11:23.712539	01^h 24^m 33.36^s +42^d 06^m 36.0^s	SWIFT	0.05	alert	1044678	1	111	alert

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

Synchronous WFC images

Distance	datetime	coord2000	observatory	camera	links
46.2	2021-04-22 17:47:08.492	00^h 00^m 00.00^s +00^d 00^m 00.0^s	Tunka	100628	Database Tunka
46.2	2021-04-22 17:44:50.542	00^h 00^m 00.00^s +00^d 00^m 00.0^s	Tunka	100629	Database Tunka

Errorbox center visibility at MASTER facilities

trigger

notice

notice+1hr

now

2021-04-22 17:47:10 (JD 2459327.241088)

Siderial time 10.361077 h

Ra 01:24:33.36 Dec 42:06:36.00
( 21.139000d, 42.110000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 10.14 Azimuth: 211.66

Sun: Altitude: -20.28 Azimuth: 216.63

Moon: Altitude: 12.40 Azimuth: 99.28

Tunka

Object: Altitude: 5.47 Azimuth: 194.57

Sun: Altitude: -25.19 Azimuth: 191.39

Moon: Altitude: 27.66 Azimuth: 79.58

Kislovodsk

Object: Altitude: 3.33 Azimuth: 150.94

Sun: Altitude: -17.80 Azimuth: 128.19

Moon: Altitude: 61.46 Azimuth: 8.28

Tavrida

Object: Altitude: 7.38 Azimuth: 145.44

Sun: Altitude: -12.24 Azimuth: 121.53

Moon: Altitude: 60.45 Azimuth: 351.35

SAAO

Object: Altitude: -40.40 Azimuth: 120.20

Sun: Altitude: -21.92 Azimuth: 91.02

Moon: Altitude: 39.31 Azimuth: 202.15

IAC

Object: Altitude: 25.45 Azimuth: 125.96

Sun: Altitude: 22.46 Azimuth: 92.31

Moon: Altitude: 37.85 Azimuth: 272.07

Argentina

Object: Altitude: 11.93 Azimuth: 159.63

Sun: Altitude: 42.55 Azimuth: 155.61

Moon: Altitude: -22.95 Azimuth: 265.58

Mexico

Object: Altitude: 74.43 Azimuth: 220.97

Sun: Altitude: 61.78 Azimuth: 306.45

Moon: Altitude: -34.71 Azimuth: 217.39

Ural

Object: Altitude: 11.14 Azimuth: 162.23

Sun: Altitude: -15.45 Azimuth: 146.51

Moon: Altitude: 45.43 Azimuth: 29.66

Vostryakovo

Object: Altitude: 14.87 Azimuth: 146.79

Sun: Altitude: -8.31 Azimuth: 126.30

Moon: Altitude: 50.03 Azimuth: 359.07

Gal. latitude: -20.006906 Gal. longitude: 130.007240

Dist. to Sun: 30.815592

Dist. to Moon: 109.159243

Moon coord.: (156.226201 d, 15.417703 d)

Sun coord.: (30.325893 d, 12.350470 d)

Lunar disk: 0.748472

Lunar phase: 60.201949

Lunar bright limb: 294.378605

No SN in this field

2021-04-23 00:11:23 (JD 2459327.507905)

Siderial time 16.782221 h

Ra 01:24:33.36 Dec 42:06:36.00
( 21.139000d, 42.110000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 61.81 Azimuth: 271.47

Sun: Altitude: 35.10 Azimuth: 295.77

Moon: Altitude: -25.56 Azimuth: 181.98

Tunka

Object: Altitude: 46.75 Azimuth: 256.62

Sun: Altitude: 19.99 Azimuth: 275.26

Moon: Altitude: -21.24 Azimuth: 156.45

Kislovodsk

Object: Altitude: 9.21 Azimuth: 218.27

Sun: Altitude: -19.91 Azimuth: 228.41

Moon: Altitude: 4.85 Azimuth: 104.91

Tavrida

Object: Altitude: 6.46 Azimuth: 213.09

Sun: Altitude: -23.48 Azimuth: 220.46

Moon: Altitude: 11.01 Azimuth: 99.01

SAAO

Object: Altitude: -61.62 Azimuth: 240.22

Sun: Altitude: -60.08 Azimuth: 306.19

Moon: Altitude: 4.54 Azimuth: 109.86

IAC

Object: Altitude: -19.51 Azimuth: 177.22

Sun: Altitude: -47.37 Azimuth: 161.12

Moon: Altitude: 52.17 Azimuth: 75.98

Argentina

Object: Altitude: -44.65 Azimuth: 119.77

Sun: Altitude: -26.99 Azimuth: 88.20

Moon: Altitude: 41.91 Azimuth: 199.67

Mexico

Object: Altitude: 25.33 Azimuth: 125.52

Sun: Altitude: 20.70 Azimuth: 92.36

Moon: Altitude: 36.15 Azimuth: 275.03

Ural

Object: Altitude: 26.19 Azimuth: 232.05

Sun: Altitude: -3.43 Azimuth: 240.72

Moon: Altitude: -0.54 Azimuth: 117.53

Vostryakovo

Object: Altitude: 16.58 Azimuth: 216.85

Sun: Altitude: -13.84 Azimuth: 221.64

Moon: Altitude: 10.35 Azimuth: 99.87

Gal. latitude: -20.006906 Gal. longitude: 130.007240

Dist. to Sun: 30.786136

Dist. to Moon: 112.119431

Moon coord.: (159.759686 d, 14.099034 d)

Sun coord.: (30.576063 d, 12.439692 d)

Lunar disk: 0.773713

Lunar phase: 56.809391

Lunar bright limb: 295.393769

No SN in this field

2021-04-23 01:11:23 (JD 2459327.549572)

Siderial time 17.784959 h

Ra 01:24:33.36 Dec 42:06:36.00
( 21.139000d, 42.110000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 71.28 Azimuth: 286.54

Sun: Altitude: 43.08 Azimuth: 311.66

Moon: Altitude: -24.21 Azimuth: 197.41

Tunka

Object: Altitude: 55.94 Azimuth: 266.78

Sun: Altitude: 29.07 Azimuth: 287.92

Moon: Altitude: -23.93 Azimuth: 171.41

Kislovodsk

Object: Altitude: 16.57 Azimuth: 226.87

Sun: Altitude: -11.08 Azimuth: 240.55

Moon: Altitude: -5.14 Azimuth: 114.81

Tavrida

Object: Altitude: 12.99 Azimuth: 222.26

Sun: Altitude: -15.66 Azimuth: 233.63

Moon: Altitude: 0.88 Azimuth: 108.82

SAAO

Object: Altitude: -50.49 Azimuth: 241.38

Sun: Altitude: -48.86 Azimuth: 289.75

Moon: Altitude: -7.10 Azimuth: 101.97

IAC

Object: Altitude: -18.79 Azimuth: 188.99

Sun: Altitude: -49.20 Azimuth: 183.04

Moon: Altitude: 39.50 Azimuth: 84.80

Argentina

Object: Altitude: -55.79 Azimuth: 119.42

Sun: Altitude: -39.67 Azimuth: 79.37

Moon: Altitude: 44.31 Azimuth: 180.65

Mexico

Object: Altitude: 15.16 Azimuth: 130.38

Sun: Altitude: 7.94 Azimuth: 99.80

Moon: Altitude: 48.27 Azimuth: 284.73

Ural

Object: Altitude: 33.05 Azimuth: 242.16

Sun: Altitude: 4.08 Azimuth: 253.31

Moon: Altitude: -7.27 Azimuth: 129.91

Vostryakovo

Object: Altitude: 22.29 Azimuth: 227.01

Sun: Altitude: -7.47 Azimuth: 235.07

Moon: Altitude: 2.26 Azimuth: 111.45

Gal. latitude: -20.006906 Gal. longitude: 130.007240

Dist. to Sun: 30.781712

Dist. to Moon: 112.581290

Moon coord.: (160.310606 d, 13.887229 d)

Sun coord.: (30.615143 d, 12.453604 d)

Lunar disk: 0.777592

Lunar phase: 56.276568

Lunar bright limb: 295.547039

No SN in this field

2024-12-25 02:43:01 (JD 2460669.613206)

Siderial time 11.498947 h

Ra 01:24:33.36 Dec 42:06:36.00
( 21.139000d, 42.110000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 16.73 Azimuth: 222.76

Sun: Altitude: 15.59 Azimuth: 349.14

Moon: Altitude: 9.45 Azimuth: 57.20

Tunka

Object: Altitude: 9.19 Azimuth: 206.75

Sun: Altitude: 8.51 Azimuth: 327.10

Moon: Altitude: 19.48 Azimuth: 35.07

Kislovodsk

Object: Altitude: -1.54 Azimuth: 162.61

Sun: Altitude: -20.38 Azimuth: 283.36

Moon: Altitude: 28.74 Azimuth: 329.79

Tavrida

Object: Altitude: 1.50 Azimuth: 156.67

Sun: Altitude: -26.54 Azimuth: 277.47

Moon: Altitude: 24.50 Azimuth: 321.60

SAAO

Object: Altitude: -52.99 Azimuth: 118.54

Sun: Altitude: -8.75 Azimuth: 304.99

Moon: Altitude: 41.37 Azimuth: 257.33

IAC

Object: Altitude: 13.64 Azimuth: 130.77

Sun: Altitude: -67.37 Azimuth: 263.15

Moon: Altitude: -2.30 Azimuth: 282.86

Argentina

Object: Altitude: 5.57 Azimuth: 148.57

Sun: Altitude: -28.55 Azimuth: 29.61

Moon: Altitude: -30.69 Azimuth: 311.45

Mexico

Object: Altitude: 78.62 Azimuth: 167.33

Sun: Altitude: -28.89 Azimuth: 78.62

Moon: Altitude: -71.35 Azimuth: 180.73

Ural

Object: Altitude: 9.31 Azimuth: 174.94

Sun: Altitude: -13.94 Azimuth: 291.67

Moon: Altitude: 20.08 Azimuth: 349.77

Vostryakovo

Object: Altitude: 10.45 Azimuth: 158.93

Sun: Altitude: -25.28 Azimuth: 275.11

Moon: Altitude: 17.21 Azimuth: 327.64

Gal. latitude: -20.006906 Gal. longitude: 130.007240

Dist. to Sun: 118.015562

Dist. to Moon: 150.175449

Moon coord.: (204.243380 d, -12.408165 d)

Sun coord.: (273.758011 d, -23.401821 d)

Lunar disk: 0.301586

Lunar phase: 113.380082

Lunar bright limb: 110.380579

No SN in this field

Recent coverage and limits telegrams

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

  ID = 4131
TYPE = 35
DAYS = 1


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 GRB210422.74 (trigger No 1044678,01h 24m 33.36s , +42d 06m 36.0s, R=0.05) errorbox  39 sec after notice time and 23084 sec after trigger time at 2021-04-23 00:11:54 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 84 deg. The sun  altitude  is -24.0 deg. 

The galactic latitude b = -20 deg., longitude l = 130 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1599524

We obtain a following upper limits.  

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

   23175 |      MASTER-Tavrida |   C |   180 | 16.2 |        
   23355 |      MASTER-Tavrida |   C |   540 | 16.7 |  Coadd 
   23985 |      MASTER-Tavrida |   C |  1800 | 17.4 |  Coadd 
   23374 |      MASTER-Tavrida |   C |   180 | 16.3 |        
   23574 |      MASTER-Tavrida |   C |   180 | 16.3 |        
   23773 |      MASTER-Tavrida |   C |   180 | 16.6 |        
   23953 |      MASTER-Tavrida |   C |   540 | 17.1 |  Coadd 
   23973 |      MASTER-Tavrida |   C |   180 | 16.7 |        
   24172 |      MASTER-Tavrida |   C |   180 | 17.0 |        
   24372 |      MASTER-Tavrida |   C |   180 | 17.2 |        
   24552 |      MASTER-Tavrida |   C |   540 | 17.5 |  Coadd 
   24572 |      MASTER-Tavrida |   C |   180 | 17.2 |        
   24771 |      MASTER-Tavrida |   C |   180 | 17.2 |        
   24970 |      MASTER-Tavrida |   C |   180 | 17.0 |        
   25150 |      MASTER-Tavrida |   C |   540 | 17.5 |  Coadd 
   25170 |      MASTER-Tavrida |   C |   180 | 17.0 |        
   25980 |      MASTER-Tavrida |   C |  1800 | 18.5 |  Coadd 
   25370 |      MASTER-Tavrida |   C |   180 | 17.1 |        
   25570 |      MASTER-Tavrida |   C |   180 | 17.4 |        
   25750 |      MASTER-Tavrida |   C |   540 | 17.9 |  Coadd 
   25770 |      MASTER-Tavrida |   C |   180 | 17.6 |        
   25969 |      MASTER-Tavrida |   C |   180 | 17.8 |        
   26169 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26349 |      MASTER-Tavrida |   C |   540 | 18.4 |  Coadd 
   26368 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26568 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26767 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26947 |      MASTER-Tavrida |   C |   540 | 18.5 |  Coadd 
   26966 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   27166 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   27365 |      MASTER-Tavrida |   C |   180 | 17.6 |        
   27545 |      MASTER-Tavrida |   C |   540 | 18.2 |  Coadd 
   27802 |      MASTER-Tavrida |   C |   180 | 17.7 |        
   28002 |      MASTER-Tavrida |   C |   180 | 17.5 |        
   28201 |      MASTER-Tavrida |   C |   180 | 17.0 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4129
TYPE = 35
DAYS = 0.5


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 GRB210422.74 (trigger No 1044678,01h 24m 33.36s , +42d 06m 36.0s, R=0.05) errorbox  39 sec after notice time and 23084 sec after trigger time at 2021-04-23 00:11:54 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 84 deg. The sun  altitude  is -24.0 deg. 

The galactic latitude b = -20 deg., longitude l = 130 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1599524

We obtain a following upper limits.  

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

   23175 |      MASTER-Tavrida |   C |   180 | 16.2 |        
   23355 |      MASTER-Tavrida |   C |   540 | 16.7 |  Coadd 
   23985 |      MASTER-Tavrida |   C |  1800 | 17.4 |  Coadd 
   23374 |      MASTER-Tavrida |   C |   180 | 16.3 |        
   23574 |      MASTER-Tavrida |   C |   180 | 16.3 |        
   23773 |      MASTER-Tavrida |   C |   180 | 16.6 |        
   23953 |      MASTER-Tavrida |   C |   540 | 17.1 |  Coadd 
   23973 |      MASTER-Tavrida |   C |   180 | 16.7 |        
   24172 |      MASTER-Tavrida |   C |   180 | 17.0 |        
   24372 |      MASTER-Tavrida |   C |   180 | 17.2 |        
   24552 |      MASTER-Tavrida |   C |   540 | 17.5 |  Coadd 
   24572 |      MASTER-Tavrida |   C |   180 | 17.2 |        
   24771 |      MASTER-Tavrida |   C |   180 | 17.2 |        
   24970 |      MASTER-Tavrida |   C |   180 | 17.0 |        
   25150 |      MASTER-Tavrida |   C |   540 | 17.5 |  Coadd 
   25170 |      MASTER-Tavrida |   C |   180 | 17.0 |        
   25980 |      MASTER-Tavrida |   C |  1800 | 18.5 |  Coadd 
   25370 |      MASTER-Tavrida |   C |   180 | 17.1 |        
   25570 |      MASTER-Tavrida |   C |   180 | 17.4 |        
   25750 |      MASTER-Tavrida |   C |   540 | 17.9 |  Coadd 
   25770 |      MASTER-Tavrida |   C |   180 | 17.6 |        
   25969 |      MASTER-Tavrida |   C |   180 | 17.8 |        
   26169 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26349 |      MASTER-Tavrida |   C |   540 | 18.4 |  Coadd 
   26368 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26568 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26767 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   26947 |      MASTER-Tavrida |   C |   540 | 18.5 |  Coadd 
   26966 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   27166 |      MASTER-Tavrida |   C |   180 | 17.9 |        
   27365 |      MASTER-Tavrida |   C |   180 | 17.6 |        
   27545 |      MASTER-Tavrida |   C |   540 | 18.2 |  Coadd 
   27802 |      MASTER-Tavrida |   C |   180 | 17.7 |        
   28002 |      MASTER-Tavrida |   C |   180 | 17.5 |        
   28201 |      MASTER-Tavrida |   C |   180 | 17.0 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4127
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 GRB210422.74 (trigger No 1044678,01h 24m 33.36s , +42d 06m 36.0s, R=0.05) errorbox  39 sec after notice time and 23084 sec after trigger time at 2021-04-23 00:11:54 UT, with upper limit up to  16.3 mag. The observations began at zenith distance = 84 deg. The sun  altitude  is -24.0 deg. 

The galactic latitude b = -20 deg., longitude l = 130 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1599524

We obtain a following upper limits.  

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

   23175 |      MASTER-Tavrida |   C |   180 | 16.2 |        
   23374 |      MASTER-Tavrida |   C |   180 | 16.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4126
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 GRB210422.74 (trigger No 1044678,01h 24m 33.36s , +42d 06m 36.0s, R=0.05) errorbox  39 sec after notice time and 23084 sec after trigger time at 2021-04-23 00:11:54 UT, with upper limit up to  16.3 mag. The observations began at zenith distance = 84 deg. The sun  altitude  is -24.0 deg. 

The galactic latitude b = -20 deg., longitude l = 130 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1599524

We obtain a following upper limits.  

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

   23175 |      MASTER-Tavrida |   C |   180 | 16.2 |        
   23374 |      MASTER-Tavrida |   C |   180 | 16.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 4125
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 GRB210422.74 (trigger No 1044678,01h 24m 33.36s , +42d 06m 36.0s, R=0.05) errorbox  39 sec after notice time and 23084 sec after trigger time at 2021-04-23 00:11:54 UT, with upper limit up to  16.3 mag. The observations began at zenith distance = 84 deg. The sun  altitude  is -24.0 deg. 

The galactic latitude b = -20 deg., longitude l = 130 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1599524

We obtain a following upper limits.  

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

   23175 |      MASTER-Tavrida |   C |   180 | 16.2 |        
   23374 |      MASTER-Tavrida |   C |   180 | 16.3 |        
Filter C is a clear (unfiltred) band. 


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

MASTER, 2002-2024

MASTER Net MASTER Database: GRB210422.74 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: