MASTER Net MASTER Database: GRB200428.61 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 INTEGRAL GRB200428.61
Trignum 8611
Trigger time 2020-04-28 14:34:23.41
Notice time 2020-04-28 14:34:30.748618
Coord, eb (19h 34m 58.38s , +21d 53m 53.7s) , 0.0458333
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
1346002 2020-04-28 14:34:31.708768 19h 34m 58.38s +21d 53m 53.7s INTEGRAL 0.0458333 alert 8611 35746 53 alert

DAYS:

MASTER optical transients in this field
MASTER OT (J2000.0) Сoordinates Datetime Published Mag Site Image
J193522.07+215851.5 (19h 35m 22.07s , +21d 58m 51.5s) 2020-04-28 14:35:09.6 AT2020ili on 2020-04-29 09:30:06.078524 12.884 Amur Transient on Amur

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

2020-04-28 14:34:23 (JD 2458968.107211)

Siderial time 7.549398 h

Ra 19:34:58.38 Dec 21:53:53.70
(293.743250d, 21.898250d)

Rise 2020-04-29 18:01:44

Transit 2020-04-29 02:34:25

Set 2020-04-29 11:03:11

Amur

Object: Altitude: 16.29 Azimuth: 255.15

Sun: Altitude: -24.35 Azimuth: 166.16

Moon: Altitude: 11.52 Azimuth: 113.80

Tunka

Object: Altitude: 2.88 Azimuth: 237.31

Sun: Altitude: -16.33 Azimuth: 142.16

Moon: Altitude: 26.67 Azimuth: 95.55

Kislovodsk

Object: Altitude: -24.23 Azimuth: 184.48

Sun: Altitude: 15.55 Azimuth: 95.13

Moon: Altitude: 66.18 Azimuth: 39.12

Tavrida

Object: Altitude: -23.27 Azimuth: 175.86

Sun: Altitude: 21.67 Azimuth: 88.93

Moon: Altitude: 68.31 Azimuth: 19.32

SAAO

Object: Altitude: -71.41 Azimuth: 59.99

Sun: Altitude: 15.81 Azimuth: 118.96

Moon: Altitude: 33.41 Azimuth: 186.04

IAC

Object: Altitude: -17.22 Azimuth: 127.62

Sun: Altitude: 64.50 Azimuth: 61.59

Moon: Altitude: 51.49 Azimuth: 266.32

Argentina

Object: Altitude: 2.29 Azimuth: 117.64

Sun: Altitude: 35.73 Azimuth: 216.39

Moon: Altitude: -16.89 Azimuth: 251.87

Mexico

Object: Altitude: 60.48 Azimuth: 79.64

Sun: Altitude: 23.56 Azimuth: 266.98

Moon: Altitude: -21.12 Azimuth: 222.20

Ural

Object: Altitude: -9.04 Azimuth: 200.07

Sun: Altitude: 7.16 Azimuth: 105.35

Moon: Altitude: 49.18 Azimuth: 49.97

Vostryakovo

Object: Altitude: -12.72 Azimuth: 179.70

Sun: Altitude: 18.94 Azimuth: 87.92

Moon: Altitude: 57.46 Azimuth: 19.76

Gal. latitude: 0.429730 Gal. longitude: 57.595584

Dist. to Sun: 95.746460

Dist. to Moon: 132.726282

Moon coord.: (101.951698 d, 23.963755 d)

Sun coord.: (36.105704 d, 14.334284 d)

Lunar disk: 0.269596

Lunar phase: 117.439323

Lunar bright limb: 274.244285

No SN in this field

2020-04-28 14:34:30 (JD 2458968.107292)

Siderial time 7.551347 h

Ra 19:34:58.38 Dec 21:53:53.70
(293.743250d, 21.898250d)

Rise 2020-04-29 18:01:44

Transit 2020-04-29 02:34:25

Set 2020-04-29 11:03:11

Amur

Object: Altitude: 16.30 Azimuth: 255.17

Sun: Altitude: -24.35 Azimuth: 166.19

Moon: Altitude: 11.50 Azimuth: 113.82

Tunka

Object: Altitude: 2.89 Azimuth: 237.33

Sun: Altitude: -16.34 Azimuth: 142.19

Moon: Altitude: 26.65 Azimuth: 95.57

Kislovodsk

Object: Altitude: -24.23 Azimuth: 184.51

Sun: Altitude: 15.53 Azimuth: 95.15

Moon: Altitude: 66.16 Azimuth: 39.18

Tavrida

Object: Altitude: -23.27 Azimuth: 175.88

Sun: Altitude: 21.65 Azimuth: 88.95

Moon: Altitude: 68.30 Azimuth: 19.38

SAAO

Object: Altitude: -71.43 Azimuth: 59.94

Sun: Altitude: 15.79 Azimuth: 118.95

Moon: Altitude: 33.41 Azimuth: 186.01

IAC

Object: Altitude: -17.24 Azimuth: 127.64

Sun: Altitude: 64.48 Azimuth: 61.63

Moon: Altitude: 51.52 Azimuth: 266.33

Argentina

Object: Altitude: 2.26 Azimuth: 117.63

Sun: Altitude: 35.75 Azimuth: 216.36

Moon: Altitude: -16.87 Azimuth: 251.86

Mexico

Object: Altitude: 60.45 Azimuth: 79.67

Sun: Altitude: 23.59 Azimuth: 266.99

Moon: Altitude: -21.11 Azimuth: 222.22

Ural

Object: Altitude: -9.03 Azimuth: 200.09

Sun: Altitude: 7.15 Azimuth: 105.38

Moon: Altitude: 49.17 Azimuth: 50.00

Vostryakovo

Object: Altitude: -12.72 Azimuth: 179.73

Sun: Altitude: 18.92 Azimuth: 87.95

Moon: Altitude: 57.45 Azimuth: 19.81

Gal. latitude: 0.429730 Gal. longitude: 57.595584

Dist. to Sun: 95.746518

Dist. to Moon: 132.726547

Moon coord.: (101.952841 d, 23.963761 d)

Sun coord.: (36.105781 d, 14.334309 d)

Lunar disk: 0.269603

Lunar phase: 117.438359

Lunar bright limb: 274.244704

No SN in this field

2020-04-28 15:34:30 (JD 2458968.148958)

Siderial time 8.554085 h

Ra 19:34:58.38 Dec 21:53:53.70
(293.743250d, 21.898250d)

Rise 2020-04-29 18:01:44

Transit 2020-04-29 02:34:25

Set 2020-04-29 11:03:11

Amur

Object: Altitude: 25.77 Azimuth: 266.17

Sun: Altitude: -25.31 Azimuth: 182.18

Moon: Altitude: 3.45 Azimuth: 124.38

Tunka

Object: Altitude: 11.17 Azimuth: 248.66

Sun: Altitude: -21.04 Azimuth: 156.71

Moon: Altitude: 17.89 Azimuth: 106.26

Kislovodsk

Object: Altitude: -21.97 Azimuth: 199.48

Sun: Altitude: 4.89 Azimuth: 105.21

Moon: Altitude: 58.06 Azimuth: 61.80

Tavrida

Object: Altitude: -22.62 Azimuth: 191.02

Sun: Altitude: 11.05 Azimuth: 99.32

Moon: Altitude: 62.51 Azimuth: 48.32

SAAO

Object: Altitude: -79.33 Azimuth: 11.29

Sun: Altitude: 4.25 Azimuth: 109.96

Moon: Altitude: 33.01 Azimuth: 170.23

IAC

Object: Altitude: -26.94 Azimuth: 138.48

Sun: Altitude: 52.12 Azimuth: 76.48

Moon: Altitude: 64.24 Azimuth: 273.11

Argentina

Object: Altitude: -9.43 Azimuth: 109.99

Sun: Altitude: 41.72 Azimuth: 199.34

Moon: Altitude: -5.45 Azimuth: 245.10

Mexico

Object: Altitude: 47.64 Azimuth: 89.19

Sun: Altitude: 36.43 Azimuth: 274.87

Moon: Altitude: -12.01 Azimuth: 232.21

Ural

Object: Altitude: -5.33 Azimuth: 213.65

Sun: Altitude: -0.42 Azimuth: 117.81

Moon: Altitude: 42.49 Azimuth: 66.41

Vostryakovo

Object: Altitude: -11.70 Azimuth: 193.97

Sun: Altitude: 10.44 Azimuth: 100.17

Moon: Altitude: 53.23 Azimuth: 41.93

Gal. latitude: 0.429730 Gal. longitude: 57.595584

Dist. to Sun: 95.776073

Dist. to Moon: 132.860276

Moon coord.: (102.541130 d, 23.965561 d)

Sun coord.: (36.145355 d, 14.347316 d)

Lunar disk: 0.273451

Lunar phase: 116.942601

Lunar bright limb: 274.460825

No SN in this field

2024-04-29 08:21:36 (JD 2460429.848333)

Siderial time 1.387095 h

Ra 19:34:58.38 Dec 21:53:53.70
(293.743250d, 21.898250d)

Rise 2024-04-29 18:01:36

Transit 2024-04-29 02:34:18

Set 2024-04-29 11:03:04

Amur

Object: Altitude: -17.73 Azimuth: 177.01

Sun: Altitude: 21.40 Azimuth: 87.16

Moon: Altitude: -67.17 Azimuth: 195.79

Tunka

Object: Altitude: -12.46 Azimuth: 153.99

Sun: Altitude: 35.90 Azimuth: 65.27

Moon: Altitude: -62.89 Azimuth: 144.30

Kislovodsk

Object: Altitude: 13.58 Azimuth: 107.45

Sun: Altitude: 59.32 Azimuth: 338.64

Moon: Altitude: -27.20 Azimuth: 76.06

Tavrida

Object: Altitude: 19.73 Azimuth: 101.68

Sun: Altitude: 55.57 Azimuth: 325.01

Moon: Altitude: -21.63 Azimuth: 71.33

SAAO

Object: Altitude: 3.73 Azimuth: 118.94

Sun: Altitude: 33.55 Azimuth: 218.96

Moon: Altitude: 22.27 Azimuth: 69.95

IAC

Object: Altitude: 59.60 Azimuth: 85.38

Sun: Altitude: 24.16 Azimuth: 265.91

Moon: Altitude: 20.24 Azimuth: 39.78

Argentina

Object: Altitude: 33.03 Azimuth: 202.11

Sun: Altitude: -35.42 Azimuth: 274.47

Moon: Altitude: 80.63 Azimuth: 249.22

Mexico

Object: Altitude: 35.34 Azimuth: 263.87

Sun: Altitude: -41.86 Azimuth: 201.02

Moon: Altitude: 13.46 Azimuth: 315.18

Ural

Object: Altitude: 8.55 Azimuth: 117.47

Sun: Altitude: 47.28 Azimuth: 8.50

Moon: Altitude: -38.85 Azimuth: 97.52

Vostryakovo

Object: Altitude: 19.40 Azimuth: 100.71

Sun: Altitude: 47.39 Azimuth: 337.12

Moon: Altitude: -26.76 Azimuth: 78.60

Gal. latitude: 0.429730 Gal. longitude: 57.595584

Dist. to Sun: 96.248687

Dist. to Moon: 50.902926

Moon coord.: (283.797799 d, -28.090587 d)

Sun coord.: (36.780441 d, 14.557426 d)

Lunar disk: 0.726875

Lunar phase: 63.015419

Lunar bright limb: 87.152235

No SN in this field
Recent coverage and limits telegrams

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

  ID = 2575
TYPE = 35
DAYS = 1


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the INTEGRAL GRB200428.61 (trigger No 8611,19h 34m 58.38s , +21d 53m 53.7s, R=0.0458333) errorbox  15 sec after notice time and 23 sec after trigger time at 2020-04-28 14:34:46 UT, with upper limit up to  16.2 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -24.6 deg. 

MASTER-Tunka robotic telescope  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the INTEGRAL GRB200428.61 errorbox  357 sec after notice time and 365 sec after trigger time at 2020-04-28 14:40:28 UT, with upper limit up to  15.0 mag. The observations began at zenith distance = 87 deg. The sun  altitude  is -17.5 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the INTEGRAL GRB200428.61 errorbox  48924 sec after notice time and 48931 sec after trigger time at 2020-04-29 04:09:55 UT, with upper limit up to  18.2 mag. The observations began at zenith distance = 27 deg. The sun  altitude  is -27.4 deg. 

The galactic latitude b =  0 deg., longitude l = 58 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1345998

We obtain a following upper limits.  

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

      28 |         MASTER-Amur |  P/ |    10 | 14.5 |        
      51 |         MASTER-Amur |  P/ |    10 | 14.7 |        
      75 |         MASTER-Amur |  P/ |    10 | 14.5 |        
     107 |         MASTER-Amur |  P/ |    20 | 14.6 |        
     144 |         MASTER-Amur |  P/ |    30 | 15.6 |        
     186 |         MASTER-Amur |  P/ |    30 | 15.5 |        
     232 |         MASTER-Amur |  P/ |    40 | 15.7 |        
     293 |         MASTER-Amur |  P/ |    50 | 15.8 |        
     359 |         MASTER-Amur |  P/ |    60 | 14.9 |        
     400 |        MASTER-Tunka |  P| |    70 | 12.5 |        
     439 |         MASTER-Amur |  P/ |    60 | 14.9 |        
     500 |        MASTER-Tunka |  P| |    90 | 12.6 |        
     519 |         MASTER-Amur |  P/ |    60 | 15.1 |        
     620 |        MASTER-Tunka |  P| |   110 | 12.3 |        
     599 |         MASTER-Amur |  P/ |    60 | 15.0 |        
     678 |         MASTER-Amur |  P/ |    60 | 15.5 |        
     758 |         MASTER-Amur |  P/ |    60 | 15.4 |        
     838 |         MASTER-Amur |  P/ |    60 | 15.3 |        
     918 |         MASTER-Amur |  P/ |    60 | 15.4 |        
     998 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1078 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1158 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1237 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1333 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    1317 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1397 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    1533 |        MASTER-Tunka |  P| |   180 | 13.0 |        
    1476 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1556 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    1636 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    1732 |        MASTER-Tunka |  P| |   180 | 14.1 |        
    1715 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    1795 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    1932 |        MASTER-Tunka |  P| |   180 | 14.4 |        
    1874 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    1954 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2034 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2132 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    2114 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    2193 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    2332 |        MASTER-Tunka |  P| |   180 | 14.7 |        
    2273 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    2353 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2432 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2531 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    2512 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2592 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2731 |        MASTER-Tunka |  P| |   180 | 14.6 |        
    2672 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2751 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    2831 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    2931 |        MASTER-Tunka |  P| |   180 | 14.3 |        
    2910 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2990 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    3069 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3130 |        MASTER-Tunka |  P| |   180 | 14.2 |        
    3149 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    3228 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3330 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    3308 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3387 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3467 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3529 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3546 |         MASTER-Amur |  P/ |    60 | 16.0 |        
    3626 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    3729 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3705 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3784 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    3865 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    3929 |        MASTER-Tunka |  P| |   180 | 15.0 |        
    3945 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4024 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    4128 |        MASTER-Tunka |  P| |   180 | 13.6 |        
    4104 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    4183 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    4263 |         MASTER-Amur |  P/ |    60 | 16.3 |        
    4328 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    4342 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4422 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4528 |        MASTER-Tunka |  P| |   180 | 13.7 |        
   49022 |          MASTER-IAC |   C |   180 | 17.3 |        
   50829 |          MASTER-IAC |   C |   180 | 18.1 |        
   52641 |          MASTER-IAC |   C |   180 | 18.2 |        
   54463 |          MASTER-IAC |   C |   180 | 17.3 |        
   85439 |         MASTER-Amur |   C |   180 | 12.8 |        
   85838 |         MASTER-Amur |   C |   180 | 13.0 |        
   86038 |         MASTER-Amur |   C |   180 | 13.2 |        
   86238 |         MASTER-Amur |   C |   180 | 14.6 |        
   86438 |         MASTER-Amur |   C |   180 | 15.6 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 2554
TYPE = 35
DAYS = 0


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the INTEGRAL GRB200428.61 (trigger No 8611,19h 34m 58.38s , +21d 53m 53.7s, R=0.0458333) errorbox  15 sec after notice time and 23 sec after trigger time at 2020-04-28 14:34:46 UT, with upper limit up to  16.2 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -24.6 deg. 

MASTER-Tunka robotic telescope  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the INTEGRAL GRB200428.61 errorbox  357 sec after notice time and 365 sec after trigger time at 2020-04-28 14:40:28 UT, with upper limit up to  15.0 mag. The observations began at zenith distance = 87 deg. The sun  altitude  is -17.5 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the INTEGRAL GRB200428.61 errorbox  48924 sec after notice time and 48931 sec after trigger time at 2020-04-29 04:09:55 UT, with upper limit up to  18.2 mag. The observations began at zenith distance = 27 deg. The sun  altitude  is -27.4 deg. 

The galactic latitude b =  0 deg., longitude l = 58 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1345998

We obtain a following upper limits.  

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

      28 |         MASTER-Amur |  P/ |    10 | 14.5 |        
      51 |         MASTER-Amur |  P/ |    10 | 14.7 |        
      75 |         MASTER-Amur |  P/ |    10 | 14.5 |        
     107 |         MASTER-Amur |  P/ |    20 | 14.6 |        
     144 |         MASTER-Amur |  P/ |    30 | 15.6 |        
     186 |         MASTER-Amur |  P/ |    30 | 15.5 |        
     232 |         MASTER-Amur |  P/ |    40 | 15.7 |        
     293 |         MASTER-Amur |  P/ |    50 | 15.8 |        
     359 |         MASTER-Amur |  P/ |    60 | 14.9 |        
     400 |        MASTER-Tunka |  P| |    70 | 12.5 |        
     439 |         MASTER-Amur |  P/ |    60 | 14.9 |        
     500 |        MASTER-Tunka |  P| |    90 | 12.6 |        
     519 |         MASTER-Amur |  P/ |    60 | 15.1 |        
     620 |        MASTER-Tunka |  P| |   110 | 12.3 |        
     599 |         MASTER-Amur |  P/ |    60 | 15.0 |        
     678 |         MASTER-Amur |  P/ |    60 | 15.5 |        
     758 |         MASTER-Amur |  P/ |    60 | 15.4 |        
     838 |         MASTER-Amur |  P/ |    60 | 15.3 |        
     918 |         MASTER-Amur |  P/ |    60 | 15.4 |        
     998 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1078 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1158 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1237 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1333 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    1317 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1397 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    1533 |        MASTER-Tunka |  P| |   180 | 13.0 |        
    1476 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1556 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    1636 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    1732 |        MASTER-Tunka |  P| |   180 | 14.1 |        
    1715 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    1795 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    1932 |        MASTER-Tunka |  P| |   180 | 14.4 |        
    1874 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    1954 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2034 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2132 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    2114 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    2193 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    2332 |        MASTER-Tunka |  P| |   180 | 14.7 |        
    2273 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    2353 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2432 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2531 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    2512 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2592 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2731 |        MASTER-Tunka |  P| |   180 | 14.6 |        
    2672 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2751 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    2831 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    2931 |        MASTER-Tunka |  P| |   180 | 14.3 |        
    2910 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2990 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    3069 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3130 |        MASTER-Tunka |  P| |   180 | 14.2 |        
    3149 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    3228 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3330 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    3308 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3387 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3467 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3529 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3546 |         MASTER-Amur |  P/ |    60 | 16.0 |        
    3626 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    3729 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3705 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3784 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    3865 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    3929 |        MASTER-Tunka |  P| |   180 | 15.0 |        
    3945 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4024 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    4128 |        MASTER-Tunka |  P| |   180 | 13.6 |        
    4104 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    4183 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    4263 |         MASTER-Amur |  P/ |    60 | 16.3 |        
    4328 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    4342 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4422 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4528 |        MASTER-Tunka |  P| |   180 | 13.7 |        
   49022 |          MASTER-IAC |   C |   180 | 17.3 |        
   50829 |          MASTER-IAC |   C |   180 | 18.1 |        
   52641 |          MASTER-IAC |   C |   180 | 18.2 |        
   54463 |          MASTER-IAC |   C |   180 | 17.3 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 2550
TYPE = 35
DAYS = 0.5


MASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the INTEGRAL GRB200428.61 (trigger No 8611,19h 34m 58.38s , +21d 53m 53.7s, R=0.0458333) errorbox  15 sec after notice time and 23 sec after trigger time at 2020-04-28 14:34:46 UT, with upper limit up to  16.2 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -24.6 deg. 

MASTER-Tunka robotic telescope  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the INTEGRAL GRB200428.61 errorbox  357 sec after notice time and 365 sec after trigger time at 2020-04-28 14:40:28 UT, with upper limit up to  15.0 mag. The observations began at zenith distance = 87 deg. The sun  altitude  is -17.5 deg. 

The galactic latitude b =  0 deg., longitude l = 58 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1345998

We obtain a following upper limits.  

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

      28 |         MASTER-Amur |  P/ |    10 | 14.5 |        
      51 |         MASTER-Amur |  P/ |    10 | 14.7 |        
      75 |         MASTER-Amur |  P/ |    10 | 14.5 |        
     107 |         MASTER-Amur |  P/ |    20 | 14.6 |        
     144 |         MASTER-Amur |  P/ |    30 | 15.6 |        
     186 |         MASTER-Amur |  P/ |    30 | 15.5 |        
     232 |         MASTER-Amur |  P/ |    40 | 15.7 |        
     293 |         MASTER-Amur |  P/ |    50 | 15.8 |        
     359 |         MASTER-Amur |  P/ |    60 | 14.9 |        
     400 |        MASTER-Tunka |  P| |    70 | 12.5 |        
     439 |         MASTER-Amur |  P/ |    60 | 14.9 |        
     500 |        MASTER-Tunka |  P| |    90 | 12.6 |        
     519 |         MASTER-Amur |  P/ |    60 | 15.1 |        
     620 |        MASTER-Tunka |  P| |   110 | 12.3 |        
     599 |         MASTER-Amur |  P/ |    60 | 15.0 |        
     678 |         MASTER-Amur |  P/ |    60 | 15.5 |        
     758 |         MASTER-Amur |  P/ |    60 | 15.4 |        
     838 |         MASTER-Amur |  P/ |    60 | 15.3 |        
     918 |         MASTER-Amur |  P/ |    60 | 15.4 |        
     998 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1078 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1158 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1237 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1333 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    1317 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    1397 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    1533 |        MASTER-Tunka |  P| |   180 | 13.0 |        
    1476 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    1556 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    1636 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    1732 |        MASTER-Tunka |  P| |   180 | 14.1 |        
    1715 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    1795 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    1932 |        MASTER-Tunka |  P| |   180 | 14.4 |        
    1874 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    1954 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2034 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2132 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    2114 |         MASTER-Amur |  P/ |    60 | 15.5 |        
    2193 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    2332 |        MASTER-Tunka |  P| |   180 | 14.7 |        
    2273 |         MASTER-Amur |  P/ |    60 | 15.4 |        
    2353 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2432 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2531 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    2512 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2592 |         MASTER-Amur |  P/ |    60 | 15.6 |        
    2731 |        MASTER-Tunka |  P| |   180 | 14.6 |        
    2672 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2751 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    2831 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    2931 |        MASTER-Tunka |  P| |   180 | 14.3 |        
    2910 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    2990 |         MASTER-Amur |  P/ |    60 | 15.7 |        
    3069 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3130 |        MASTER-Tunka |  P| |   180 | 14.2 |        
    3149 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    3228 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3330 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    3308 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3387 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3467 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3529 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3546 |         MASTER-Amur |  P/ |    60 | 16.0 |        
    3626 |         MASTER-Amur |  P/ |    60 | 15.8 |        
    3729 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3705 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    3784 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    3865 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    3929 |        MASTER-Tunka |  P| |   180 | 15.0 |        
    3945 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4024 |         MASTER-Amur |  P/ |    60 | 15.9 |        
    4128 |        MASTER-Tunka |  P| |   180 | 13.6 |        
    4104 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    4183 |         MASTER-Amur |  P/ |    60 | 16.1 |        
    4263 |         MASTER-Amur |  P/ |    60 | 16.3 |        
    4328 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    4342 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4422 |         MASTER-Amur |  P/ |    60 | 16.2 |        
    4528 |        MASTER-Tunka |  P| |   180 | 13.7 |        


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



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

  ID = 2541
TYPE = 35
DAYS = 0.1


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 INTEGRAL GRB200428.61 (trigger No 8611,19h 34m 58.38s , +21d 53m 53.7s, R=0.0458333) errorbox  357 sec after notice time and 365 sec after trigger time at 2020-04-28 14:40:28 UT, with upper limit up to  15.0 mag. The observations began at zenith distance = 87 deg. The sun  altitude  is -17.5 deg. 

The galactic latitude b =  0 deg., longitude l = 58 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1345998

We obtain a following upper limits.  

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

     400 |        MASTER-Tunka |  P| |    70 | 12.5 |        
     500 |        MASTER-Tunka |  P| |    90 | 12.6 |        
     620 |        MASTER-Tunka |  P| |   110 | 12.3 |        
    1333 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    1533 |        MASTER-Tunka |  P| |   180 | 13.0 |        
    1732 |        MASTER-Tunka |  P| |   180 | 14.1 |        
    1932 |        MASTER-Tunka |  P| |   180 | 14.4 |        
    2132 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    2332 |        MASTER-Tunka |  P| |   180 | 14.7 |        
    2531 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    2731 |        MASTER-Tunka |  P| |   180 | 14.6 |        
    2931 |        MASTER-Tunka |  P| |   180 | 14.3 |        
    3130 |        MASTER-Tunka |  P| |   180 | 14.2 |        
    3330 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    3529 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3729 |        MASTER-Tunka |  P| |   180 | 14.8 |        
    3929 |        MASTER-Tunka |  P| |   180 | 15.0 |        
    4128 |        MASTER-Tunka |  P| |   180 | 13.6 |        
    4328 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    4528 |        MASTER-Tunka |  P| |   180 | 13.7 |        


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



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

  ID = 2540
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 INTEGRAL GRB200428.61 (trigger No 8611,19h 34m 58.38s , +21d 53m 53.7s, R=0.0458333) errorbox  357 sec after notice time and 365 sec after trigger time at 2020-04-28 14:40:28 UT, with upper limit up to  14.7 mag. The observations began at zenith distance = 87 deg. The sun  altitude  is -17.5 deg. 

The galactic latitude b =  0 deg., longitude l = 58 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1345998

We obtain a following upper limits.  

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

     400 |        MASTER-Tunka |  P| |    70 | 12.5 |        
     500 |        MASTER-Tunka |  P| |    90 | 12.6 |        
     620 |        MASTER-Tunka |  P| |   110 | 12.3 |        
    1333 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    1533 |        MASTER-Tunka |  P| |   180 | 13.0 |        
    1732 |        MASTER-Tunka |  P| |   180 | 14.1 |        
    1932 |        MASTER-Tunka |  P| |   180 | 14.4 |        
    2132 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    2332 |        MASTER-Tunka |  P| |   180 | 14.7 |        


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



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

  ID = 2539
TYPE = 35
DAYS = 0.03


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 INTEGRAL GRB200428.61 (trigger No 8611,19h 34m 58.38s , +21d 53m 53.7s, R=0.0458333) errorbox  357 sec after notice time and 365 sec after trigger time at 2020-04-28 14:40:28 UT, with upper limit up to  14.7 mag. The observations began at zenith distance = 87 deg. The sun  altitude  is -17.5 deg. 

The galactic latitude b =  0 deg., longitude l = 58 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1345998

We obtain a following upper limits.  

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

     400 |        MASTER-Tunka |  P| |    70 | 12.5 |        
     500 |        MASTER-Tunka |  P| |    90 | 12.6 |        
     620 |        MASTER-Tunka |  P| |   110 | 12.3 |        
    1333 |        MASTER-Tunka |  P| |   180 | 12.9 |        
    1533 |        MASTER-Tunka |  P| |   180 | 13.0 |        
    1732 |        MASTER-Tunka |  P| |   180 | 14.1 |        
    1932 |        MASTER-Tunka |  P| |   180 | 14.4 |        
    2132 |        MASTER-Tunka |  P| |   180 | 14.5 |        
    2332 |        MASTER-Tunka |  P| |   180 | 14.7 |        


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

MASTER, 2002-2024