MASTER Net MASTER Database: GRB200819.66 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 GRB200819.66
Trignum 992099
Trigger time 2020-08-19 15:43:52.88
Notice time 2020-08-19 15:45:02.274958
Coord, eb (01h 25m 42.72s , +63d 02m 52.8s) , 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
1443134 2020-09-16 21:40:54.794083 01h 25m 41.76s +63d 03m 39.6s SWIFT 0.00111111 retraction 992099 1 4044 retraction
1422707 2020-08-19 15:57:51.598478 01h 25m 41.76s +63d 03m 39.6s SWIFT 0.000694444 alert 992099 2 67 alert
1422697 2020-08-19 15:45:05.386168 01h 25m 42.72s +63d 02m 52.8s SWIFT 0.05 alert 992099 1 61 alert

DAYS:

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

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

2020-08-19 15:43:52 (JD 2459081.155463)

Siderial time 16.135834 h

Ra 01:25:42.72 Dec 63:02:52.80
( 21.428000d, 63.048000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 60.91 Azimuth: 225.17

Sun: Altitude: -27.06 Azimuth: 183.13

Moon: Altitude: -25.16 Azimuth: 173.65

Tunka

Object: Altitude: 51.09 Azimuth: 223.90

Sun: Altitude: -22.96 Azimuth: 157.08

Moon: Altitude: -18.83 Azimuth: 148.86

Kislovodsk

Object: Altitude: 22.76 Azimuth: 200.53

Sun: Altitude: 3.08 Azimuth: 104.50

Moon: Altitude: 10.47 Azimuth: 99.85

Tavrida

Object: Altitude: 21.73 Azimuth: 197.08

Sun: Altitude: 9.24 Azimuth: 98.59

Moon: Altitude: 16.64 Azimuth: 93.85

SAAO

Object: Altitude: -55.85 Azimuth: 199.02

Sun: Altitude: 4.60 Azimuth: 108.04

Moon: Altitude: 10.49 Azimuth: 114.53

IAC

Object: Altitude: 1.98 Azimuth: 173.91

Sun: Altitude: 50.56 Azimuth: 74.61

Moon: Altitude: 58.81 Azimuth: 69.68

Argentina

Object: Altitude: -38.64 Azimuth: 147.90

Sun: Altitude: 43.65 Azimuth: 198.98

Moon: Altitude: 38.99 Azimuth: 208.80

Mexico

Object: Altitude: 35.16 Azimuth: 148.06

Sun: Altitude: 36.28 Azimuth: 277.28

Moon: Altitude: 29.61 Azimuth: 270.59

Ural

Object: Altitude: 39.36 Azimuth: 211.34

Sun: Altitude: -2.35 Azimuth: 117.63

Moon: Altitude: 3.49 Azimuth: 111.17

Vostryakovo

Object: Altitude: 32.59 Azimuth: 200.58

Sun: Altitude: 8.53 Azimuth: 99.80

Moon: Altitude: 14.90 Azimuth: 93.72

Gal. latitude: 0.743184 Gal. longitude: 127.146071

Dist. to Sun: 94.356848

Dist. to Moon: 95.603454

Moon coord.: (157.828314 d, 14.314783 d)

Sun coord.: (149.045232 d, 12.573629 d)

Lunar disk: 0.005812

Lunar phase: 171.255241

Lunar bright limb: 259.563544

No SN in this field

2020-08-19 15:45:02 (JD 2459081.156273)

Siderial time 16.155332 h

Ra 01:25:42.72 Dec 63:02:52.80
( 21.428000d, 63.048000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 61.04 Azimuth: 225.16

Sun: Altitude: -27.05 Azimuth: 183.45

Moon: Altitude: -25.18 Azimuth: 173.95

Tunka

Object: Altitude: 51.21 Azimuth: 223.97

Sun: Altitude: -23.03 Azimuth: 157.38

Moon: Altitude: -18.92 Azimuth: 149.13

Kislovodsk

Object: Altitude: 22.84 Azimuth: 200.65

Sun: Altitude: 2.87 Azimuth: 104.70

Moon: Altitude: 10.27 Azimuth: 100.04

Tavrida

Object: Altitude: 21.79 Azimuth: 197.21

Sun: Altitude: 9.04 Azimuth: 98.79

Moon: Altitude: 16.44 Azimuth: 94.04

SAAO

Object: Altitude: -55.77 Azimuth: 199.20

Sun: Altitude: 4.37 Azimuth: 107.88

Moon: Altitude: 10.27 Azimuth: 114.36

IAC

Object: Altitude: 1.95 Azimuth: 174.04

Sun: Altitude: 50.32 Azimuth: 74.83

Moon: Altitude: 58.58 Azimuth: 69.95

Argentina

Object: Altitude: -38.77 Azimuth: 147.91

Sun: Altitude: 43.73 Azimuth: 198.60

Moon: Altitude: 39.11 Azimuth: 208.49

Mexico

Object: Altitude: 35.03 Azimuth: 148.06

Sun: Altitude: 36.53 Azimuth: 277.46

Moon: Altitude: 29.85 Azimuth: 270.74

Ural

Object: Altitude: 39.44 Azimuth: 211.47

Sun: Altitude: -2.49 Azimuth: 117.88

Moon: Altitude: 3.35 Azimuth: 111.40

Vostryakovo

Object: Altitude: 32.65 Azimuth: 200.72

Sun: Altitude: 8.37 Azimuth: 100.03

Moon: Altitude: 14.74 Azimuth: 93.94

Gal. latitude: 0.743184 Gal. longitude: 127.146071

Dist. to Sun: 94.357360

Dist. to Moon: 95.610730

Moon coord.: (157.839788 d, 14.310797 d)

Sun coord.: (149.045984 d, 12.573363 d)

Lunar disk: 0.005825

Lunar phase: 171.245666

Lunar bright limb: 259.602263

No SN in this field

2020-08-19 16:45:02 (JD 2459081.197940)

Siderial time 17.158070 h

Ra 01:25:42.72 Dec 63:02:52.80
( 21.428000d, 63.048000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 67.73 Azimuth: 222.23

Sun: Altitude: -25.14 Azimuth: 199.63

Moon: Altitude: -25.11 Azimuth: 189.44

Tunka

Object: Altitude: 57.84 Azimuth: 226.62

Sun: Altitude: -25.40 Azimuth: 173.23

Moon: Altitude: -22.70 Azimuth: 163.57

Kislovodsk

Object: Altitude: 27.18 Azimuth: 206.42

Sun: Altitude: -7.31 Azimuth: 115.24

Moon: Altitude: 0.05 Azimuth: 109.67

Tavrida

Object: Altitude: 25.51 Azimuth: 203.43

Sun: Altitude: -1.30 Azimuth: 109.19

Moon: Altitude: 6.16 Azimuth: 103.77

SAAO

Object: Altitude: -50.74 Azimuth: 206.87

Sun: Altitude: -7.92 Azimuth: 99.89

Moon: Altitude: -1.06 Azimuth: 106.08

IAC

Object: Altitude: 1.36 Azimuth: 180.82

Sun: Altitude: 37.32 Azimuth: 84.26

Moon: Altitude: 46.16 Azimuth: 80.73

Argentina

Object: Altitude: -45.41 Azimuth: 149.88

Sun: Altitude: 45.62 Azimuth: 178.13

Moon: Altitude: 43.46 Azimuth: 190.72

Mexico

Object: Altitude: 28.28 Azimuth: 149.05

Sun: Altitude: 49.06 Azimuth: 287.86

Moon: Altitude: 42.08 Azimuth: 279.23

Ural

Object: Altitude: 44.11 Azimuth: 218.11

Sun: Altitude: -9.23 Azimuth: 130.96

Moon: Altitude: -3.80 Azimuth: 123.45

Vostryakovo

Object: Altitude: 36.16 Azimuth: 207.79

Sun: Altitude: 0.18 Azimuth: 112.22

Moon: Altitude: 6.49 Azimuth: 105.48

Gal. latitude: 0.743184 Gal. longitude: 127.146071

Dist. to Sun: 94.383717

Dist. to Moon: 95.984834

Moon coord.: (158.429534 d, 14.104995 d)

Sun coord.: (149.084629 d, 12.559666 d)

Lunar disk: 0.006504

Lunar phase: 170.748696

Lunar bright limb: 261.491642

No SN in this field

2025-03-13 07:34:15 (JD 2460747.815451)

Siderial time 21.491492 h

Ra 01:25:42.72 Dec 63:02:52.80
( 21.428000d, 63.048000d)

Rise n/a

Transit n/a

Set n/a

Amur

Object: Altitude: 69.16 Azimuth: 139.27

Sun: Altitude: 16.80 Azimuth: 63.42

Moon: Altitude: -6.79 Azimuth: 247.97

Tunka

Object: Altitude: 78.26 Azimuth: 165.64

Sun: Altitude: 27.92 Azimuth: 39.92

Moon: Altitude: -18.89 Azimuth: 226.68

Kislovodsk

Object: Altitude: 53.91 Azimuth: 218.59

Sun: Altitude: 37.84 Azimuth: 326.40

Moon: Altitude: -35.72 Azimuth: 159.83

Tavrida

Object: Altitude: 50.83 Azimuth: 219.59

Sun: Altitude: 33.30 Azimuth: 317.46

Moon: Altitude: -32.27 Azimuth: 150.43

SAAO

Object: Altitude: -22.57 Azimuth: 208.42

Sun: Altitude: 36.54 Azimuth: 246.76

Moon: Altitude: -47.35 Azimuth: 64.42

IAC

Object: Altitude: 15.40 Azimuth: 205.60

Sun: Altitude: 3.02 Azimuth: 274.96

Moon: Altitude: -8.56 Azimuth: 104.46

Argentina

Object: Altitude: -57.51 Azimuth: 191.78

Sun: Altitude: -37.00 Azimuth: 302.86

Moon: Altitude: 26.33 Azimuth: 119.98

Mexico

Object: Altitude: 6.55 Azimuth: 168.02

Sun: Altitude: -61.85 Azimuth: 182.42

Moon: Altitude: 65.30 Azimuth: 25.95

Ural

Object: Altitude: 70.82 Azimuth: 236.39

Sun: Altitude: 29.60 Azimuth: 349.73

Moon: Altitude: -24.52 Azimuth: 180.63

Vostryakovo

Object: Altitude: 60.08 Azimuth: 231.05

Sun: Altitude: 26.49 Azimuth: 325.31

Moon: Altitude: -23.78 Azimuth: 157.04

Gal. latitude: 0.743184 Gal. longitude: 127.146071

Dist. to Sun: 69.304135

Dist. to Moon: 102.933709

Moon coord.: (163.719011 d, 8.442136 d)

Sun coord.: (353.228677 d, -2.927133 d)

Lunar disk: 0.990957

Lunar phase: 10.913303

Lunar bright limb: 299.694129

No SN in this field
Recent coverage and limits telegrams

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

  ID = 2986
TYPE = 35
DAYS = 1


MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the SWIFT GRB 200819A ( S. Dichiara et al., GCN 28263) errorbox  80 sec after notice time and 149 sec after trigger time at 2020-08-19 15:46:22 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 39 deg. The sun  altitude  is -23.8 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 200819A errorbox  7019 sec after notice time and 7088 sec after trigger time at 2020-08-19 17:42:01 UT, with upper limit up to  19.5 mag. Observations started at twilight.  The observations began at zenith distance = 61 deg. The sun  altitude  is -10.9 deg. 

The galactic latitude b =  1 deg., longitude l = 127 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1422693

We obtain a following upper limits.  

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

     165 |        MASTER-Tunka |  P| |    30 | 16.3 |        
     465 |        MASTER-Tunka |  P| |   630 | 17.7 |  Coadd 
     219 |        MASTER-Tunka |  P| |    40 | 16.5 |        
     284 |        MASTER-Tunka |  P| |    50 | 16.7 |        
     358 |        MASTER-Tunka |  P| |    60 | 16.9 |        
     448 |        MASTER-Tunka |  P| |    80 | 17.0 |        
     557 |        MASTER-Tunka |  P| |   100 | 16.8 |        
     687 |        MASTER-Tunka |  P| |   120 | 16.6 |        
     841 |        MASTER-Tunka |  P| |   150 | 16.1 |        
    1026 |        MASTER-Tunka |  P| |   180 | 16.1 |        
    7179 |      MASTER-Tavrida |   C |   180 | 17.2 |        
    7713 |      MASTER-Tavrida |   C |   180 | 18.1 |        
    8654 |      MASTER-Tavrida |   C |   180 | 15.7 |        
    8834 |      MASTER-Tavrida |   C |   540 | 16.8 |  Coadd 
    9464 |      MASTER-Tavrida |   C |  1800 | 18.8 |  Coadd 
    8855 |      MASTER-Tavrida |   C |   180 | 16.7 |        
    9056 |      MASTER-Tavrida |   C |   180 | 16.0 |        
    9257 |      MASTER-Tavrida |   C |   180 | 16.9 |        
    9437 |      MASTER-Tavrida |   C |   540 | 17.5 |  Coadd 
    9458 |      MASTER-Tavrida |   C |   180 | 16.7 |        
    9658 |      MASTER-Tavrida |   C |   180 | 17.1 |        
    9859 |      MASTER-Tavrida |   C |   180 | 17.7 |        
   10039 |      MASTER-Tavrida |   C |   540 | 19.1 |  Coadd 
   10060 |      MASTER-Tavrida |   C |   180 | 18.7 |        
   10261 |      MASTER-Tavrida |   C |   180 | 19.0 |        
   10465 |      MASTER-Tavrida |   C |   180 | 19.0 |        
   10645 |      MASTER-Tavrida |   C |   540 | 19.5 |  Coadd 
   10667 |      MASTER-Tavrida |   C |   180 | 19.0 |        
   10867 |      MASTER-Tavrida |   C |   180 | 19.1 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 2984
TYPE = 35
DAYS = 0.5


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 SWIFT GRB 200819A ( S. Dichiara et al., GCN 28263) errorbox  80 sec after notice time and 149 sec after trigger time at 2020-08-19 15:46:22 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 39 deg. The sun  altitude  is -23.8 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 200819A errorbox  7019 sec after notice time and 7088 sec after trigger time at 2020-08-19 17:42:01 UT, with upper limit up to  19.5 mag. Observations started at twilight.  The observations began at zenith distance = 61 deg. The sun  altitude  is -10.9 deg. 

The galactic latitude b =  1 deg., longitude l = 127 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1422693

We obtain a following upper limits.  

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

     165 |        MASTER-Tunka |  P| |    30 | 16.3 |        
     465 |        MASTER-Tunka |  P| |   630 | 17.7 |  Coadd 
     219 |        MASTER-Tunka |  P| |    40 | 16.5 |        
     284 |        MASTER-Tunka |  P| |    50 | 16.7 |        
     358 |        MASTER-Tunka |  P| |    60 | 16.9 |        
     448 |        MASTER-Tunka |  P| |    80 | 17.0 |        
     557 |        MASTER-Tunka |  P| |   100 | 16.8 |        
     687 |        MASTER-Tunka |  P| |   120 | 16.6 |        
     841 |        MASTER-Tunka |  P| |   150 | 16.1 |        
    1026 |        MASTER-Tunka |  P| |   180 | 16.1 |        
    7179 |      MASTER-Tavrida |   C |   180 | 17.2 |        
    7713 |      MASTER-Tavrida |   C |   180 | 18.1 |        
    8654 |      MASTER-Tavrida |   C |   180 | 15.7 |        
    8834 |      MASTER-Tavrida |   C |   540 | 16.8 |  Coadd 
    9464 |      MASTER-Tavrida |   C |  1800 | 18.8 |  Coadd 
    8855 |      MASTER-Tavrida |   C |   180 | 16.7 |        
    9056 |      MASTER-Tavrida |   C |   180 | 16.0 |        
    9257 |      MASTER-Tavrida |   C |   180 | 16.9 |        
    9437 |      MASTER-Tavrida |   C |   540 | 17.5 |  Coadd 
    9458 |      MASTER-Tavrida |   C |   180 | 16.7 |        
    9658 |      MASTER-Tavrida |   C |   180 | 17.1 |        
    9859 |      MASTER-Tavrida |   C |   180 | 17.7 |        
   10039 |      MASTER-Tavrida |   C |   540 | 19.1 |  Coadd 
   10060 |      MASTER-Tavrida |   C |   180 | 18.7 |        
   10261 |      MASTER-Tavrida |   C |   180 | 19.0 |        
   10465 |      MASTER-Tavrida |   C |   180 | 19.0 |        
   10645 |      MASTER-Tavrida |   C |   540 | 19.5 |  Coadd 
   10667 |      MASTER-Tavrida |   C |   180 | 19.0 |        
   10867 |      MASTER-Tavrida |   C |   180 | 19.1 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 2980
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 SWIFT GRB 200819A ( S. Dichiara et al., GCN 28263) errorbox  80 sec after notice time and 149 sec after trigger time at 2020-08-19 15:46:22 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 39 deg. The sun  altitude  is -23.8 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT GRB 200819A errorbox  7019 sec after notice time and 7088 sec after trigger time at 2020-08-19 17:42:01 UT, with upper limit up to  18.1 mag. Observations started at twilight.  The observations began at zenith distance = 61 deg. The sun  altitude  is -10.9 deg. 

The galactic latitude b =  1 deg., longitude l = 127 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1422693

We obtain a following upper limits.  

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

     165 |        MASTER-Tunka |  P| |    30 | 16.3 |        
     465 |        MASTER-Tunka |  P| |   630 | 17.7 |  Coadd 
     219 |        MASTER-Tunka |  P| |    40 | 16.5 |        
     284 |        MASTER-Tunka |  P| |    50 | 16.7 |        
     358 |        MASTER-Tunka |  P| |    60 | 16.9 |        
     448 |        MASTER-Tunka |  P| |    80 | 17.0 |        
     557 |        MASTER-Tunka |  P| |   100 | 16.8 |        
     687 |        MASTER-Tunka |  P| |   120 | 16.6 |        
     841 |        MASTER-Tunka |  P| |   150 | 16.1 |        
    1026 |        MASTER-Tunka |  P| |   180 | 16.1 |        
    7179 |      MASTER-Tavrida |   C |   180 | 17.2 |        
    7713 |      MASTER-Tavrida |   C |   180 | 18.1 |        
    8654 |      MASTER-Tavrida |   C |   180 | 15.7 |        
Filter C is a clear (unfiltred) band. 


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



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

  ID = 2979
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 SWIFT GRB 200819A ( S. Dichiara et al., GCN 28263) errorbox  80 sec after notice time and 149 sec after trigger time at 2020-08-19 15:46:22 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 39 deg. The sun  altitude  is -23.8 deg. 

The galactic latitude b =  1 deg., longitude l = 127 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1422693

We obtain a following upper limits.  

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

     165 |        MASTER-Tunka |  P| |    30 | 16.3 |        
     465 |        MASTER-Tunka |  P| |   630 | 17.7 |  Coadd 
     219 |        MASTER-Tunka |  P| |    40 | 16.5 |        
     284 |        MASTER-Tunka |  P| |    50 | 16.7 |        
     358 |        MASTER-Tunka |  P| |    60 | 16.9 |        
     448 |        MASTER-Tunka |  P| |    80 | 17.0 |        
     557 |        MASTER-Tunka |  P| |   100 | 16.8 |        
     687 |        MASTER-Tunka |  P| |   120 | 16.6 |        
     841 |        MASTER-Tunka |  P| |   150 | 16.1 |        
    1026 |        MASTER-Tunka |  P| |   180 | 16.1 |        


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



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

  ID = 2978
TYPE = 35
DAYS = 0


MASTER-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the SWIFT GRB 200819A ( S. Dichiara et al., GCN 28263) errorbox  80 sec after notice time and 149 sec after trigger time at 2020-08-19 15:46:22 UT, with upper limit up to  17.7 mag. The observations began at zenith distance = 39 deg. The sun  altitude  is -23.8 deg. 

The galactic latitude b =  1 deg., longitude l = 127 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1422693

We obtain a following upper limits.  

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

     165 |        MASTER-Tunka |  P| |    30 | 16.3 |        
     465 |        MASTER-Tunka |  P| |   630 | 17.7 |  Coadd 
     219 |        MASTER-Tunka |  P| |    40 | 16.5 |        
     284 |        MASTER-Tunka |  P| |    50 | 16.7 |        
     358 |        MASTER-Tunka |  P| |    60 | 16.9 |        
     448 |        MASTER-Tunka |  P| |    80 | 17.0 |        
     557 |        MASTER-Tunka |  P| |   100 | 16.8 |        
     687 |        MASTER-Tunka |  P| |   120 | 16.6 |        
     841 |        MASTER-Tunka |  P| |   150 | 16.1 |        
    1026 |        MASTER-Tunka |  P| |   180 | 16.1 |        


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

MASTER, 2002-2025