[vsnet-grb-info 25490] Fermi GRB 200415A: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27590
SUBJECT: Fermi GRB 200415A: Global MASTER-Net observations report 
DATE:    20/04/16 04:15:14 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov,  D. Cheryasov
(Lomonosov Moscow State University, SAI, Physics Department),

R. Podesta, C.Lopez, F. Podesta, C.Francile 
(Observatorio Astronomico Felix Aguilar OAFA),

H.Levato 
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),

R. Rebolo, M. Serra 
(The Instituto de Astrofisica de Canarias),

D. Buckley 
(South African Astronomical Observatory),

O.A. Gres, N.M. Budnev, O.Ershova 
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

V. Yurkov, A. Gabovich, Yu. Sergienko 
(Blagoveschensk Educational State University)




MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 200415A ( Fermi GBM team, GCN 27579) errorbox  59974 sec after notice time and 60005 sec after trigger time at 2020-04-16 01:28:11 UT, with upper limit up to  18.9 mag. The observations began at zenith distance = 74 deg. The sun  altitude  is -45.2 deg. 

The galactic latitude b = -57 deg., longitude l = 304 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1337394

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   60036 | 2020-04-16 01:28:11 |         MASTER-SAAO | (00h 26m 38.28s , -62d 06m 18.6s) |   C |    60 | 18.4 |        
   60040 | 2020-04-16 01:28:15 |         MASTER-SAAO | (00h 41m 32.15s , -62d 05m 14.4s) |   C |    60 | 18.0 |        
   62934 | 2020-04-16 02:16:29 |         MASTER-SAAO | (00h 26m 30.17s , -62d 06m 01.0s) |   C |    60 | 18.9 |        
   62938 | 2020-04-16 02:16:33 |         MASTER-SAAO | (00h 41m 27.25s , -62d 04m 57.1s) |   C |    60 | 18.7 |        
   63014 | 2020-04-16 02:17:49 |         MASTER-SAAO | (00h 24m 54.86s , -60d 05m 54.9s) |   C |    60 | 18.9 |        
   63018 | 2020-04-16 02:17:53 |         MASTER-SAAO | (00h 38m 56.88s , -60d 04m 50.7s) |   C |    60 | 18.8 |        
   63097 | 2020-04-16 02:19:12 |         MASTER-SAAO | (00h 36m 38.06s , -58d 03m 33.9s) |   C |    60 | 18.6 |        
   63173 | 2020-04-16 02:20:28 |         MASTER-SAAO | (00h 53m 41.50s , -58d 06m 07.0s) |   C |    60 | 18.6 |        
   63946 | 2020-04-16 02:33:21 |         MASTER-SAAO | (00h 24m 52.11s , -60d 06m 10.1s) |   C |    60 | 18.6 |        
   63950 | 2020-04-16 02:33:25 |         MASTER-SAAO | (00h 38m 49.79s , -60d 05m 07.9s) |   C |    60 | 18.6 |        
   64029 | 2020-04-16 02:34:45 |         MASTER-SAAO | (00h 36m 38.94s , -58d 04m 49.4s) |   C |    60 | 18.5 |        
   64105 | 2020-04-16 02:36:00 |         MASTER-SAAO | (00h 53m 43.98s , -58d 04m 24.7s) |   C |    60 | 18.3 |        
Filter C is a clear (unfiltred) band. 


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