TITLE:   GCN CIRCULAR
NUMBER:  23958
SUBJECT: GRB 190311A: Mondy optical observations
DATE:    19/03/12 14:34:41 GMT
FROM:    Elena Mazaeva at IKI, Moscow  <30.v@mail.ru>

E. Mazaeva (IKI), E. Klunko (ISTP), A. Pozanenko (IKI), S. Belkin (IKI), A. Volnova (IKI) report on behalf of IKI-GRB-FuN:

We continue to observe optical afterglow of GRB 190311A (Troja et al. GCN 23946; Pozanenko et al. GCN 23947; Zhu et al. GCN 23948; Gorbovskoy et al. GCN 23949; Belkin et al. GCN 23951; Mao et al. GCN 23954) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Mar. 11 (UT) 15:11:33 (31 minutes after GRB trigger).

Light curve of the afterglow in R-filter (of the full set of the observations incl. reported earlier in GCNs 23947, 23951) can be found at:
http://grb.rssi.ru/GRB190311A/GRB190311A_LC.png

Photometry is based on the SDSS-DR12 stars (Lupton transformations)
SDSS-DR12_id R
J140819.68 +532900.1 17.09
J140818.11 +532934.7 15.19
J140809.64 +533055.9 16.97