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GCN Circular 29210

GRB 201216C: TSHAO, Terskol, Mondy optical upper limits
2020-12-31T17:43:53Z (3 years ago)
Alexei Pozanenko at IKI, Moscow <>
S. Belkin (IKI), A. Pozanenko (IKI),  M. Krugov (FAI), P. Levkina 
(INASAN), E. Klunko (ISTP), N. Pankov (IKI, HSE)   report on behalf of 

We observed   GRB 201216C (Beardmore et al., GCN  29061)  with 
Zeiss-1000 (West) telescope of TSHAO, Zeiss-2000 telescope of Terskol 
observatory, and AZT-33IK telescope of Mondy observatory.  The optical 
afterglow (Izzo et al., GCN  29066; Jelinek  et al., GCN 29070; Oates et 
al., GCN 29071; Shrestha et al., GCN  29085) at possible redshift of z = 
1.1  of presumably optically dark GRB (Vielfaure et al., GCN 29077) is 
not detected in our observations. Preliminary photometry of the field is 

Date       UT start  t-T0     Filter Exp.  OT   Err. UL.  Telescope
                      (mid, days)      (s)

2020-12-17 14:20:49  0.6968    R  60*180   n/d  n/d  19.8 Zeiss-1000(W)
2020-12-18 16:47:27  1.7653    R  28*180   n/d  n/d  21.9 Zeiss-2000
2020-12-19 12:00:27  2.5681    R  45*120   n/d  n/d  22.1 AZT-22

Photometry is based on USNO-B1.0 stars
USNO-B1.0_id R2
1065-0011134 15.33
1065-0011173 15.44
1064-0011283 16.67
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