GCN Circular 31370

A. Nicuesa Guelbenzu, S. Klose, S. Melnikov, B. Stecklum, U. Laux (all
TLS Tautenburg) report:

We observed the field of GRB 220101A (Tohuvavohu et al., GCN 31347
Not found
 
 
) with
the Tautenburg 1.34m Schmidt telescope equipped with the TAUKAM 6kx6k CCD
camera.

Observations were performed on January 1, 2022, at a midtime of 22.14 UT.
For the optical transient (Tohuvavohu et al., GCN 31347
Not found
 
 
; Kuin &
Tohuvavohu, GCN 31351
Not found
 
 
; Fu et al., GCN 31353
Not found
 
 
; Hentunen et al., GCN 31356
Not found
 
 
;
Perley et al., GCN 31357
Not found
 
 
; de Ugarte Postigo et al., GCN 31358
Not found
 
 
; Fynbo et
al., GCN 31359
Not found
 
 
; Vinko et al., GCN 31361
Not found
 
 
; Tomasella et al., GCN 31363
Not found
 
 
; Mao
et al., GCN 31364
Not found
 
 
; Noschese et al., GCN 31366
Not found
 
 
; Mao et al., GCN 31368
Not found
 
 
) we
measure

r = 19.86 +/- 0.13 mag (AB),

calibrated against the SDSS catalogue.