[vsnet-grb-info 25011] GRB 200216B: z-band limit from NOT

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27110
SUBJECT: GRB 200216B: z-band limit from NOT
DATE:    20/02/17 01:20:29 GMT
FROM:    Antonio de Ugarte Postigo at IAA-CSIC  <deugarte at iaa.es>

A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), J. Martikainen (NOT and 
U. Helsinki), D. Perley (LJMU), K.E. Heintz (U. Iceland), D. Xu (NAOC),
A. Levan (Radboud U.) report on behalf of a larger collaboration:

We observed the field of GRB 200216B (Fermi GBM team GCN 
27101; D’Avanzo et al. GCN 27102) with the 2.5 m Nordic Optical 
Telescope equipped with AlFOSC. Observations consisted of 5x200s 
imaging in z-band, with mean epoch 17 Feb 2020 00:11:22 UT 
(10.647 hr after the burst). We do not detect any source within the 
refined XRT error box (Goad et al. GCN 27106) down to a 3-sigma 
limit of z > 23.3 mag.