Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 33007

GRB 221202A: MeerLICHT upper limits
2022-12-02T22:14:11Z (a year ago)
Simon de Wet at UCT <>
S. de Wet (UCT) and P.J. Groot (Radboud/UCT/SAAO) report on behalf of the
MeerLICHT consortium:

Following the detection by Swift of GRB 221202A and its X-ray counterpart
(Caputo et al., GCN 33005), the 0.6m wide-field MeerLICHT telescope,
located at Sutherland, South Africa, obtained 5x300s observations in the
q,z,i,r,g bands beginning at 21:14:34 UT on 2022 December 2, approximately
1.14 hours after the Swift trigger.

We detect no new source at the XRT position (Caputo et al., GCN 33005) in
any of our images down to the following 3-sigma upper limits, in the AB
magnitude system:

q > 21.80 at 21:17:27 UT
z > 20.01 at 21:22:34 UT
i > 21.02 at 21:28:03 UT
r > 21.53 at 21:33:25 UT
g > 21.58 at 21:38:54 UT

MeerLICHT is built and run by a consortium consisting of Radboud
University, University of Cape Town, the South African Astronomical
Observatory, the University of Oxford, the University of Manchester and the
University of Amsterdam.
Looking for U.S. government information and services? Visit