[vsnet-grb-info 4339] GRB 070223: MDM Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6126
SUBJECT: GRB 070223: MDM Observations
DATE:    07/02/23 02:57:25 GMT
FROM:    Nestor Mirabal at Columbia U  <mirabal at astro.columbia.edu>

N. Mirabal and J. P. Halpern (Columbia U.) report
on behalf of the MDM Observatory GRB follow-up team:

"We have observed the Swift location of GRB 070223 (Vetere et al.,
GCN 6125) with the MDM 1.3m telescope at a mean epoch
Feb. 23, 02:18 UT (~1 hr post-burst). Inside the XRT error circle,
we find no new optical sources to preliminary limiting
magnitudes R > 20.3, I > 20.0. Observations are ongoing.

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