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CRTS Supernova Candidate

ATEL # 1738; A.J. Drake, S.G. Djorgovski, M.J. Graham, R. Williams, A. Mahabal(Caltech); E.C. Beshore, S.M. Larson, R. Hill (LPL/UA); M. Catelan (PUC); E. Christensen (Gemini Observatory);
on 24 Sep 2008; 22:01 UT
Distributed as an Instant Email Notice (Request for Observations)
Password Certification: Andrew J. Drake (

Subjects: Nova, Supernova

We have detected a likely supernova in CSS images from 24 Sep 2008 UT. The object has the following parameters:

CSS080924:044524+182425 2008-09-24 UT 11:17:06 RA 04:45:24.00 Dec 18:24:25.1 Mag 17.5 Type SN

The object is near the edge of galaxy LCSB L0250N (z=0.0155). No transients are present in earlier epochs of CSS imaging including data taken on or before the 9th Mar 2008 (to mag ~19.5), or prior PQ and DSS images to mag ~22.

Further to ATel #1734, CSS080923:011149+143826 was independently discovered by ROTSE-III and has now been spectroscopically confirmed as a type-Ia supernova (CBET1513).

For finding charts and discovery images please see:
Current candidate and confirmed SNe can be found here.
CRTS optical transients are detected and published as VOEvents in real-time at

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R. E. Rutledge , Editor
ATEL Mirror v1.0 Updates