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SN2012cg prediscovery marginally detection by MASTER

ATel #4138; V. Lipunov (Lomonosow Moscow State Uni), V. Krushinsky (Ural State Uni) behalf of the MASTER team
on 31 May 2012; 18:51 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Supernovae

Referred to by ATel #: 4159

MASTER-Kislovodsk robotic telescope has obtained NGC4424 area on 2012-05-15.7903 UT during survey.

The OT is marginally seen in 1 image. The OT unfiltered magnitude is ~19 m (limit 20.2m). The SN2012cg discovered after two days (http://www.cbat.eps.harvard.edu/iau/cbet/003100/CBET003111.txt"
CBET 3105, M. Kandrashoff et al.).

The prediscovery image is available at: http://observ.pereplet.ru/images/MASTER_2012cg.jpg

Global MASTER Robotic Net