POSSIBLE SUPERNOVA IN NGC 6632
Zhangwei Jin(Ningbo, Zhejiang, China) and Xing Gao (Urumqi, Xinjiang, China), report the discovery of a possible supernova (mag approximately 16.4) on a 40-s survey image (limiting mag about 19.5)taken by Xing Gao in Xingming ObservationSky Survey(C42) around Mar .24.91344 UT,2013. using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=350-mm @f/6.9 ).the new object approximately located at R.A. =18h 25m 01s.98 Decl.=+27°31’53”.7(equinox 2000.0). Which is about 12.6″ west and 13.3″ south of the center of the NGC6632.
Nothing is visible at this position at this position on archival images taken on Mar.20,2013. (limiting mag 19.2) or on the DSS(POSS2/UKSTU Red) from May. 03,1989(limiting mag about 19.8)
XM44ZJ C2013 03 24.91344 18 25 01.98 +27 31 53.7 16.4 V C42
All images can be seen from: http://www.xjltp.com/XOSS/XM44ZJ/XM44ZJ.htm
C42,Xingming Observatory, Mt. Nanshan. Observers Z.Jin, X.Gao ,Measurers Z.Jin 0.35-m f/6.9 Schmidt-Cassegrain telescope and CCD.
Discovery image taken by C42 on Mar.24.91344 UT,2013(LM=19.5,40S)
Archival image taken on 2013.Mar.16