Zhangwei Jin(Ningbo, Zhejiang, China) and Xing Gao (Urumqi, Xinjiang, China), report the discovery of a possible supernova (mag approximately 14.2) on a 60-s survey image (limiting mag about 19.5)taken by Xing Gao in Xingming ObservationSky Survey(C42) around Apr. 26.82344 UT,2011. using a unfilled CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=350-mm @f/6.9 ).the new object approximately located at R.A. =11h 55m 45s.56 Decl.=+55<19'33".8 (equinox 2000.0). Which is about 5.3" east and 19.1" north of the center of the galaxy NGC 3972.
Nothing is visible at this position on archival images taken on Apr. 10 (limiting mag 19.5) and Apr. 08 (limiting mag 19.5) or on the DSS from May 07,1991(limiting mag about 19.5).

XM20ZJ C2011 04 26.82344 11 55 45.56 +55 19 33.8 14.2 R C42
All images can be seen from: http://www.xjltp.com/XOSS/XM20ZJ/XM20ZJ.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 Apr. 26.82344 UT,2011LM=19.5,60S                    


             DSS IMAGE


archival images taken on Apr. 10