Very rare outburst of NSV00907 in March 2004

On March 2nd, 2004, Patrick Schmeer announced in a message to cba-news his detection of a rare outburst of NSV00907 : 

"The CV candidate NSV 907 is visible in outburst on an unfiltered CCD image taken with the University of Iowa's Rigel telescope: NSV00907 20040302.106 135C Scp. The only previously recorded outburst of NSV 907 = Ross 182 occurred on 1926 Nov. 26 (mpg= 11). ... NSV 907 is probably identical with the ROSAT source 1RXS J024459.2+273126".

I started an unfiltered CCD photometry session on this object on the evening of Mar 02/03, 2004, and collected CCD images for 2.2 h (0.35-m f/6.3 telescope). The variable was at about mag 13.9 (unfiltered).

The resulting light curve (see below) shows a decline by 0.2 mag over the observation interval, but no obvious periodic modulation. Due to the unfavourable location of the variable over the Belgian horizon, I could not follow it for a longer period.





Copyright © 2004 - Tonny Vanmunster.