------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2089 2005 Feb 23 13.02UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK GMH at AST.STAR.RL.AC.UK WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- DISCOVERY OF CV ROTSE3 J100932.2-020155 E. Rykoff (U. Mich.) and R. Quimby (U. Texas) on behalf of the ROTSE collaboration report on Astronomical Telegram 423 that online analysis of ROTSE-III sky patrol fields reveals a new CV they designate ROTSE3 J100932.2-020155. The object was first detected on 2005 Jan 20 by the ROTSE-IIIb telescope at McDonald Observatory, Texas at an unfiltered magnitude mr 14.3. It has since stayed brighter than R=15 and has been imaged by ROTSE-IIIa at Siding Spring Observatory, Australia and ROTSE-IIIc at the H.E.S.S. site in Namibia, with the most recent detection on 22 Feb. The 2df survey had targeted the object (m_b=20.5) as a possible quasar, and took two spectra. The spectra are consistent with a quiescent galactic CV. On 20 Feb we took a spectrum during outburst with the HET. The object has a blue continuum with prominent H-alpha emission. This object is consistent with a SU UMa Dwarf Nova during a super outburst. Further information including a light curve can be found at