------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 3163 2016 Apr 22 19.50UT 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 Backup: gmh@wdcc1.bnsc.rl.ac.uk WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- MASTER OT J063429.91-300200.2, HIGH AMPLITUDE DWARF NOVA V. Shumkov et. al., Lomonosov MSU and others report on ATEL 8978 that the MASTER-SAAO auto-detection system discovered an OT source at: RA 06h 34m 29.91s DEC -30d 02m 00.2s (2000) on 2016-Apr 21.799UT. The OT unfiltered magnitude is 14.9m (limit 18.0m). It was recorded in two images. There is no minor planet at this place. They have a reference image without OT of 2015 Feb 19.954UT with unfiltered magnitude limit 19.7m. There is a GSC 2.3.2 star with blue 21.29 mag, so they suggest the amplitude of outburst is more than 6.4m . There is GALEX source in 2.8". Spectral observations are required. Guy M Hurst