December 11, 2012: Further to AAVSO Alert Notice 471 (www.aavso.org/aavso-alert-notice-471) and AAVSO Special Notice #309 (www.aavso.org/aavso-special-notice-309), HST COS is observing the WZ Sge-type cataclysmic variable SDSS J075507.70+143547.6 December 13-14:
SDSS J075507.70+143547.6 13 December 2012 23:32:57 through 14 December 04:45:44 UT
December 5, 2012: As announced in AAVSO Special Notice #313 (www.aavso.org/aavso-special-notice-313), HST COS is scheduled to observe the UG-type dwarf nova V405 Peg
7 December 2012 02:31:20 through 07:50:03 UT
November 20, 2012: The HST COS far ultraviolet observations of the dwarf nova CW Mon will be taking place 2012 November 30 20:54:49 through 2012 December 1 02:26:15 UT (AAVSO Special Notice #309, www.aavso.org/aaso-special-notice-309).
November 8, 2012: The HST COS far ultraviolet observations of the dwarf nova SDSS J001153.08-064739.1 have been scheduled for 2012 November 9 20:42:29 UT through November 10 04:57:33 UT (AAVSO Special Notice #304).
Your observations from tonight are crucial to confirm whether the target is at minimum (which it must be for HST to observe it).
Coordinates: R.A. 00 11 53.08 Dec. -06 47 39.2 (2000.0)
October 31, 2012: Further to AAVSO Alert Notice 471 (Gaensicke, Patterson, and Henden) and AAVSO Special Notice #298, the HST COS (Cosmic Origins Spectrograph) far ultraviolet observations of THE NEXT TARGET from the list, the dwarf nova-type cataclysmic variable
SDSS J001153.08-064739.1,
have been scheduled for 2012 November 9 20:42:29 UT through 2012 November 10 04:57:33 UT.
October 31, 2012: The cataclysmic variable SS Cyg is beginning to decline from what appears to be a narrow outburst, and was at visual magnitude 9.1 on 2012 October 30, according to observations in the AAVSO International Database.
6 June 2012: Dr. Koji Mukai (Universities Space Research Association/NASA Goddard Space Flight Center) has requested AAVSO observers' assistance in monitoring the SS Cyg-type dwarf nova RU Peg in support of target-of-opportunity observations with the NASA Swift satellite during an outburst.
His observations will be targeted during the rise to outburst and during late decline from outburst. Thus, your prompt notification to AAVSO Headquarters of activity in RU Peg will be crucial to the success of this campaign.
7 May 2012: As mentioned in AAVSO Alert Notice 445 in August 2011 and AAVSO Special Notice #258 in October 2011, Dr.
October 21, 2011: The short period cataclysmic variable BW Scl appears to be in outburst. The object was detected in outburst at m(vis)=9.6 by M. Linnolt on 2011 October 21.3146 (JD 2455855.8146), and confirmed by A. Plummer at m(vis)=9.4 on October 21.3424. Observations of this object are encouraged. The object has conflicting classifications in astronomical literature, but is probably a WZ Sge-type dwarf nova rather than a novalike variable.
BW Scl is located at the following (J2000) coordinates:
