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Special Notice #352: Correction to target name in Special Notice #351

May 8, 2013: In AAVSO Special Notice #351 (, one of the upcoming HST/COS targets was referred to as ASAS1600-48. The name of this system as found in VSX is ASAS J160048-4846.2. Please use this name when reporting observations to the AAVSO International Database. Many thanks.

ASAS J160048-4846.2, scheduled to be be observed 2013 Jul 8 UT, is a WZ Sge-type variable and is 17.9V at min and 12.6V at max.

Special Notice #344: IY UMa and MR UMa next HST/COS targets

March 25, 2013:  Further to AAVSO Alert Notice 471 ( and AAVSO Special Notice #342 (, HST/COS is scheduled to observe the eclipsing SU UMa-type dwarf nova IY UMa:

                      IY UMa     2013 March 29 23:43:52 through March 30 02:18:13 UT


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