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SU UMa

Alert Notice #480: MR UMa superoutburst coverage requested for HST observations

March 8, 2013:  Dr. Boris Gaensicke (Warwick University) has requested observations of the currently-outbursting SU UMa-type cataclysmic variable MR UMa in preparation for and support of HST observations scheduled for the week 2013 April 4-7.

Special Notice #329: Critical time for CV Campaign HST/COS target SDSS J100515.38+191107.9

January 29, 2013:  SDSS J100515.38+191107.9 is the upcoming target for the HST/COS CV Campaign (see AAVSO Alert Notice 471 and AAVSO Observing Campaigns page (http://www.aavso.org/observing-campaigns) for details and related Special Notices). Dr. Gaensicke writes:

"We are now entering the critical phase before the HST observations of SDSS1005+1911, scheduled for

                              Jan 31, 2013 01:17:09 to Jan 31, 2013 06:24:00 UT

Special Notice #326: Next HST/COS target is SDSS J100515.38+191107.9

January 24, 2013: Further to AAVSO Alert Notice 471 (http://www.aavso.org/aavso-alert-notice-471), the next HST COS target is the SU UMa-type dwarf nova SDSS J100515.38+191107.9. HST COS is scheduled to observe it:

                                          SDSS J100515.38+191107.9 2013 January 31 01:17:09 through 06:24:00 UT

Special Notice #322: CU Vel is next HST COS target

January 14, 2013: Further to AAVSO Alert Notice 471 (http://www.aavso.org/aavso-alert-notice-471) and AAVSO Special Notice #309 (http://www.aavso.org/aavso-special-notice-309), the next HST COS target is the classic SU UMa-type dwarf nova CU Vel. HST COS is scheduled to observe it:

                                                  2013 January 18 06:52:10 through 10:21:40 UT

Special Notice #321: Observations critical tonight for SDSS J093249.57+472523.0

January 10, 2013: Further to AAVSO Alert Notice 471 (http://www.aavso.org/aavso-alert-notice-471) and AAVSO Special Notice #319 (http://www.aavso.org/aavso-special-notice-319), tonight's observations of SDSS J093249.57+472523.0 will be critical, as sometime tomorrow (January 11) the scheduling team will make the final decison about going ahead with the HST COS observations planned for

SU Ursae Majoris

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