VY Scl

July 8, 2013: The VY Scl variable OR And continues in its low state, so it has been scheduled for HST/COS observations. Based on your observations, the HST/COS team will be making the final decision tomorrow morning (2013 July 9) whether to observe OR And on:

OR And 2013 July 10 11:47:01 through 15:56:12 UT

OR And is ~18V in its low state and ~14.5V in its high state.

June 24, 2013: HST/COS is scheduled to observe the SU UMa-type dwarf nova CC Scl:

CC Scl   2013 June 27 02:12:04 through 05:39:30 UT

The HST team will be making a final decision early on June 26 about observing CC Scl based substantially on your observations, so they are essential.
 

June 12, 2013: Among the research options in the HST/COS CV campaign underway are observing two VY Scl stars in the low state, the only time the white dwarf is observable. OR And is now in its low state, at 18th V magnitude as of 2013 June 11 UT.

February 12, 2013: Further to AAVSO Alert Notice 471 (http://www.aavso.org/aavso-alert-notice-471) and AAVSO Special Notice #330 (http://www.aavso.org/aavso-special-notice-330), HST/COS is scheduled to observe BB Dor on:

     BB Dor  2013 February 13 20:57:03 through 23:53:50 UT

February 2, 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 IR Com. HST/COS observations are scheduled for:

     IR Com   2013 February 8 00:38:46 through 05:57:49 UT

August 25, 2012: Dr. Nikolaus Vogt (Universidad de Valparaiso, Chile) has requested photometry and spectroscopy of the novalike (VY Scl subtype) cataclysmic variable TT Ari in support of upcoming observations with the Canadian Microvariability and Oscillations of Stars (MOST) satellite.

THIS CAMPAIGN HAS BEEN CANCELLED. SEE AAVSO ALERT NOTICE 468 FOR DETAILS.  August 21, 2012