Observations critical tonight/tomorrow for HST/COS target SDSS J100515.38+191107.9
HST/COS will be observing SDSS J100515.38+191107.9 on 2013 January 31 as part of Dr. Boris Gaensicke and colleagues' Cataclysmic Variables campaign. Observations from tonight are CRITICAL for the HST scheduling team to decide whether to carry out the observations. Please see AAVSO Special Notice #329 for details.
Elizabeth Waagen, AAVSO HQ