Alert Notice 597: GW Lib time set for third HST observation
September 6, 2017: Further to AAVSO Alert Notices 591, 595, and 596, Dr. Boris Gaensicke (Warwick University) informs us that the date and time for the third and final of three HST observations in his campaign on the pulsating white dwarf-containing cataclysmic variable GW Lib has been scheduled for
2017 Sep 13 23:52:02 to Sep 14 04:30:12 UT.