V842 Cen | aavso

Special Notice #203: Request for monitoring of V842 Cen in support of HST Observations

March 15, 2010: Further to AAVSO Alert Notice 418, the AAVSO requests intensive monitoring of the cataclysmic variable V842 Cen in support of Dr. Paula Szkody's upcoming Hubble Space Telescope observations beginning now (2010 March 15.85; JD 2455271.35) and continuing through 2010 March 19. Observations are requested to show HST ground controllers that the system remains faint and is therefore safe to observe.

Alert Notice 418: Request for monitoring of V842 Cen in support of HST Observations

March 12, 2010: Further to AAVSO Alert Notice 417, the AAVSO requests intensive monitoring observations of the cataclysmic variable V842 Cen beginning immediately (2010 March 12.5 UT; JD 2455268.0) and continuing through 2010 March 19 (2455274.5). These observations are in support of the Hubble Space Telescope Cosmic Origins Spectrograph observations of V842 Cen planned for 2010 March 18 UT.

Alert Notice 417: Request for observations of GW Lib and V842 Cen in support of HST observations

March 3, 2010: Dr. Paula Szkody (U. Washington) has requested the help of AAVSO observers to provide monitoring of two cataclysmic variables, GW Lib and V842 Cen, in support of Hubble Space Telescope observations in March 2010. Observations of both objects are requested beginning immediately, with intensive observations requested beginning 48 hours prior to the scheduled HST visit.