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Alert Notice 358: Monitoring of Mira (omi Cet) in support of HST Observations

September 17, 2007: Dr. Margarita Karovska (Harvard-Smithsonian Center for Astrophysics) and
collaborators are performing a comprehensive study of the Mira AB interacting system, using the WFPC2 camera on the Hubble Space Telescope. Mira AB is composed of the prototype Mira variable omi Cet and its companion VZ Cet, separated by about 0.5 arcsecond. As part of this project they plan to obtain a large number of high-angular resolution images at wavelengths ranging from UV to optical.  The main objectives of the HST/WFPC2 observations are:

Alert Notice 365: Request to Monitor EF Eri for Hubble Space Telescope Observations

January 6, 2008: Dr. Paula Szkody (University of Washington) has requested our help in monitoring the magnetic cataclysmic variable EF Eri for upcoming Hubble Space Telescope observations. Confirming observations are requested to ensure that EF Eri is fainter than the safe observing threshold during the HST observing window on 2008 January 17 UT.

EF Eri is at RA = 03:14:13.20 , Dec = -22:35:43.0 (J2000).

Alert Notice 376: Request to monitor SDSS J151413.72+454911.9 for HST Observations [PP Boo]

April 23, 2008: Dr. Paula Szkody (University of Washington) and collaborators have requested our help in monitoring the cataclysmic variable SDSS151445 (SDSS J151413.72+454911.9) [PP Boo] for upcoming Hubble Space Telescope observations.  Dr. Szkody requests nightly monitoring of this source beginning immediately, and continuing through 2008 May 10 UT at least. A follow-up AAVSO Special Notice will be issued when the HST observing window has been set.

SDSS J151413.72+454911.9 is located at RA 15:14:13.720,Dec +45:49:11.80 (J2000)


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