AAVSO International Database

Alert Notice 356: Request to monitor PQ Andromedae for HST Observations

August 24, 2007: Dr. Paula Szkody (University of Washington) has requested our help in monitoring the nova PQ Andromedae for upcoming Hubble Space Telescope observations. The HST observations are scheduled to be made during the week of 2007 September 10-16 UT. Dr. Szkody requests monitoring of this object during the two weeks prior to the observing window, and intensive monitoring during the 24-48 hour period during which observations will be made.

PQ Andromedae (0223+39) is at R.A. 02:29:29.61 , Dec +40:02:40.0

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 360: Request to Monitor U Gem and SS Cyg for Radio Observations

November 5, 2007: Dr. Elmar Koerding, University of Southampton, England, and his collaborators have requested our assistance in a continuing project to monitor two dwarf novae -- U Geminorum (0749+22) and SS Cygni (2138+43) -- in support of radio observations with the MERLIN and VLA telescopes. This new campaign is a continuation of the project described in AAVSO Alert Notice 345.  Koerding and collaborators are attempting to detect and characterize radio emission from dwarf novae during outbursts.

Alert Notice 361: Request to monitor SDSS091908 for HST Observations

November 7, 2007: Dr. Paula Szkody (University of Washington) and collaborators have requested our help in monitoring the cataclysmic variable SDSS091908 (SDSS J091945.11+085710.0) for upcoming Hubble Space Telescope observations. The HST observations are scheduled to be made on or about the afternoon of 2007 November 14 (UT).  Dr.

Alert Notice 362: Nova in Puppis [Nova Pup 2007 = V597 Pup]

November 14, 2007

Event: Nova in Puppis

Discovered By: Alfredo Jose Serra Pereira, Carnaxide, Portugal (IAU Circular No. 8895)

Discovery Date: 2007 November 14.23 UT (JD 2454418.73)

Discovery Magnitude: approximately 7.0 (visual estimate)

Position: R.A. = 8h 16.2m Decl. = -34o 15' (J2000) from Pereira.

RA = 08h 16m 18.01s Decl. = -34o 15' 24.1" (J2000) by J.E. McGaha, Tucson, Arizona, measured with CCD imaging on November 14.243 - 14.256 UT.