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Alert Notice 389: Support for VLT spectroscopy of the novalike variable VY Scl

November 11, 2008 : Dr. Steve Howell (NOAO, Tucson) informs us that he has been awarded time to obtain spectroscopic observations of the cataclysmic variable VY Scl with the Very Large Telescope in Chile. These observations are being  sought during VY Scl's current deep minimum, which began some time before 2008 September 20 (JD 2454730). VLT observations are scheduled via prioritized queue, and the exact observation time is not yet known; however, observations are expected within 1-2 weeks. We therefore ask that observations begin immediately (2008 November 11; JD 2454782) and continue through the date of VLT observations, which will be announced as soon as it is available via the aavso-discussion list and/or an AAVSO Special Notice.
 

VY Scl is currently in its faint state, around m(V) = 18 +/- 1 magnitude. Observers are asked to obtain filtered observations if possible, with V-band photometry taking priority.  Because the object is faint, high S/N data would require very long integration times.  A signal-to-noise of at least 10 is preferred, but please keep exposure times below 900 seconds if possible.

VY Scl is located at the following (J2000) coordinates:

RA: 23 29 00.50 , Dec: -29 46 46.0

Charts for VY Scl may be plotted using VSP:

http://www.aavso.org//vsp

Please report all observations to the AAVSO as "VY SCL".

This AAVSO Alert Notice was prepared by M. Templeton.

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