Help Prepare for Hubble Study of PQ And

Dr. Paula Szkody (University of Washington) notes that science observations
of PQ Andromedae with the Hubble Space Telescope have been scheduled for
this coming Wednesday, September 12, 2007, and Thursday, September 13,
2007 (UT). Dr. Szkody requests intensive coverage of this variable star through
the night of September 11-12, 2007 (Tuesday-Wednesday UT), which is when
the final decision will be made on whether PQ Andromedae is in quiescence
and is deemed safe to observe.

Please use the observing constraints given in AAVSO Alert Notice 356 as a guide
when making observations. As stated in the Alert Notice, both positive
detections and fainter-than estimates of PQ Andromedae are useful for this
campaign. The primary requirement is that we can show that PQ And is faint
enough to safely observe with the Hubble Space Telescope.

PQ Andromedae (0223+39) is a cataclysmic variable system that includes a pulsating white dwarf. It is located at R.A. 02h 29m 29.61s, Dec +40° 02' 40.0" (equinox 2000.0).

Charts for PQ Andromedae may be generated using VSP.

More Information

For more information on this campaign, which is being organized by Dr. Matthew Templeton (AAVSO), please visit the following URL:

Reporting Your Observations

Information on submitting observations to the AAVSO may be found here:

Good luck, and clear skies!

Rick Fienberg
Editor in Chief
Sky & Telescope
rfienberg@SkyandTelescope.com
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