AAS 203rd Meeting, January 2004
Session 8 Delta Scuti and Mira Variables
Poster, Monday, January 5, 2004, 9:20am-6:30pm, Grand Hall

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[8.06] Improving Variable Star Light Curves from a Campus Observatory

M.B. Rose, E.G. Hintz (Brigham Young University)

Observers working at major observatories can generally depend upon consistent, or at least slowly changing, conditions during a given night. This isn't necessarily the case at a campus observatory where a variety of influences can affect the seeing conditions and often cause significant changes from one frame to the next. During 'post-photing' reductions we have found that our campus data can be improved by taking into account the FWHM of each stellar image. However, it is a cumbersome process to implement when one is working with 100s of frames per night and as many as 40 stars on a frame. Therefore, we will present a new code, designed to work within IRAF, which will take the FWHM into account during the 'photing' process. This package also allows the user to pick a multiplier of the FWHM as their aperture for each star. Results will be presented for a number of \delta Scuti stars to show the improvements in their light curves. We will also present an ensemble photometry package, VARSTAR5.

The author(s) of this abstract have provided an email address for comments about the abstract: shenpei@hotmail.com

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.