Observing Program with the BGSU 0.5-m Telescope

We (Drs. Layden and Laird) are developing an observational research program using the BGSU 0.5-meter Telescope and CCD Camera system. The aim is to involve student observers in astronomical research which will be published in refereed journals.

In May 1999, we received a new AP6 CCD from Apogee Instruments, Inc, a new; 8-position filter wheel from DFM Engineering, Inc; and a new PC from Gateway. In early June, we have completed lab testing and characerization of the new system, and are beginning a research program with the help of undergraduate Nick Pearson and graduate student Boncho Bonev.

This project involves monitoring the brightness changes of 2-3 dozen "RR Lyrae" variable stars scattered about the sky chosen to have low interstellar reddenings. We will obain photometry (brightness measurements) in the Johnson V and I passbands over the stars' light cycles. It is known that the B-V color index of RR Lyrae stars can be used to estimate the star's reddening values, and it has been suggested that the V-I color index is even better. However, accuate V-I color curves exist for only 11 stars. When finished, our larger sample will test this suggestion; in particular, we will investigate the dependence of V-I color on the period and metal abundance of the RR Lyrae stars. Confirmation and improved calibration of the method will enable this technique to be used to determine reliable reddening values toward globular clusters and field RR Lyrae stars at low Galactic latitudes, where the reddening is high.

Here is some useful information:

Here is a list of when the telescope is being used for photometry (and who is assigned to observe then). During Summer Term, a Stargaze is held at 11pm on the first clear night of the week for the BGSU astronomy courses:

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