Extragalactic Photometry With Down to Earth Facilities: A Variability Study of Mkn 421

Details Extragalactic Photometry With Down to Earth Facilities: A Variability Study of Mkn 421 Extragalactic Photometry With Down to Earth Facilities: A Variability Study of Mkn 421

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..may.h1505g&link_type=abstract

American Physical Society, APS/AAPT Joint Meeting, May 2-5, 1996, abstract #H'1.505

Physics

Scientific paper

We are attempting to establish a small working observatory using the modest facilities available at DePauw's McKim Observatory. Our goal is to determine whether with the use of a modern CCD these facilities will be capable of research grade photometry. We are using a SBIG ST-6 CCD camera mounted on a standard 11" Celestron reflector. We will present a discussion of the issues faced in setting up the system. In addition we hope to present a preliminary examination of our Markarian 421 photometry. Mkn 421 is one of the brightest BL Lac objects with a magnitude that varies around 13. These light curves will eventually be used in comparison with TeV gamma ray observations from the cherenkov air shower array telescope on Mt. Hopkins.

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