Progress report on Washington Photometry of Several Galactic Globular Clusters.

Details Progress report on Washington Photometry of Several Galactic Globular Clusters. Progress report on Washington Photometry of Several Galactic Globular Clusters.

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...195.0316g&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #03.16; Bulletin of the American Astronomical Society, Vol. 32, p.874

Astronomy and Astrophysics

Astronomy

Scientific paper

Washington photometry of M2, M72, M92 and NGC 4147 was carried out, at the JPL 0.6-m telescope at Table Mountain Facility, between June 1997 and December 1999. The long-term aim is to better estimate the ages of these objects and to better estimate the age of the Universe. The aim of the last two years has been to develop and refine techniques for taking exposures of up to 1 hour without the use of an auto-guider. This paper will discuss the advantages of long exposures over stacks of shorter ones, techniques for correcting telescope pointing for atmospheric refraction, the advantages of Washington System filters, and present some early results of the program. This work was carried out under a NASA Faculty Award for Research grant (P.I. Dr. William Taylor CSULA) and the NSF-funded JPL/CSULA Consortion for Undergraduate Research Experience.

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