Photometric Properties Of The Texas MkII Electrographic Camera

C. B. Opal; E. P. Bozyan; P. J. Griboval

doi:10.1117/12.933488

16 November 1982 Photometric Properties Of The Texas MkII Electrographic Camera

C. B. Opal, E. P. Bozyan, P. J. Griboval

Author Affiliations +

Proceedings Volume 0331, Instrumentation in Astronomy IV; (1982) https://doi.org/10.1117/12.933488
Event: 1982 Astronomy Conferences, 1982, Tucson, United States

Abstract

We have investigated three aspects of the performance of the MkII Camera for stellar photometry: (1) intrinsic errors from plate to plate; (2) variations in sensitivity across the field; and (3) the extent of color transformations required and their stability with time. All evaluations were performed using plate material obtained at the telescope. Although the detector in this case was an electrographic camera, the techniques described can be used with any panoramic detector system. Briefly, the general conclusions from this evaluation are: Relative magnitudes and colors can be determined to an accuracy of 0.02 magnitude over a 2-magnitude range in the non-sky-limited case. Only simple aperture integration algorithms need be used, and flat-field and geometric distortion corrections are not necessary to obtain reliable results with the camera. Color transformations are on the order of 0.1 mag/mag, and are quite stable in time and reproducible from cathode to cathode.

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C. B. Opal, E. P. Bozyan, and P. J. Griboval "Photometric Properties Of The Texas MkII Electrographic Camera", Proc. SPIE 0331, Instrumentation in Astronomy IV, (16 November 1982); https://doi.org/10.1117/12.933488

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