Photometric Stability of an EMCCD Camera at 1-s Exposures
I. V. Afanasieva (1), V. G. Orlov (2), V. I. Ardilanov (1), V. A. Murzin (1), D. V. Oparin (1), A. N. Burenkov (1) ((1) Special Astrophysical Observatory of the Russian Academy of Sciences, (2) Instituto de Astronomia, Universidad Nacional Autonoma de Mexico)
TL;DR
This study evaluates the photometric stability of an EMCCD camera at 1-second exposures, identifying optimal operating modes and demonstrating its application in observing variable stars.
Contribution
It provides empirical analysis of EMCCD camera modes suitable for short-exposure stellar photometry and showcases practical observations of an eclipsing variable star.
Findings
Identified camera modes with minimal temporal instability effects.
Demonstrated successful photometry of an eclipsing variable star.
Discussed advantages and disadvantages of 1-s exposures for variable star studies.
Abstract
We present the results of testing an iXonUltra 888 EMCCDcamera to determine the operating parameters for short-exposure photometry of stars. As a result of the testing, those camera modes were selected in which the temporal instability of the electron multiplication charge does not significantly affect the light curves. In addition, the photometry of the eclipsing variable star ZTFJ 0038+2030, obtained with the Zeiss-1000 telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences, is presented. We have shown the advantages and disadvantages of 1-s exposures for studying variable stars.
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