Calibration of the Lick red CCD bandpasses
- Creators
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Djorgovski, S.
Abstract
Red bandpasses indigenous to the Lick Observatory CCD imaging and photometry are defined and described. A set of primary calibration standards which define the magnitude zero points is presented. Color equations, relating these bandpasses to the other, commonly used photometric systems are evaluated by numerical integration of stellar spectra, and compared to the real data. It is estimated that the present calibration is accurate and consistent to about 2-3 percent as a magnitude predictor, if the primary standards are used; this accuracy is only about 3-5 percent if VR photometry is used for calibration, and only about 5-8 percent if BV photometry is used. (These estimates do not include the errors of measurement). This is sufficient for most scientific applications of data taken in these bandpasses, although it may be improved somewhat in a future work.
Additional Information
© 1985 Astronomical Society of the Pacific. Provided by the NASA Astrophysics Data System. Received 10 June 1985, revised 1985 July 12. Based in part on the research done at Lick Observatory, University of California. I am very grateful to the staff of Lick Observatory for their continuous help with the equipment and observations. CCD quantum efficiency curves were communicated by J. Miller and L. Robinson, and the lens transmission curves by R. Stover. Hy Spinrad invented the filters and helped in measurement of their transmission curves. Data used to construct Figure 8 were obtained by S. Kulkarni and P. McCarthy. Some of the software used for this work was developed by T. Lauer, R. Stover, and D. Terndrup. Marc Davis provided support, occasional help, and much needed prodding. Ivan King provided indoctrination on magnitudes and much good advice. I acknowledge helpful criticism of an anonymous referee. This work was partly supported by NSF grant AST 81-18557, and a University of California Regents fellowship.Attached Files
Published - 1985PASP___97_1119D.pdf
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Additional details
- Eprint ID
- 97553
- Resolver ID
- CaltechAUTHORS:20190731-125856656
- AST 81-18557
- NSF
- University of California
- Created
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2019-07-31Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field