Holtzman, Jon A. and Groth, Edward J. and Light, Robert M. and Faber, S. M. and Hunter, Deidre and O'Neill, Earl J., Jr. and Shaya, Edward J. and Baum, William A. and Campbell, Bel and Code, Arthur and Currie, Douglas G. and Ewald, S. P. and Hester, J. Jeff and Kelsall, T. and Lauer, Tod R. and Lynds, Roger and Schneider, Donald P. and Seidelmann, P. Kenneth and Westphal, James A. (1991) Stellar photometry with the Hubble Space Telescope Wide-field/Planetary camera - A progress report. Astrophysical Journal Letters, 369 (2). L35-L40. ISSN 2041-8205. doi:10.1086/185953. https://resolver.caltech.edu/CaltechAUTHORS:20141125-135146838
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Abstract
We describe the prospects for the use of the Wide-Field/Planetary Camera (WFPC) for stellar photometry. The large halos of the point-spread function (PSF) resulting from spherical aberration and from spatial, temporal, and color variations of the PSF are the main limitations to accurate photometry. Degradations caused by crowding are exacerbated by the halos of the PSF. Here we attempt to quantify these effects and determine the current accuracy of stellar photometry with the WFPC. In realistic cases, the brighter stars in crowded fields have 0.09 mag errors; fainter stars have larger errors depending on the degree of crowding. We find that measuring Cepheids in Virgo Cluster galaxies is not currently possible without inordinate increases in exposure times.
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| Additional Information: | © 1991 American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1990 November 2; accepted 1990 November 26. This research was supported in part by the Hubble Space Telescope Program through various grants and contracts. | |||||||||
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| Subject Keywords: | image processing - photometry | |||||||||
| Issue or Number: | 2 | |||||||||
| DOI: | 10.1086/185953 | |||||||||
| Record Number: | CaltechAUTHORS:20141125-135146838 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141125-135146838 | |||||||||
| Official Citation: | Stellar photometry with the Hubble Space Telescope Wide-field/Planetary camera - A progress report Holtzman, Jon A.; Groth, Edward J.; Light, Robert M.; Faber, S. M.; Hunter, Deidre; O'Neil, Earl J., Jr.; Shaya, Edward J.; Baum, William A.; Campbell, Bel; Code, Arthur; Currie, Douglas G.; Ewald, S. P.; Hester, J. Jeff; Kelsall, T.; Lauer, Tod R.; Lynds, Roger; Schneider, Donald P.; Seidelmann, P. Kenneth; Westphal, James A. Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 369, March 10, 1991, p. L35-L40. | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 52154 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 26 Nov 2014 16:32 | |||||||||
| Last Modified: | 10 Nov 2021 19:21 |
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