Stellar photometry with the Hubble Space Telescope Wide-Field/Planetary Camera: A progress report

Jon A. Holtzman, Edward J. Groth, Robert M. Light, S. M. Faber, Deidre Hunter, Earl J. O'Neil, Edward J. Shaya, William A. Baum, Bel Campbell, Arthur Code, Douglas G. Currie, S. P. Ewald, J. Jeff Hester, T. Kelsall, Tod R. Lauer, Roger Lynds, Donald P. Schneider, P. Kenneth Seidelmann, James A. Westphal

Research output: Contribution to journalArticle

19 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)L35-L40
JournalAstrophysical Journal
Volume369
Issue number2 PART 2
DOIs
StatePublished - Mar 10 1991

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point spread functions
Hubble Space Telescope
photometry
crowding
cameras
halos
stars
aberration
degradation
galaxies
color
exposure
effect
measuring

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Holtzman, J. A., Groth, E. J., Light, R. M., Faber, S. M., Hunter, D., O'Neil, E. J., ... Westphal, J. A. (1991). Stellar photometry with the Hubble Space Telescope Wide-Field/Planetary Camera: A progress report. Astrophysical Journal, 369(2 PART 2), L35-L40. https://doi.org/10.1086/185953
Holtzman, Jon A. ; Groth, Edward J. ; Light, Robert M. ; Faber, S. M. ; Hunter, Deidre ; O'Neil, Earl J. ; 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. / Stellar photometry with the Hubble Space Telescope Wide-Field/Planetary Camera : A progress report. In: Astrophysical Journal. 1991 ; Vol. 369, No. 2 PART 2. pp. L35-L40.
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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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Holtzman, JA, Groth, EJ, Light, RM, Faber, SM, Hunter, D, O'Neil, EJ, Shaya, EJ, Baum, WA, Campbell, B, Code, A, Currie, DG, Ewald, SP, Hester, JJ, Kelsall, T, Lauer, TR, Lynds, R, Schneider, DP, Seidelmann, PK & Westphal, JA 1991, 'Stellar photometry with the Hubble Space Telescope Wide-Field/Planetary Camera: A progress report', Astrophysical Journal, vol. 369, no. 2 PART 2, pp. L35-L40. https://doi.org/10.1086/185953

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.; 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.

In: Astrophysical Journal, Vol. 369, No. 2 PART 2, 10.03.1991, p. L35-L40.

Research output: Contribution to journalArticle

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T1 - Stellar photometry with the Hubble Space Telescope Wide-Field/Planetary Camera

T2 - A progress report

AU - Holtzman, Jon A.

AU - Groth, Edward J.

AU - Light, Robert M.

AU - Faber, S. M.

AU - Hunter, Deidre

AU - O'Neil, Earl J.

AU - Shaya, Edward J.

AU - Baum, William A.

AU - Campbell, Bel

AU - Code, Arthur

AU - Currie, Douglas G.

AU - Ewald, S. P.

AU - Hester, J. Jeff

AU - Kelsall, T.

AU - Lauer, Tod R.

AU - Lynds, Roger

AU - Schneider, Donald P.

AU - Seidelmann, P. Kenneth

AU - Westphal, James A.

PY - 1991/3/10

Y1 - 1991/3/10

N2 - 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.

AB - 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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Holtzman JA, Groth EJ, Light RM, Faber SM, Hunter D, O'Neil EJ et al. Stellar photometry with the Hubble Space Telescope Wide-Field/Planetary Camera: A progress report. Astrophysical Journal. 1991 Mar 10;369(2 PART 2):L35-L40. https://doi.org/10.1086/185953