Calibration of Hubble Space Telescope WFPC2 Emission-Line Filters

Details Calibration of Hubble Space Telescope WFPC2 Emission-Line Filters Calibration of Hubble Space Telescope WFPC2 Emission-Line Filters

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pasp..111.1316o&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 111, Issue 764, pp. 1316-1320.

Astronomy and Astrophysics

Astronomy

35

Ism: Lines And Bands, Ism: Individual (Orion), Methods: Data Analysis

Scientific paper

The results of calibration of the primary emission-line filters of the Hubble Space Telescope WFPC2 are presented in a form which allows observers to easily calculate emission-line surface brightnesses for Hα, Hβ, [O III] λ5007, and [N II] λ6583. The Hα and [N II] filters pass both lines in such a way that observations in both are necessary to obtain good isolation of either line. We establish that determination of the strength of the underlying continuum can be important, especially in H II regions. We express cautionary notes against overly simple interpretations of the signal from filters selected to isolate lines at 4363, 6300, and 6717+6731 Å. Finally, we use this calibration to recommend guidelines for the selection of emission-line filters on future HST instruments.

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