HST Wide-Field Planetary Camera II Status Update

Details HST Wide-Field Planetary Camera II Status Update HST Wide-Field Planetary Camera II Status Update

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.8503h&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #85.03; Bulletin of the American Astronomical Society, Vol. 31, p.1499

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Scientific paper

We review the status of the Wide-Field Planetary Camera II (WFPC2) onboard the Hubble Space Telescope as well as recent enhancements to calibration and analysis methods. The instrument continues to perform extremely well after 70000 images. Low level effects such as CTE and dark current continue to increase with long-term radiation exposure, but still affect only a minority of observations; work continues to characterize and monitor these effects. The long-term photometric stability appears to be excellent, with most filters showing changes of a few percent or less. Recent work shows that aperture photometry for small apertures (1-2 pixel radius) will be affected at the 5% to 10% level by target position in the field-of-view due to small focus variations. A new "on-the-fly calibration" feature of the HST archive allows instant re-calibration of WFPC2 data with the latest reference files; this should be a great benefit to both new observers and archival WFPC2 users. Recent results on polarization calibration, CTE, and other topics are discussed.

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