Preliminary Assessment of the FR533N Filter Anomaly

Details Preliminary Assessment of the FR533N Filter Anomaly Preliminary Assessment of the FR533N Filter Anomaly

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001wfpc.rept....4g&link_type=abstract

Instrument Science Report WFPC2 2001-04, 15 pages

Other

Hubble Space Telescope, Hst, Space Telescope Science Institute, Wfpc2, Wide Field Planetary Camera 2

Scientific paper

Analysis of FR533N VISFLAT images has revealed an apparently randomly-occurring rotational offset of about 0.5 degrees in some images, a quantity that corresponds to one filter step. The pivot point for the rotation implicates the filter wheel as the source of this inconsistency. We expect no impact on observations; any photometric effect is less than 1%. A cursory check of several other filters (on other filter wheels) shows no similar problem. At this time, the source of this anomaly, whether it is mechanical or due to a software error, is not known.

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