WFC3 UVIS PSF Evaluation in Thermal-Vacuum Test #1

Details WFC3 UVIS PSF Evaluation in Thermal-Vacuum Test #1 WFC3 UVIS PSF Evaluation in Thermal-Vacuum Test #1

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005wfc..rept...10h&link_type=abstract

Instrument Science Report WFC3 2005-10, 12 pages

Computer Science

Performance

Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3

Scientific paper

We have assessed the image quality of the WFC3 UVIS channel in a flight-like thermal-vacuum environment, but with its flight detector installed in a somewhat misaligned condition. Point source measurements at 16 field positions and four wavelengths indicate excellent imaging performance for the UVIS channel. Encircled energies readily meet expectations over the field, with CASTLE stimulus illumination. Models including the mid-frequency WFE of the HST OTA indicate that the on-orbit EE will likely meet the goal levels at 633 nm but fall just short of the core CEI specification at 250 nm, which is overly stringent.

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