Bright object protection for the ACS MAMA detector

Details Bright object protection for the ACS MAMA detector Bright object protection for the ACS MAMA detector

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acs..rept....3c&link_type=abstract

Instrument Science Report ACS 98-03, 9 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Advanced Camera For Surveys, Acs, Stsci

Scientific paper

Bright object protection for the ACS MAMA is similar in concept to that for the STIS FUV MAMA, but several mechanisms provide better protection for the ACS MAMA. A fold mirror blocks all light from reaching the MAMA when the CCDs are being used and the SBC filter wheel has shuttered positions. Protection mechanisms include, hardware, and software tests plus manual screening of proposals. The stellar magnitude limits are tabulated for the ACS filter set. The worst case is for a 19th magnitude O star exposed through the F115LP or F125LP filters or either of the two prisms. Such stars exceed the bright object protection limits and will require careful manual screening.

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