NICMOS Camera 2 Coronagraphic ACQs

Details NICMOS Camera 2 Coronagraphic ACQs NICMOS Camera 2 Coronagraphic ACQs

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998nicm.rept...12s&link_type=abstract

Instrument Science Report NICMOS-98-012, 21 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Nicmos

Scientific paper

The NICMOS Camera 2 coronagraphic target acquisition capability (mode: ACQ) was successfully tested on 1998 February 6. The scheduling and execution of coronagraphic programs was started during February 1998. The NICMOS target acquisition allows the user to acquire a point source and position it into the coronagraphic hole. We are monitoring the coronagraphic programs to search for any potential problems that could impact the success or failure of the ACQs. We have evaluated 38 Camera 2 on-board ACQs, and describe in this report the stability of coronagraphic target acquisitions. The repeatability of the ACQ to position a target at the coronagraphic aperture (NIC2-CORON) reference point is extremely good.

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