NICMOS Focus and PAM Grid Tilt Tests

Details NICMOS Focus and PAM Grid Tilt Tests NICMOS Focus and PAM Grid Tilt Tests

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006hst..prop11088w&link_type=abstract

HST Proposal ID #11088. Cycle 15

Physics

Scientific paper

The purpose of this proposal is to determine if the focus has changed during the safing of NICMOS during the recent shutdown of the NCS, as well as to determine if the tilt of the PAM needs to be corrected. The program consists of: Visit 01: Focus sweep using NIC2 Visit 02: Focus sweep using NIC1 Visit 03: Uplink of PAM settings on hold pending evaluation of visit 1 and 2 Visit 04: Focus sweep using NIC3 on hold pending evaluation of visit 1 and 2 Visit 05: PAM X/Y grid tilt for NIC1 on hold pending evaluation of visit 1 and 2 Visit 06: PAM X/Y grid tilt for NIC2 on hold pending evaluation of visit 1 and 2 Visit 07: Uplink of PAM X/Y parameters on hold pending execution of visit 5 and 6 After the focus sweeps with NIC1 and NIC2, the focus parameters will be evaluated together with a rough estimate of the coma. The results of this evaluation may lead to a decision to perform a focus sweep with NIC3 and/or a measurement of the PAM tilt grid. No measurement of the PAM tilt grid are planned for NIC3. The focus sweeps are based on the normal focus monitoring proposal 9637. The tilt grid measurements are based proposal 8977 NIC1 and 9645 NIC2.

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