ACS and WFPC2 TGSMOV Two-Gyro PSF, Pointing, and Dither Test

Details ACS and WFPC2 TGSMOV Two-Gyro PSF, Pointing, and Dither Test ACS and WFPC2 TGSMOV Two-Gyro PSF, Pointing, and Dither Test

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10458b&link_type=abstract

HST Proposal ID #10458

Other

Hst Proposal Id #10458

Scientific paper

12 orbits allocated. Currently only 7 orbits scheduled in this proposal version. Other visits / orbits may be added pending results of F2G test and managerial decisions. This version contains ACS/HRC with parallels in ACS/WFC and NICMOS. No WFPC2 in this version. Goals: PSF, PSF repeatability, pointing and stability within orbit and between orbits. Also test results for different targets. {F2G requirements 1a, 1c, 2 , 4}. SCHEDULER: When activating this proposal, please select one target and execute the four visits for that target. Then select two more targets and execute only the first visit for those. The visit names are encoded as follows: first letter = target {A = NGC6341, B=NGC288, etc.} second letter = visit number {visit 1, 2, 3, or 4}; for example visit B2 is second visit on NGC288. Thus you might execute a set of visits like D1, D2, D3, D4, K1, and L1. The actual targets should be selected based their visibility during the TGSMOV test, and other potential issues such as guide star availability. If target NGC6341 is available {visits A1, A2, A3, and A4} please give it priority over the other targets. From running the targets in the Phase I 2-gyro APT we think they will schedule roughly as follows: April2005 use targets F, G, I. May 2005 use targets G, H, I. June 2005 use targets B, C, J. July - August 2005 use targets B, C, D, E. September 2005 use targets B, D, K, L. October 2005 use targets D, K, L, M. For time periods after October 2005 we may need to add additional targets / visits. But these dates are only a guidline. Use any targets that schedule properly.

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