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: http://www.stsci.edu/instruments/observatory/focus/ephem.html
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Observatory Support News and Advisories Pointing Focus Reports |
Frequently Asked Questions
User Support |
Listed here are links to quarterly files containing focus model values. The values are given in microns of secondary mirror and represent offsets or excursions from some overall focus state which can be estimated by inspection of the focus history plots. Add the looked up model value to your estimate of the baseline focus state for the best determination of the HST focus at a given time. Zero microns is defined as best focus for the PC in the visible.
The column labeled "full-temp" is the appropriate model to use. The others are obsolete. Ignore the last column labeled "observed".
Year
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First Quarter
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Second Quarter
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Third Quarter
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Fourth Quarter
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1994 Ephemerides
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1995 Ephemerides
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1996 Ephemerides
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1997 Ephemerides
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1998 Ephemerides
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1999 Ephemerides
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2000 Ephemerides
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2001 Ephemerides
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2002 Ephemerides
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2003 Ephemerides
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 1 Four temperature model data not currently available for Days 2001.121 through 2001.151.
 2 Day 2003.047 is the last day for which temperatures used by the Hershey breathing model will be available through OMS.
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