October 6
2008 |
The K focus feature was added to allow for higher resolution modes near the Ca K line. |
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Aug
2008 |
HRS cooling weakens, then restored |
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April 29
2008 |
Cross-disperser monitoring camera installedSee April 29 Advisory |
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Mar
2008 |
Fine temperature control of spectrograph room began |
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Nov
2007 |
Iodine cell insertion malfunctions, then
repaired |
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Oct 11
2007 |
HRS collimator folding flat replacement See Oct 11 Advisory |
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Oct 10
2007 |
new filters put in service. See Oct 10 Advisory |
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Jun
2006 |
HRS red ccd replaced |
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Aug
2005 |
New HRS new cooling system; CCD was taken apart,
resulting in a few-pixel xy shift |
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Feb
2005 |
New HRS flat lamp installed, free of emission
lines |
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Feb
2004 |
Memo from Gary Hill about
guide star limits |
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Jan
2004 |
Position angle calculator for
the HRS sky fibers provided |
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Jun
2003 |
Script
hsplit.cl to split the FITS extensions and translate the headers into
the splits became available; it also corrects the keyword CCDSEC so that
CCDPROC works correctly |
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Jan
2002 |
XDisp failed to move from 316g to 600g; new
procedure for grating changes put in effect |
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Dec
2001 |
Misalignment of the slit unit was found to cause
reduced fiber throughput for the left sky fiber; problem corrected |
|---|
Dec
2001 |
A baffle in the optical path was missing; a new one
was created and inserted |
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