Description of "Dirty" CCD Low Temperature (-40 deg C) Directory

Directory: CCD_loT

readme

All the image files in this directory are taken by the flight CCD at
approx -40C under vacuum, and are before cleaning of the CCD.
Tests include stability, dark current, linearity with both light level
and shutter speed, and spectral responsivity in selected test filters.
 
Directories corresponding to these tests are explained below.  The images
in the directories are obtained in the order that the directories are
listed.
 
dark      dark current, 4 exposures at 100 ms, 4 exposures at 500 ms,
          and 4 exposures at 917 ms.  Julian day 353 of 1994.
 
shut_500  14 exposures at constant light level through 500 nm test filter,
          with exposure times ranging from 0 to 917 ms.  Julian day
          353 of 1994.
 
shut_700a images of constant light level through 700 nm test filter, with
shut_700b varying exposure times.  "a" has no neutral density filter in
shut_700c addition, and includes 14 exposure times ranging from 0 to 917 ms.
          Some saturation occurred at longer exposure times because this is
          near the peak sensitivity of the CCD.  "b" repeats exposure times
          50-800 ms in 7 exposures, this time with 1.0 neutral density
          filter to cut light levels.  "c" has 3 exposures at 650-917 ms
          with a 1.5 neutral density filter.  Julian day 353 of 1994.
 
shut_1000 15 exposures at constant light level through 1000 nm test filter,
          with exposure time ranging from 0-917 ms.  Julian day 353 of 1994.
 
lin_500   1 exposure through each of 7 neutral density filters (0-2.0)
          with a constant light level through the 500 nm test filter.
          917 ms exposure time.   Julian day 353 of 1994.
 
lin_700   1 exposure through each of 8 neutral density filters (0-2.5)
          with a constant light level through the 700 nm test filter.
          100 ms exposure time.  Julian day 353 of 1994.
 
lin_1000  1 exposure through each of 7 neutral density filters (0-2.0)
          with a constant light level through the 1000 nm test filter.
          917 ms exposure time.  Julian day 353 of 1994.
 
spec      1 exposure at 100 ms through each of 8 test filters (400, 500,
          600, 700, 800, 900, 1000, 1050 nm) at constant light level.
          400 and 500 nm test filters repeated at exposure times of 
          500 and 917 ms.  Julian day 353 of 1994.

Listing of Revised Directory CCD_loT

dark/fuld001.353
dark/fuld002.353
dark/fuld003.353
dark/fuld004.353
dark/fuld005.353
dark/fuld006.353
dark/fuld007.353
dark/fuld008.353
dark/fuld009.353
dark/fuld00a.353
dark/fuld00b.353
dark/fuld00c.353
dark/fuld00d.353
lin_1000/fulld01.353
lin_1000/fulld11.353
lin_1000/fulld21.353
lin_1000/fulld31.353
lin_1000/fulld41.353
lin_1000/fulld51.353
lin_1000/fulld61.353
lin_500/full301.353
lin_500/full311.353
lin_500/full321.353
lin_500/full331.353
lin_500/full341.353
lin_500/full351.353
lin_500/full361.353
lin_700/full701.353
lin_700/full711.353
lin_700/full721.353
lin_700/full731.353
lin_700/full741.353
lin_700/full751.353
lin_700/full761.353
lin_700/full771.353
shut_1000/fulsd01.353
shut_1000/fulsd02.353
shut_1000/fulsd03.353
shut_1000/fulsd04.353
shut_1000/fulsd05.353
shut_1000/fulsd06.353
shut_1000/fulsd07.353
shut_1000/fulsd08.353
shut_1000/fulsd09.353
shut_1000/fulsd0a.353
shut_1000/fulsd0b.353
shut_1000/fulsd0c.353
shut_1000/fulsd0d.353
shut_1000/fulsd0e.353
shut_1000/fulsd0f.353
shut_500/fuls301.353
shut_500/fuls302.353
shut_500/fuls303.353
shut_500/fuls304.353
shut_500/fuls305.353
shut_500/fuls306.353
shut_500/fuls307.353
shut_500/fuls308.353
shut_500/fuls309.353
shut_500/fuls30a.353
shut_500/fuls30e.353
shut_700a/fuls701.353
shut_700a/fuls702.353
shut_700a/fuls703.353
shut_700a/fuls704.353
shut_700a/fuls705.353
shut_700a/fuls706.353
shut_700a/fuls707.353
shut_700a/fuls708.353
shut_700b/fuls741.353
shut_700b/fuls742.353
shut_700b/fuls743.353
shut_700b/fuls744.353
shut_700b/fuls745.353
shut_700b/fuls746.353
shut_700b/fuls747.353
shut_700c/fuls751.353
shut_700c/fuls752.353
shut_700c/fuls753.353
spec/fulw101.353
spec/fulw102.353
spec/fulw103.353
spec/fulw301.353
spec/fulw302.353
spec/fulw303.353
spec/fulw501.353
spec/fulw701.353
spec/fulw901.353
spec/fulwb01.353
spec/fulwd01.353
spec/fulwe01.353
shut_500/fuls30b.353
shut_500/fuls30c.353
shut_500/fuls30d.353