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⇤ ← Revision 1 as of 2017-12-26 09:33:32 →
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← Revision 2 as of 2017-12-26 09:42:45 → ⇥
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Deletions are marked like this. Additions are marked like this.
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 * BITPIX - BITPIX - This sets the flag in SPC for how many bits to treat the data. Everything is eventually converted into unsigned integer. For ORex, this is 16. The camera is a 14-bit imager, but the SPOC will pad the leading bits to 0 to make it a simple unsigned 16-bit integer. IF a LUT (look-up-table) is used, the SPOC will convert the 8-bit LUT into the standard 16-bit integers.  * BITPIX - BITPIX -- This sets the flag in SPC for how many bits to treat the data. Everything is eventually converted into unsigned integer. For ORex, this is 16. The camera is a 14-bit imager, but the SPOC will pad the leading bits to 0 to make it a simple unsigned 16-bit integer. IF a LUT (look-up-table) is used, the SPOC will convert the 8-bit LUT into the standard 16-bit integers.
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 * DATE_OBS - UTC0 - The UTC time of the observation. This is converted within SPC via SPICE into ET, setting both ET0 and ET.  * DATE_OBS - UTC0 -- The UTC time of the observation. This is converted within SPC via SPICE into ET, setting both ET0 and ET.
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 * EXPTIME - EXP - The duration of the exposure. It is used to calculate the midpoint of the exposure. This is _____ used for OREx.  * EXPTIME - EXP -- The duration of the exposure. It is used to calculate the midpoint of the exposure. This is _____ used for OREx.
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 * SCLK_STR - CLK0 and CKLUSE - This is the spacecraft clock. If this value is set in the FITS headers, it is the primary time used to calculate the midpoint of the exposure.  * SCLK_STR -- CLK0 and CKLUSE - This is the spacecraft clock. If this value is set in the FITS headers, it is the primary time used to calculate the midpoint of the exposure.
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 * MCFWHTMP - NTX (1,1) - MapCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file [[DN2TEMP.TXT]]. This assumes a linear mixing of the four camera temperatures.  * MCFWHTMP - NTX (1,1) -- MapCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file [[DN2TEMP.TXT]]. This assumes a linear mixing of the four camera temperatures.
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 * SCFWHTMP - NTX (2,1) - SamCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file [[DN2TEMP.TXT]]. This assumes a linear mixing of the four camera temperatures.  * SCFWHTMP - NTX (2,1) -- SamCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file [[DN2TEMP.TXT]]. This assumes a linear mixing of the four camera temperatures.
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 * PCFWHTMP - NTX (3,1) - PolyCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file [[DN2TEMP.TXT]]. This assumes a linear mixing of the four camera temperatures.  * PCFWHTMP - NTX (3,1) -- PolyCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file [[DN2TEMP.TXT]]. This assumes a linear mixing of the four camera temperatures.
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 * NCCHTEMP - NTX (4,0) and NTX (4,1) - NavCam temperature
 * TCCHTEMP - NTX (5,0) and NTX (5,1) - TAGCam temperature		  * NCCHTEMP - NTX (4,0) and NTX (4,1) -- NavCam temperature
 * TCCHTEMP - NTX (5,0) and NTX (5,1) -- TAGCam temperature
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 * SC_QA - QT(0) - Quadterians  * SC_QA - QT(0) -- Quadterians. OREx will write the spacecraft pointing information, as of when the image was taken, into the FITS header. [[process_fits]] will output them in the file [[quaternions.txt]] in the format PICNM, QT(I), I=0,3
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 * BZERO - DDN and SIGNED
 * INSTRUME - INAME		  * BZERO - DDN and SIGNED -- FORTRAN reads all integers as signed. If the data should be unsigned, then the DN values less than zero are converted into high-bit values

 * INSTRUME - INAME and NC -- This is the name of the instrument in human-readable form. It sets the variable NC as follows:
    || INSTRUME || NC ||
    || MAP || 1 ||
    || SAM || 2 ||
    || POL || 3 ||
    || NCM || 4 ||
    || NFT || 5 ||
The order of this is important because the camera number is the reference that SPC uses for camera ID within the configuration files [[make_sumfiles.txt], [[DN2TEMP]], and [[FLATFIELD.TXT]]

process_fits reads the following keywords and sets the variable.

  • BITPIX - BITPIX -- This sets the flag in SPC for how many bits to treat the data. Everything is eventually converted into unsigned integer. For ORex, this is 16. The camera is a 14-bit imager, but the SPOC will pad the leading bits to 0 to make it a simple unsigned 16-bit integer. IF a LUT (look-up-table) is used, the SPOC will convert the 8-bit LUT into the standard 16-bit integers.
  • DATE_OBS - UTC0 -- The UTC time of the observation. This is converted within SPC via SPICE into ET, setting both ET0 and ET.

  • EXPTIME - EXP -- The duration of the exposure. It is used to calculate the midpoint of the exposure. This is _ used for OREx.

  • SCLK_STR -- CLK0 and CKLUSE - This is the spacecraft clock. If this value is set in the FITS headers, it is the primary time used to calculate the midpoint of the exposure.
  • NAXIS1 NPX)
  • NAXIS2 (NLN)
  • CAMERAID (CAM)
  • MTR_POS (FLT)
  • LUT (LUT)

  • MCFWHTMP - NTX (1,1) -- MapCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file DN2TEMP.TXT. This assumes a linear mixing of the four camera temperatures.

  • MCFWMTMP - NTX (1,2)
  • MCLENTMP - NTX (1,3)
  • MCROETMP - NTX (1,4)

  • SCFWHTMP - NTX (2,1) -- SamCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file DN2TEMP.TXT. This assumes a linear mixing of the four camera temperatures.

  • SCFWMTMP - NTX (2,2)
  • SCLENTMP - NTX (2,3)
  • SCROETMP - NTX (2,4)

  • PCFWHTMP - NTX (3,1) -- PolyCam temperature. The final algorithm has not been decided yet. However, the weighting of each temperature can be adjusted in the file DN2TEMP.TXT. This assumes a linear mixing of the four camera temperatures.

  • PCFWMTMP - NTX (3,2)
  • PCLENTMP - NTX (3,3)
  • PCROETMP - NTX (3,4)

  • NCCHTEMP - NTX (4,0) and NTX (4,1) -- NavCam temperature

  • TCCHTEMP - NTX (5,0) and NTX (5,1) -- TAGCam temperature

  • SC_QA - QT(0) -- Quadterians. OREx will write the spacecraft pointing information, as of when the image was taken, into the FITS header. process_fits will output them in the file quaternions.txt in the format PICNM, QT(I), I=0,3

  • SC_QX - QT(1)
  • SC_QY - QT(2)
  • SC_QZ - QT(3)
  • BZERO - DDN and SIGNED -- FORTRAN reads all integers as signed. If the data should be unsigned, then the DN values less than zero are converted into high-bit values
  • INSTRUME - INAME and NC -- This is the name of the instrument in human-readable form. It sets the variable NC as follows:

    • INSTRUME

      NC

      MAP

      1

      SAM

      2

      POL

      3

      NCM

      4

      NFT

      5

The order of this is important because the camera number is the reference that SPC uses for camera ID within the configuration files make_sumfiles.txt], [[DN2TEMP, and FLATFIELD.TXT

FITS Keywords (last edited 2018-05-20 19:11:23 by BMittan)