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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. * 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: |
|| 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) || see above || ||MCLENTMP || NTX (1,3) || see above || ||MCROETMP || NTX (1,4)|| see above || ||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)|| see above || ||SCLENTMP || NTX (2,3)|| see above || ||SCROETMP || NTX (2,4)|| see above || ||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) || see above || || PCLENTMP || NTX (3,3) || see above || || PCROETMP || NTX (3,4)|| see above || || 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)|| see above || || SC_QY || QT(2)|| see above || || SC_QZ || QT(3)|| see above || || 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:|| |
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) |
see above |
MCLENTMP |
NTX (1,3) |
see above |
MCROETMP |
NTX (1,4) |
see above |
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) |
see above |
SCLENTMP |
NTX (2,3) |
see above |
SCROETMP |
NTX (2,4) |
see above |
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) |
see above |
PCLENTMP |
NTX (3,3) |
see above |
PCROETMP |
NTX (3,4) |
see above |
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) |
see above |
SC_QY |
QT(2) |
see above |
SC_QZ |
QT(3) |
see above |
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