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| Just as a side note, spacecraft time is needed to use CK kernels while epoch time is needed for spk kernels. Spacecraft, UTC, and epoch time can be transformed into one another pretty easily using spice, which SPC uses, so it is unclear why two types of time are included in the OSIRIS-REx make_sumfiles.in. However, Bob Gaskell probably knows why. | Just as a side note, spacecraft time is needed to use CK kernels while epoch time is needed for spk kernels. Spacecraft, UTC, and epoch time can be transformed into one another pretty easily using spice, which SPC uses, so it is unclear why two types of time are included in the OSIRIS-REx make_sumfiles.in. However, the legendary Bob Gaskell probably knows why. |
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make_sumfiles.in
This text file, make_sumfiles.in, is an input for the make_sumfiles executable and an output (created by) from process_img. The text file contains 5 columns which are the image name loaded into process_img, spacecraft time of each image, camera number that took the image, spacecraft number for mission, bin (not sure what this means), and UTC time of each image. Essentially, make_sumfiles.in is a list of the images files needed for make_sumfiles to create SUMFILES and NOMINALS. The vectors in the sumfiles and nominals are calculated directly from the kernels in make_sumfiles.txt by using the time for each image obtained from make_sumfiles.in.
The user should be aware that the example about to be shown is in the format necessary for the OSIRIS-ORex mission. UTC time may not be needed for other missions and the spacecraft time might be in another format.
Just as a side note, spacecraft time is needed to use CK kernels while epoch time is needed for spk kernels. Spacecraft, UTC, and epoch time can be transformed into one another pretty easily using spice, which SPC uses, so it is unclear why two types of time are included in the OSIRIS-REx make_sumfiles.in. However, the legendary Bob Gaskell probably knows why.
Example From OSIRIS_Rex
P595650043F2 1/0595649979.53969 3 1 1 2018-11-16T14:19:35.816_ P595650073F2 1/0595650009.53969 3 1 1 2018-11-16T14:20:05.816_ P595650103F2 1/0595650039.53969 3 1 1 2018-11-16T14:20:35.816_ P595650136F2 1/0595650072.53969 3 1 1 2018-11-16T14:21:08.816_ ...
Example From Other Mission
FC21A0014662 377642737:125 2 1 1 FC21A0014663 377642812:125 2 1 1 FC21A0014664 377642887:126 2 1 1 FC21A0016638 379008279:125 2 1 1 ...
Another Example
