Must contain a valid Themis EDR or a Themis RDR which has only been through radiometric calibration.

The name of the output Isis cube. If the input cube is a VIS image, the output file will have a ".even" and ".odd" inserted in the output name prior to the ".cub" extension.

The software assumes that the SCLK (spacecraft clock) recorded for an IR image is the time at which the first detector frame readout occurs. Apparently, the actual first readout can be delayed from this by the following amounts:

8 microseconds - PACI write 
0 to 1/30 sec - delay of the image acquisition after receipt of the command 
0 to 0.1 sec - delay for the command sending by the HPP code so that it is aligned on a 0.1 second boundary 

Currently, the software ignores these three because the 8 microseconds is a negligible fraction of the 1/30 second line rate and the other two are (apparently) variable and unknowable. However, this can result in an incorrect absolute position of as much as four pixels. Similar timing uncertainties probably are applicable to the VIS images. The effect of these timing uncertainties is primarily to potentially introduce errors in absolute coordinates in the along-track direction. This in turn can result in misalignment when mosaicking multiple observations together. The TIMEOFFSET parameter on "thm2isis" allows the user to apply a correction for this time delay, which can thus improve absolute coordinate accuracy and improve mosaic alignments. This offset is stored in the Instrument group of the output Isis cube as SpacecraftClockOffset.