Images are stored with PDS labels, but are otherwise unprocessed and uncalibrated. The HTML document will direct you to other informational documents and the image browser for rapidly viewing the image collection. Although this dataset has not been calibrated, and the algorithms for calibration are still being developed, we here describe some of the relevant calibration parameters. The MOC uses programmable gain and offset states, commanded on the ground prior to image acquisition, to condition the CCD output signal prior to its digitization to 8 bits. This leads to the operational complexity of predicting the scene brightness in advance and selecting appropriate parameters.
All offsets are positive.
In-flight values for the fixed parameters in the above equation are still being derived from flight data. Work is ongoing to define these algorithms. Future volumes will include more information. Processing included packet decommutation, removal of the MOC communications protocol headers, and decompression. No additional geometric or radiometric processing was done.