[X] My Assistant

[MouseOnMars]

Happy New Year

After reading this Universe Today story it got me back into using ISIS and the PDS. ISIS3 looks very nice with it's new GUI . But I cannot find the source image for the "Dust Front" image published in the article. I have pinpointed it's location to Noctis Labyrinthus but the published image has no source image number. I wonder if this is because it has not been released into the PDS ?

[MouseOnMars]

OK. I mentioned the digital camera more as an analogy as the instruments on MRO are not really photographic instruments per se. But there is still a CCD --> Data --> Final product pipeline.

What I'm not clear about is if MARCI or HiRise instruments do any processing on the MRO probe apart from compression. Is all the processing done on Earth using ISIS or whatever ?

[mcaplinger]

What I'm not clear about is if MARCI or HiRise instruments do any processing on the MRO probe apart from compression.

MARCI and CTX do "companding" from the sampled 12-bit ADC values to 8 bits, typically using a square-root table inside the instrument. I think HiRISE does the same thing from its 14-bit samples. You could call this compression, I guess, though it is intended to be effectively lossless.