new THEMIS color releases, Images showing color variations. Options

[DDAVIS]

First of a new series:

http://themis.asu.edu/zoom-20060622a

[djellison]

A similar design was used for MARCI as well, sort of half-push-broom-half-discreet-ccd, and looking through that paper, it looks like at utter barsteward to process - why would one choose that over a normal pushbroom?

Doug

[mcaplinger]

A similar design was used for MARCI as well, sort of half-push-broom-half-discreet-ccd, and looking through that paper, it looks like at utter barsteward to process - why would one choose that over a normal pushbroom?

We call this a "pushframe" system. An N-color pushbroom system needs N separate linear CCDs and N different signal chains. An N-color pushframe needs one area CCD and one signal chain. MARCI weighs 350 grams; it would be simply impossible to build a linear pushbroom system for anything like that mass.

As for the difficulty of processing: who cares? Computers are fast and cheap.

See http://www.msss.com/mro/marci/images/2006/...tail/index.html