DISA_0001 (aka DISA_IRASIM)
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Need a graphic to illustrate the IRAS native coordinate system: solar
elongation and observation inclination.

Clarify text on the number of iterations used in procedures associated
with survey scans and additional observations.

Documentation on "Additional Observations" (AO) image photometry needs to 
make clear the effective resolution of the re-processed images. What is the 
relationship between the pixels in the reprocessed image and the real 
resolution of that image?