I'm not sure where a question like this should go, but since this thread has the most recent activity and it was on the MARS coverage I'll ask here in hopes of getting an answer.
While watching one of the PI produced YouTube tutorials on the MultiscaleGradientCorrection tool I took notice of a statement that seemed to suggest that if a single MARS image did not cover the ENTIRE field of view as represented in the user's image then that MARS image/data would not be used during the gradient correction. If this is true then doesn't that mean if a user's wide-field image exceeds the coverage that is available in any SINGLE MARS image for the field in question then the gradient correction will fail and report that no data is available?
It seems that I've run into this exact problem with an image that I took with a full-frame camera and a 50mm camera lens (the Voigtlander APO-LANTHAR 50mm F2). What I mean is that the current MARS coverage map seems to include all of the sky that this image covers and yet when I run MultiscaleGradientCorrection it fails with the no data error for my RGB image. I've even tried to crop the image to a smaller coverage that is definitely shown as covered in the MARS map and it still fails. But, after I crop to a much smaller coverage (about 30% of the original) the gradient correction works.
If what I suspect is true then it would seem likely that many wide-field images would fail to work with MultiscaleGradientCorrection simply because there is no single image in the MARS database that covers the entire field that was recorded in the user's image.
Does anyone know the answer to this?
