About milkyway? This post is a red herring, but: I decided to go ahead and run the mapper on Cygnus, L33, L111, and the Galactic Center again. The pointing has gotten to the stage where I'm certain I can't do anything more without a stroke of pure brilliance or a conversation with someone who hasn't touched a thing - e.g. Jason - that suddenly enlightens me. In order to fully reproduce Meredith's results, I'd probably have to go back through and follow her 'pipeline' process step by step as well, and I suspect that, if I had used her method on her RA/Dec maps, I would have come up with exactly the same problem I currently see. Therefore, I won't do anything about it. I think the most appropriate response at this point MAY be to just fit a damned polynomial/sine curve in az and include that as part of the pointing model, but I can't justify where that comes from. All I know is that it's present in Meredith's data as well as my own. What's that next step with the PPSes? We need to do that. More important, though, is getting some image optimization ready FAST. I need to be running this stuff before September! Tonight's run will be a test of numbers of PCA components. At the very least, the v0.5 should have a consistent set of images even if we cut out the high-flux ones. We'll deal with that later. For the high flux objects, e.g. g34.3, since we have so much overlapping data, a simple average/magical baseline subtraction might be just as if not more effective than PCA subtraction, so that's one way around it.