Right, so after the unsatisfactory first test on April 28, here is my next test of that 90/1250 Maksutov Cassegrain.
Camera: Canon1000d, ISO 400, 1/60 s (as recommended by RickJ, I pushed the ISO level a bit)
Here is just one of the images I took tonight. No stacking, no prost-processing other than cropping. This is how it came off my camera chip.
Basically, what I wanted to test is what kind of sharpness to expect from this little Mak. I have become better in focusing that during my first fumbling attempts (though I still miss a Crayford two-speed focuser).
Looking at the visible detail around Copernicus, in the Sinus Iridum or down in Clavius, I'd say it's not so bad. Better than I had feared, based on my previous experience with that scope, at any rate.