Hi Alexander,
All the flatbed scanners that I use and know of have the scanning light at an angle.
I can scan glossy papers etc and not even a hint of reflection.
you images are mostly on black fairly flat surface so that is not a problem
with reflection.As far as subtle nebulae and faint sketching a good scanner will always pick this up every time just need the scanner settings set correctly which is easy to do. I restore old photographic images and some of them you can barely make out any detail with fading.
photoshop enhances these very well. With scanning any thing bigger than a4 or a2 I scan in 3 or 4 or more scans and stitch them together in photoshop and you have a perfect big image with no joins.I often have to scan large maps etc that are bigger than a3 or a2 with some scans up to 20 photoshop will stitch these well.
What model scanner do you use.Is it a flat bed type?
Peter
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