Why My Andromeda Images Looked Worse After Stacking (And How I Fixed It)
I spent over five hours imaging the Andromeda Galaxy from my Bortle 9 backyard, and the stacked image looked worse than some of my single exposures. When I opened it in GraXpert, I could barely see the stars I expected. The background was patchy, and the stars that did show up looked swollen and blown…
