For all these years I've skipped on doing flats and always thought "Nah.... not necessary". For some reason, I thought..."hmm... maybe I should give it a try?"
I borrowed a white t-shirt from my wife (she wondered why my telescope wanted to have a t-shirt), and off I went!
And out of curiosity I stacked images in DeepSkyStacker WITH flats and WITHOUT flats, and processed them exactly the same way (exactly the same steps/adjustments in Photoshop) just to see how big the difference was.
The equipment used was a WO ZS 71, 0.8x reducer, Canon 600Da, Astronomik CLS filter, AstroTrac TT320X-AG, 92 x 60s exposure, under a bortle 8 sky.
Why have I been so ignorant and skipped flats?! I will ALWAYS take flats from now on.
Edited by Takashi, 14 October 2021 - 01:00 PM.