This is my first ever astrophotography work. Did a milky way project last month in Crater Lake, but DSO is something totally different so
I spent a bit of time combing through CN discussions regarding photographing M31. One useful information I got is that the total integration
time is key, which is critical for doing backyard AP in my Bortle 5/6 area.
Equipment-wise, mine is a pretty standard AP beginner set:
- iOptron SkyGuider Pro + iPolar
- WO Z61 Mark II + Flat61A + Optolong light pollution filter
- Fujifilm X-T2
Some technical details:
- Session 1: 9/22, 30" x 30
- Session 2: 9/23, 30" x 201
- Session 3: 9/24, 30" x 283
- Session 4: 9/25, 30" x 270
- Flat/DarkFlat/Dark/Bias: 50/50/30/50
- Stacking: Astro Pixel Processor
- Post-processing: Photoshop
Given my equipments, what should I do in order to get as many details of M31 as possible? Two most obvious places I can see:
- Polar alignment. Stars near the edges of the frame are not rounded.
- Comparing to other M31 works, my background stars appear to be "bigger." My guess is focus is not spot on, even though I saw clear diffraction patterns.
Comments and suggestions are welcome. Thanks and clear nights!
Edited by HoloTheWolf, 26 September 2020 - 08:36 PM.