Back to forums

Image Round Reflection

ZWO ASI2600MM DUO Askar FRA500 Request for feedback Artifacts Help Needed
1 reply•107 views
Asgardian92 avatar
Asgardian92 avatar
Hello everyone, noob here. Can someone might identified what this round reflection on my photos might be? Seems to appear on every  target that I shoot. I thought its was a dirty lens but that's not the case. My current setup:
  • Askar FRA500
  • ASI2600mm DUO
  • 2" filter wheel
  • LRRGB and Narrowband filters
  • 0.7 Reducer


thanks,

Jonny Bravo avatar
Jonny Bravo avatar
It's dust. One of the reasons we take flats is to calibrate that out.
Well Written
Related discussions
M51: Ideas for the fuzziness
Hello everyone, I need some help/tips/critiques to understand an issue that i see with the following image of M51: https://app.astrobin.com/i/aiuc5p The data is from a Seestar S50, 310 x 10 s subs from Bortle 4-5 skies. My Pixinsight processing workf...
Mar 7, 2025
Both posts are from beginner astrophotographers seeking help from the community to diagnose technical issues they're experiencing with their imaging equipment and results.