QHY163M fine tuning side effects

Well, nothing really happened fortunately 🙂  “Side effects” here means only one more target that I was able to picture last night, when I have been adjusting flattener distance. It looks that testing phase is close to the end, time for some “real work”. For narrowband tests I have chosen Cygnus Wall (part of NGC7000 nebula) – it is bright (at least in hydrogen band) and was conveniently placed last night. I collected 60 minutes of H alpha, the same amount of Oiii band, and 3×16 minutes of RGB signal, conditions very modest and exposure time as well. So here it comes:

Cygnus Wall, 6x10 minutes Ha
Cygnus Wall, 6×10 minutes Ha
Cygnus Wall, 6x10 minutes Ha, 6x10 minutes Oiii, 3x8x2 minutes RGB
Cygnus Wall, 6×10 minutes Ha, 6×10 minutes Oiii, 3x8x2 minutes RGB

Other components as usual: TS Photoline 130mm refractor with 0.79x reducer sitting on EQ6 mount.

Clear skies!

4 thoughts on “QHY163M fine tuning side effects”

  1. Hi, the images are awesome!!

    I would like to buy this camera; but I want to know if there is a problem with vignetting with 1,25″ filters.

    Thanks a lot,


    1. Hello Marcelo,

      Thanks 🙂 For filters – it depends on distance between filter and sensor and the focal ratio of telescope. With regular QHY filter wheel you will start to have slight vignetting with 1.25″ filters with telescopes f/6 and faster. Then for f/5 and faster vignetting becomes more visible. But there is a solution from QHY that can make distance between camera and filters shorter http://qhyccd.com/bbs/index.php?topic=5659.0 . These adapters should be available soon to buy, and then you can use 1.25 filters also with faster scopes.


  2. Hi Lucas, I’m going to use the camera in a Skywatcher ED80 (80/600), f/7.5.

    So, according to your opinion, I wouldn’t have vignetting.

    Good news!!

    Thank you very much for your help!!

    1. If you use flattener without reduction, so you keep f/7.5 no vignetting should occur.

      Clear skies!

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