Horizontal banding Asi 174 mm

shamaal

Hi,

Ive just got my new Asi 174 mm and used it in a Lunt LS 60 H-Alpha PT. While working flawlessly and showing excellent results when mounted directly into the Blockfilter, I get very obvious horizontal banding as soon as I use a Barlow or Powermate (2x and 2,5x). Example shown below. Any clues?

Thanks for any help and kind regards

Lars

oaCapture-20150620-094222_g3_ap1033_conv.jpg

riklaunim

Those are Newton rings that can show up in solar telescopes. Try tilting the camera a bit or playing with Barlow position.

Sam@ZWO

tilter is suggested

shamaal

Hi Sam,

Thanks for the tip with the tilt adjuster, Ill check it out as soon as sun appears again in Northern Germany :)

Kind regards

Lars