Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.


red dwalf

help with focus problems please

Recommended Posts

hi all,

i`m unable for some reason to get the stars, especially big bright ones to focus properly, i`ve tried taking the reducer flatner off and just having a extension tube connected to the camera / filter wheel straight into the focuser and they still look the same, on one side it looks like an egg ! starting to drive me made and not sure what the problem is, everything i can think of is tight including the focuser, the equipment i`m using is a William Optics GT81, starlight filter wheel and an atik 460 camera, i`ve added a couple of pictures to show the focus is good using a bantinov mask and a 1 second image of vega, any ideas gratefully received. 


Share this post

Link to post
Share on other sites

I don't think it's your focus. Looks more like lens aberration. Might be easier to tell if you post up an image of your target area.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.