Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

SW Evostar 150 f8 achromat - collimation?


Recommended Posts

The older ones branded Helios and Konus are generally fitted with a non-collimatable objective lens cell but the later ones and all the ones branded Sky-Watcher have objective cells with a push-pull screw type collimation facility.

Edit: I did note that the latest "black diamond" Sky-Watcher Evostar 150's seem to have gone back to a non-collimatable objective cell, if the photos of them are accurate.

Link to post
Share on other sites

My old Helios doesn't have any, Ken, but a favourite trick was to hold the tube vertically with the EP end restiong on the ground and then tap the tube with your fingers for a few minutes!

Olly

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

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.