Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Recommended Posts

Could anyone with camera lens knowledge educate me as to what caused the moon shaped stars in the following image? It was a borrowed lens that I've now given back and it was a lot shorter than I wanted but I'm still intrigued. I'm assuming that stopping it down would have helped but I didn't have a Canon body to do the deed.

Canon 24mm/Atik 314L, 55"/pixel

Baader Ha filter, 12 x 10min subs with no calibration frames

24mm Heart and Soul.png

  • Like 1
Link to post
Share on other sites
Quote

I'm assuming that stopping it down would have helped

correct

you could cut a peice of card to cover the front of the lens,then cut a smaller diameter hole in centre of the card to allow less light in

or pick up a cheap m42 lens,which you just use the manual stops on 

  • Like 1
Link to post
Share on other sites
4 minutes ago, bogdog said:

correct

you could cut a peice of card to cover the front of the lens,then cut a smaller diameter hole in centre of the card to allow less light in

or pick up a cheap m42 lens,which you just use the manual stops on 

Gah! I should have thought of the card trick last night.

Do you know what causes the flares though?

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.