Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Which Barlow?


Recommended Posts

Hi all,

Determined to get some nice large and detailed images of Saturn this year. I used a 2x barlow for jupiter which was fine, and now I have motors I think I can go higher.

I used a FOV calculator online and 5x looks fine. Can anyone confirm? [sW 200P and Philips Toucam Pro II]

The big question: which make/model barlow?

Thanks

Pete

Link to comment
Share on other sites

Just be aware that Saturn's surface brightness is much lower than Jupiter, you will nedd 3-4 times the exposure with the same rig. Going from 2x to 3x barlow will double that again ... seeing quality then becomes a real issue as you need to keep exposures reasonably short if you're going to have any sharp frames to work on.

I'd try Saturn with the 2x barlow before you get carried away with image scale.

If you're operating in the zone where seeing issues dominate (and/or inaccurate focussing, which is increasingly likely with large, blurry images) then scaling up a small image in post processing will work as well as capturing at at larger scale, and is much easier to do.

Link to comment
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
 Share

  • 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.