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.

sgl_imaging_challenge_banner_dslr_mirrorlesss_winners.thumb.jpg.9deb4a8db27e7485a7bb99d98667c94e.jpg

Recommended Posts

Traditionally it is a tube with a lens in it that doubles the magnification of any eyepiece you slot into it. These days you can get different step-ups in magnificaiton depending on the barlow purchased. Some types give you 2.5x, 3x or 4x the magnifcation. Hope that helps :D

Share this post


Link to post
Share on other sites

Hi.

A barlow is a device doubling or tripling the magnification of a ep depending on the focal length of your scope. For example, I have a 102mm refractor with a focal length of 500mm, so if I use a 25mm without using a barlow, that gives me 500/25=20x magnification. If I used the same ep with a 2x barlow, It would make the image 40x bigger, so effectively you have two eps using a barlow.

They are very useful; I would recommend a Tal barlow from FLO, I have one myself and they are £35.

Hope that helps.

Rick.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • 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.