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.

AnotherJohnH

That loupe looks like an EP hmm...

Recommended Posts

Starting to get to grips with my first telescope and thinking about extra/better eye pieces. Currently have the supplied cheap 25mm and 10mm Kellners. I already have a fairly expensive (I think it was ~£60) Horizon 6x loupe. Its intended purpose was to help focus the image on the ground glass of a large format camera, but it looks just like a telescope eyepiece. A quick web search would seem to indicate it might have a focal length of 35mm. Counting the reflections from a bright lamp I would guess it has at least 3 elements. Maybe it's like a Kellner? Unfortunately it has a 1 1/2" barrel but balances well enough on a 1 1/4" mount to be focused.

Seeing wasn't great tonight, but first impressions are surprisingly good, field of view was good, focus up to the edges seemed good. But need to try again on a night with better seeing.

Any one else tried a photographer's loupe as an eyepiece?

Edited by AnotherJohnH

Share this post


Link to post
Share on other sites

Most of the Loupe magnifiers are Hasting Triplets.

Certainly usable as a low cost eyepiece......

Share this post


Link to post
Share on other sites

Many if not most of the modern "monocentric" planetary eyepieces are reportedly triplets of the Steinheil, Hasting, or other similarly cemented designs.  Edge correction may not be terrific, but in the center, your loupe should be fantastic.

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.