TS and Orion US bino viewer - zero backfocus, no corrector needed

[Louis D]

16 hours ago, 25585 said:

This one seems reasonably priced https://www.teleskop-express.de/shop/product_info.php/info/p291_TS-Optics-1-25-inch-Erecting---Amici-Prism---90----upright-andcorrect-image.html

I have the Celestron version, and it works fine in a 60mm finder scope with a 19mm Konig eyepiece.  I've never experimented with it in my 72ED.  I may just have to give it a go to see how it compares to my WO dielectric.  Flexure would be my biggest concern with heavy eyepieces.

[niallk]

Came across this review:

https://yporti.blog/2018/01/13/review-binoviewer-els/

(I used Google translate...)

[PeterW]

Any additional info, I am honking of trying this for daytime use with a refractor, sounds like I might need to go straight thru or buy a “pentaprism” diagonal... not a normal 90degree or 45degree erecting image? Looks like I can avoid taking a hacksaw to my scopes if this device works.

Peter