90° right angle polar scope eyepiece.

[wookie1965]

Although this is not a DIY one and your prepared to wait a bit these are brilliant so you dont have to get on your knees to polar align.

https://www.ebay.co.uk/itm/1-25x-2-5X-Machine-Right-Angle-Finder-Viewfinder-Viewfinder-for-for-Niko-R7F5/323389648924?hash=item4b4b86701c:g:aRYAAOSwxXRbbQsw

https://www.ebay.co.uk/itm/Polarscope-adapter-for-Seagull-Neewer-x2-5-right-angle-viewfinder/133249681971?hash=item1f064cca33:g:4k4AAOSwP8dcE407

Brilliant piece of equipment.

 

[Alien 13]

They sure are great bits of kit, had my RA viewfinder a few years now and they certainly save your back and knees.

Alan

[Alan White]

Omegon make a ready done one I believe.

[wookie1965]

32 minutes ago, Alan White said:

Omegon make a ready done one I believe.

£85 I would rather save over £40 for the same thing.

Edited December 10, 2019 by wookie1965

[Alan White]

Just noticed our fine forum sponsor also sells one under the Astro Essentials range at £69
and no printed plastic looks to be involved.

https://www.firstlightoptics.com/adapters/astro-essentials-right-angled-eyepiece-for-polar-scopes.html

 

Edited December 14, 2019 by Alan White
typos of course

[Tailspin45]

Had an Asahi Pentax right angle finder from the early 70s in a box.

Removed the camera slide-on bracket and used the four tiny screws to fasten it to the polar scope eyepiece cover. Ta-dah.

Thank you for the inspiration.