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HI Bojan,
Sorry, I have only been a member for a couple of years and had not seen your posting on the same subject. Your right angle finder looks great. What power does it give?
My device is very rigid, The prism is glued into the bracket with a steel putty. The Celestron finder is glued into 10mm Perspex which i secured to the bracket with three screws. The bracket has a profile which slides into the camera's rubber eye guard groove and it is held in place with a strong rubber band made out of old car tyre inner tube ;see pic.
Re the negative achromat, that was to serve as a mini Barlow between the two bino eyepieces (one serving as an objective lens and the other as an eyepiece). That concept was shelved when I went for higher power and used the Celestron 8X20 finder.
I have taken a pic of a till strip though the 350Dand added another pic of the till strip through the finder. In setting the finder up, I found that I had to focus my finder on the camera focus screen That's why I had to put in the white extension for close up focus (on one of the squares with the dot in the middle). Focussing on infinity did'nt work. I'm off to my observatory on the week end and will try the finder/focusser and will report back on how it works.
By the way, old car tubes make fantastic heavy duty bands which can be used for hundreds of attaching and clamping jobs in the workshop.
I hope your weather situation improves, I feel so sorry for the people who have lost so much. I wish them strength.
Clear skies
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