I ended up finding an old Mead EQ mount on CL, had to completely disassemble it. clean & lube up everything as I re-assembled it, then instead if putting the clam shell back on I installed a dove tail clamp.
Then on the C90, because it came with a mount that was not dove tailed, just a pad with 1/4" hole in it for a camera type tripod, I removed that and installed a short dove tail on the ota with pop rivets,,,,,,,
Just like the factory did with the original camera pad, but I also added washers inside to reinforce the grip of them, I removed the corrector plate to access the inside of the OTA, nothing to it, no harder than removing the other end.
Thing with the C90, with all the light available during the day I can magnify up to 450X with detail, so if the bird still has crumbs on it's belly left over from breakfast I can tell you what it had to eat,,,,
Still waiting for a Nagler T6 2.5 to pop up in the classifieds, missed a few of them while I was on break from this place, no big deal I Barlow my Nagler T6 5 but still I think I'd like to get one.
Geese, sorry Elsie, started to ramble, it's an old man thing,,,,,
Just thought of something, with the 102 being a tight radius the base of the Telrad may not seat itself well, they're designed for larger OTA's,
The Benway adapter may be a good option but then you'd have to install another shoe,,,,,
You know what I would do is to install a shoe up on the dew shield of that scope, it will move the Telrad way forward like a cannon sight, actually a very nice place for it to be, a bit bulky looking but not heavy by any means.
I used the Baader Sky Surfer red dot on my brothers refractor that way, he loves it there, and it's probably going to replace my Telrad on my other scopes because it just looks like it should be there and not a like a brick with a window on top, never did like that about the Telrads.
The Sky Surfer finder has a bunch of mount options for different finder shoes, unlike the Telrad which has only one, the one for the Synta/Vixen shoe is very robust so I mounted a SV shoe on his dew shield with double sided sticky tape like I described on one of my earlier replies on this thread, and that little bugger ain't movin' round a bit.
But since designing and building my cell phone bracket for my scopes I haven't used the Telrad.
It's very successful finder option, these guys say it doesn't work but then again these guys failed at their attempts to design & build one so I guess because they can't do it no one else can,
There I go again, rambling on,,,,,,
Go luck on your ventures Elsie, I've got to go back and work now and won't be back for a while.
Edited by SloMoe, 01 April 2020 - 07:31 AM.