Quote:
Originally Posted by torana68
thanks for the info, I'd guess that the cast parts were on the market by '74, you must have just missed out ! how did they perform? any photos?
Roger
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If you mean the wooden main mirror cell? Not very well, it wasn't refined in its adjustments and didn't hold place very well. It used course 3/8 round headed bolts that served as the mirror floatation points and colomation adjustment. A little bump and it was out. The sort of stuff of home made ATM. The later cast model was simple but excellent, even preferable to basic stuff from America. No photos of the wooden MM cell, sorry. If I find any photos of the scope, I'll PM them.
The spider and flat holder were typical AOS. I think the R+P was a "Royal" for 1"" ep. The finderscope was little 19 mm Unitron. The eq mount was a "Royal" (LNT4)? model with single piece wooden legs and spike tips.
The mirror seemed to be OK optical quality. I sold it 20 years ago.
I do have an AOS 10" F5.6 Newt form the late 80's. (white tube) w/ Samson eq mnt. A/C drive and corrector. The mirror seems decent quality. I recently downsized the secondary to 1.83" with a new spider and holder. Which just fits in for a 1/2 inch fully illuminated field. I moved the Main mirror a couple of inches back years ago. Using the Royal 1.25 R+P with could be low profiled with one of A. Geddes tiny ep collars.
Looks very promising with a 50 mm obstruction rather than the old 60 mm. (make my air cells straight saith the Lord)
The 10" ain't a bad scope for an antique. I only bought it S/H for a laugh and it is proving to be a seriously good instrument.
I'm working on giving it a straight Unitron 8 X 50 finder (late era SCT brackets) that I'm trying to chop to right angle. (been using a Telrad) I managed to get the rear flange bushing out with the aid of acetone. Now if I can get the ep collar out of the bushing I might be able to mate a Carton star diagonal which has a screw thread front.