Hello to all,
After solving the identity of that zoom eyepiece I wanted to introduce myself and share about things Goto and others and show couple pictures of my 1957 Model 105 100m f/15 refractor. I have been observing since '96. Mostly focused on modern Maks and all years Questar and Quantum. Also have owned many modern APOs. Now working on using my vintage scopes more frequently. This Mod 105 I got about nine years ago along with a Nihon Seiko (parent of Unitron) 50mm Satellite scope. According to the second owner (I am the third), they came over from Japan together with a returning US serviceman, so these were not imported per se. The scope came with the obligatory Huygens in 6, 12.5, 18, 25mm and the T30-AH40mm dual purpose eyepieces. It also came with a full set of Goto orthos - 4, 6, 9, 12.5, 18 and 25mm. Then there is a tubular image erector and the projection device. Also a spectrometer attachment for the eyepieces with three lenses and a hand spectroscope, those marked Goto in cute little green and red octagonal boxes. A lot of other little doo-dads like Goto labelled silica packets, and some hand written notes in Japanese. The lens has an amazing star test and the motor works fine at 110VAC. I was fortunate to own a 4" Unitron with weight driven clock drive also from 1957 so fun to compare. The Goto has better optics so the Unitron is in someone else's collection now. I also have a 60mm f/20 Goto with possibly the best star test of any of my vintage scopes (as may be expected from the f/20). Still have a number of Unitrons including a very nice 75mm EQ and assorted more common ~60 and ~75mm Japanese box refractors. Have both 3" and 4" Edmund refractors and original mounts that establish the value line for my larger vintage scopes, though even those provide wonderful images with even Edscorp eyepieces. Certainly vintage, I am fortunate to own the full line (70, 85, 100, all f/12) of Pentax's early ED refractors late 70's-80's, the 100 on pier. As I work through some of these I expect I will have some questions, and looking at some of your scope ownership lists, I am sure I will get some great information in response to those.
Thanks for comments. Very impressed with all you all know and expect to learn a lot more about many of my vintage telescopes.
Edited by Stew44, 22 March 2017 - 03:05 PM.