I wanted to share with you two of my recent finds that became a GOTO reunion. I have to thank one of our own CN members (Bob) for the opportunity to acquire a GOTO 80mm semi-apo 12.5 OTA. I had done some research on GOTO before acquiring this gem and in the back of my mind thought what are the chances of mating this classic GOTO with the mount it was designed for? My intention was to try and find the elusive Mark-X mount that these scopes were designed with. They show up now and then in the Japanese market but don't last long as they are highly regarded mounts in Japan. GOTO Opt started the Mark-X project in the 1970's after their market of school telescopes became saturated. There is an excellent article on the history of the Mark-X on GOTO optical blog site and it is an excellent read. I won't go into details here on the history but much of engineering details we find so essential in our modern mounts we owe some of their lineage to a few Japanese companies and one of those was GOTO.
I want to start with some of the details of my Mark-X mount. My plan was to use it for several sessions, maybe a month, and then write up my findings. After a week of putting the Mark-X together and taking it back apart, confirming the tracking and completely enjoying its engineering from the 1970's I could not wait any longer. There is no denying just looking at it there is a clear lineage still used on some of the better GEM mounts being made today. My goal is not to say this mount is better than X or Y is better than Z but just to share what I find. This will likely take me a few posts, so bear with me, as I want to point out some of the details that still make this mount a robust "multi purpose equatorial system". I will start with a few pictures here and try to add something every day. Note the mount itself is complete and original but minus the original tripod legs......(working on that). For now it resides on a Vixen aluminum tripod.
The mount came with the following sub-systems:
1: GOTO MX-1 base model, RA incl polar finder
2: MX-2 DEC shaft
3: MX-3 Base mount
4: MX-4 Universal Plate
5: MX-50 tube holder for 95mm OTA
6: MX-10 qty:2 3.3kg counter weights
7: MX-28 comet tracker motor drive with dual axis control and manual
8: GOTO Mark-X original catalog
GOTO meet GOTO
Edited by PawPaw, 17 August 2020 - 11:25 PM.