QUOTE(Owen Phairis @ Sep 22 2008, 06:30 PM)
Fascinating, Thanks Ron.
What I do not understand is that a former worker at the Vanderbuilt told me that the Vanderbuilt projector is a "Jupiter class" projector and that there was only one other ever built and that it is located in Japan. Now, is it really a 'Saturn class', and how does it compare with the L1? Were there ever any other L1s built?
Lots of questions from a guy who has a sincere interest in the Goto line of projectors....
I don't think that any of the original Zeiss design L-1's were ever built. There were probably some patent issues involved. The only L-1's ever built (as far as I know) were the Vanderbilt and the St. Louis machine. There may have been more that were installed in Japan but I doubt any survived. I base this pure conjecture on the fact that the current president of GOTO came over to the Vanderbilt just recently and bowed to the projector in reverence to his grandfather.
The Jupiter class was originally an M-2. The S-1 was designed as competition for the Spitz A-1. The S-2 you know well. As far as I can tell the lineage is as follows.
J-1 ~ Competition for the Spitz Jr. (I have never seen a picture)
S-1 ~ Competition for the Spitz A-1 (I have never seen a picture) (Possibly became a "Mercury" but I'm not all sure.)
S-2 ~ As you know, complete optical projection of the celestial sphere.
S-3 ~ Small projector with motor driven planets. Became "Venus"
M-1 ~ Medium projector and I believe the most manufactured. Became "Mars"
M-2 ~ Medium projector for larger dome then above. Became "Jupiter"
L-1 ~ Large projector. Became "Saturn"
All of the projectors are based on the Morrison design.
The book GTTS specifically mentions the Vanderbilt as a custom modified Saturn projector.
A little later the "E" series was introduced with the number following the "E" to indicate the design dome size in meters. Today we have the E-3 for a 10 foot dome and the E-5 for a 16 foot dome.
The S-3 or "Venus" evolved into two projectors. The GE II and the GS-AT. It appears to follow the design of the original "Venus" and remains a mechanically driven projector.
The M-1 or "Mars" has been replaced by a totally new design called the GSS-Chronos.
The M-2 or "Jupiter" has been replaced by a totally new design called the Super Uranus.
The L-1 or "Saturn" has been replaced by a totally new design called the Super Helios.