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Astrojensen
sage
Reged: 10/05/08
Posts: 217
Loc: Bornholm, Denmark
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Re: Asahi Pentax 60mm
06/28/09 12:33 PM
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Hi Patrick
I may not have been very clear on this, but there was never a Zeiss model called the E60. I call my telescope this, because it has a 60mm "E" objective (doublet achromat, either Steinheil or Fraunhofer type, both f/14). The model name of the telescope is "Asedabais", which is simply the codename for ordering this specific model through telegraph or mail.
If the same model had a "A" objective (doublet kurzflint apochromat, f/17.5), it was called "Asalven". A triplet "B" objective (broken triplet apochromat, f/14, in early versions you could choose from f/12 to f/15 and very early "B" objectives are symmetrical designs) meant it was called "Asalvento". These three names were if the mount had slow motion controls. If these were not fitted, the model numbers were "Asedadme", "Asalvenme" and "Asalveo", respectively. I think you can see why I simply call it the "E60"! Some time after WW1, the six models were simply renamed the "Asegur" and then you ordered the objective and accessories you needed, though there was a basic version.
Oh, and I have a rare version, as my "Asedabais" comes with a Fraunhofer-type "E" objective, and the standard was the Steinheil configuration. You had to specifically order the Fraunhofer version when ordering. When was the last time you saw a commercial 60mm with the choice of four different objectives?
Clear skies!
Thomas, Denmark
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