Watermark symbols on a 60mm
Posted 06 November 2006 - 04:02 AM
Does anyone know what the watermark on my Swidt 839 60mm refractor might mean.. It looks like a combined AMA, or AVA, in an oval shape. I would be interested if anyone knows where Swift got their optics in the early 60s..
This is a wonderful scope, smooth mount, beautiful views and a joy to use. It would be nice to know where (assuming Japan) these were made and by whom.
Thanks a bunch
Posted 06 November 2006 - 04:06 PM
Is your Swift 839 an old scope, because after googling it, I found a listing for it on a well-known online camera store? Here's their description:
The Swift #839 Searcher has a 60mm objective lens, heavy rubber armor, and fully coated lenses. It comes with a turret which rotates to provide either straight through or 45 degree viewing and contains two orthoscopic eyepieces, 20x and 40x. Optional accessories include a 30x and 50x eyepiece, a close-focusing lens which allows focusing to 15 feet which is a must for bird watchers, sunshade, and rubber eyecup.
If you google "Swift telescopes," you may learn quite a bit about it history.
Posted 06 November 2006 - 05:48 PM
[Note: The opening sentence should read: Swift Instruments Inc. is one of America's oldest existing optical houses, having been founded in 1926 by Robert W. Swift.]
Whatever their source of optical glass, it is GOOD! My experience is that their glass mix is as good or better than a fine Unitron refractor's objective lens in the same aperture class. This may be a result of Swift's careful combination of glass selection (center-pot) and fine figuring.
Posted 06 November 2006 - 10:10 PM
online camera store? Here's their description:
The Swift #839 Searcher has a 60mm objective lens, heavy rubber armor, degree viewing and contains two orthoscopic eyepieces, "....
I believe Swift has a "new " model839 out, a spotting scope as described here. Mine is a classic , though the best built I have ever seen, 60mm, F13.5 astronomical refreactor Circa 1961. A beautifully smooth GEM mount, all wood box and tripod.. the only medeoicre parts are the Huygens eyepices, but even those were better than most I have in my odd collection...