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Thread: Collecting Vintage Optics

  1. #31
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    Default Re: Collecting Vintage Optics



    I've uploaded the vintage camera photos I attached in a previous post since some were having a problem viewing. Apologize for any duplication...

    Dave

    P.S. Hope this works!
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  2. #32
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    Default Re: Collecting Vintage Optics

    Thanks Dave,

    that is a very nice collection of the cameras, which have written the history of the classic film and movies.

    Thanks for sharing,

    JG
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  3. #33
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    Default Re: Collecting Vintage Optics

    20141218_120109.jpg20140523_142625.jpg,.,Hello.,Here are my two vintage scopes.,the Sears(white) is from the mid 70's.,,,and the Meade is from the mid 80's.,,both were craigslist finds.,,and they both preform quite well.,,the Sears came with 3 of the .965 color coded EP's.,.and the whole set-up is in like new condition.,thank you JG for this great thread.,,O+O

  4. #34
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    Default Re: Collecting Vintage Optics

    Thanks Craterdavy for posting your Sears and Meade telescopes.

    Glad you are still keeping and using these scopes,

    JG
    Binoculars: Leica Ultravid 7x42, 8x42HD; Swarovski EL 8.5x42 Swarovision; Nikon 10x70 Astroluxe; Docter Nobilem 7x50 Porro; Jenoptem 7x50W, 10x50W; BA8: 10.5x70, 15x85; 25x100FB, AsahiPentax 8x40, Refractors: Sky-Watcher 150mm/750mm; Leica APO Televid 82mm (25x-50x WW ASPH); EPs:Baader Classic Orthos; Fujiyama ortho, Leica B WW, ultrawide zoom ASPH, Periplan GF, HC Plan S, L; DOCTER UWA; Wild UW mil; Tele Vue Delos, Nagler Zoom, Plössls; Swarovski SW; Pentax XW; ZEISS diascope B WW T*, Carl Zeiss E-Pl; Hensoldt mil; Filters: Astrodon, Astronomik, Baader (CCD), TS;
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    Default Re: Collecting Vintage Optics

    I'd love to find an old typewriter.
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  6. #36
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    Default Re: Collecting Vintage Optics

    Seven draw telescope by Ramsden in London

    Hello all

    The 7 draw Ramsden's telescope is at the moment the oldest historical telescope in my little collection, but still in a good useable condition.
    The main tube of the telescope has the Dollond's achromatic doublet, patented by Peter Dollond in 1758, as shown in the first attached picture. The main tube is covered with mahagony painted black.
    With its 7 draws fully extended, the length is 55.5 cm, as shown in the second picture. In the 6th draw there is the Scheiner's optics erecting system for the correct view, and in the 7th draw is the Huygens eyepiece.
    More details on the design of the Ramsden's telescopes can be found in http://fp.optics.arizona.edu/antique...20-%20SPIE.pdf

    The telescope is engraved on the 7th draw: Ramsden London. The art of this inscription is similar to that as pictured in the Royal Museums Greenwich Pocket telescope - draw tube inscription - Jesse Ramsden - Royal Museums Greenwich Prints , but later than the 'ancient' inscription in A rare achromatic Telescope by Jesse Ramsden | Fleaglass Antiques For Sale
    Together with its technical design, I would date this telescope towards 1780.

    Another historical telescope in my collection has been posted in 2011 in Kleines Hand-Teleskop von "Plößl in Wien"

    Thanks for reading and looking,

    JG
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  8. #37
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    Default Re: Collecting Vintage Optics

    Hi JG. Excellent pictures of your vintage Ramsden telescope. It looks to be in immaculate condition. I also enjoyed the link to your earlier post of the Kleines Hand Teleskop von Plossl. I am always impressed with the quality of craftsmanship and brass fittings in the older telescopes. Thanks for sharing these wonderful pictures or your fine collectable telescopes with us JG, and the best of regards.
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  9. #38
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    Default Re: Collecting Vintage Optics

    Hello all,

    a recent post by not_Fritz Argelander about his renewed interest into the spectroscopy in astronomy has been a good reason to dust off one of my vintage prisms for spectroscopy.

    The attached picture shows a prism with the polished sides 8cm x 15cm, in fact the largest light dispersive prism in my collection. A pencil of light rays passes the prism, and a color pattern is visible to the left.

    These large prisms have been used in the spectrographs still about 50 years ago, and through the decades before. The dispersive prisms have been later replaced with gratings.

    Thanks to the prism spectroscopes and spectrographs, the dark absorption lines (Fraunhofer lines) in the light of the Sun have been discovered, and later, the stars have been classified also according to their spectra.
    Maybe, the most important discovery as related to the astrophysics, has been the red shift in the recessing galaxies.

    Best,

    JG
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    Default Re: Collecting Vintage Optics

    When I was a child a neighbor had a vintage spectroscope in his basement. I think he built it himself IIRC. My memory is a bit fuzzy, so I don't know if it used a prism or a diffraction grating. But I was fascinated by the film holder. A curved affair about 1 foot long into which he would load a strip of 35mm film. As I say, my memory is very fuzzy on this, I only saw it once, but I recall there was a heck of a lot of shiny brass involved.
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    Default Re: Collecting Vintage Optics

    Quote Originally Posted by combat48 View Post
    I've uploaded the vintage camera photos I attached in a previous post since some were having a problem viewing. Apologize for any duplication...

    Dave

    P.S. Hope this works!
    That photo takes me back. When I was a kid, a friend's dad was a press photog. he'd let us use his spare 4x5 speed graphics (I think he had a had dozen) and have the rin of his darkroom. Man that was fun. I've never used a format that large since. We would go around the neighborhoods, offering to take pictures of people's houses for them. I think we charged a buck. A few kind souls took us up on the offer. I'd don't have any copies but I would guess that they were pretty pitiful ;-)
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