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Thread: light sources for optical testing

  1. #11
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    Default Re: light sources for optical testing



    That will definitely keep you out of trouble for awhile
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  2. #12
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    Default Re: light sources for optical testing

    Hello not_Fritz,

    I am using for the CA tests the H-Beta, OIII (it is not necessary), Solar Continuum (e-line), and the H-Alpha filters from the astronomy accessories.
    Zeiss has manufactured the F-e-C plus some more metal interference filters with the 7nm or less bandpass for testing the CA, and they are the accepted laboratory standard world wide. Still available from time to time on the eBay in Germany, I have seen them last year.

    Otherwise, there are gratings from the Zeiss spectrometers on the market, for about 60 EUR at the moment.

    And one more otherwise,
    I have the Zeiss SPM-1 prism monochromator in a very good optics condition, just the mechanics should be brushed off and lubricated, https://www.google.com/search?q=Zeis...aMdTOkoIkBKhM:
    Should you like to have the SPM-1, yes you can, but you must come over to Germany and bring it yourself to the U.S.
    It should not be a problem, as our Ziegelstein International (Nürnberg Airport) has still some flights to the U.S.
    The Airforce Fürth has been turned into the BMW Golf Range, my favourite.

    And again otherwise,
    should you need anything related to the spectroscopy we can find in Germany, then let me know.

    Best,

    JG
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  3. The Following User Says Thank You to j.gardavsky For This Useful Post:

    not_Fritz_Argelander (01-09-2019)

  4. #13
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    Default Re: light sources for optical testing

    Thanks JG. It looks like I am pretty well set since I have the same interference filters already.

    This is part of "the packing problem". The interference filters, light sources and micrometer for focus measurement are all packed and ready for the move west. So I am good with rewarding myself with a new refractor or two.

    Now I only need to decide how much of the remaining lifespan I want to use on building the Houghton. There is a lot of stuff for that that I need to decide to pack for move or dispose of in some way.

    Thanks again.
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