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Amateur Spectroscopy over 100 years ago

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  • 8 November 2018 at 12:00 pm #574169
    Kevin Gurney
    Participant

    I was browsing the ‘vintage’ back issues of the BAA Journal (on DVD) and came across this from 1909… Is it an early StarAnalyser!?

    I see it was awarded prizes in the Franco-British exhibition, and for about 60p or so, you get two extra lenses and a ‘Morocco case’ (leather?)

    Kevin

    Attachments:
    1. old_spectroscope_JBAA_Vol_XIX_No7_1909

      old_spectroscope_JBAA_Vol_XIX_No7_1909.JPG

    8 November 2018 at 6:13 pm #580198
    Robin Leadbeater
    Participant

    Hi Kevin,

    Yes I believe the Zolner was indeed a direct vision spectrograph using a grating. (It may actually have been a grism) The cylindrical lenses were used to widen the spectrum to make the lines more visible.  I think it was mounted after an eyepiece, making effectively a collimated design with the eyepiece  acting as the collimator and the eye as the camera lens so perhaps more like a forerunner of the ALPY operated slitless. The basic price works out at around £200 in today’s money

    Robin

    9 November 2018 at 7:58 am #580202
    Mr Jack Martin
    Participant

    How to work with the spectroscope by John Browning 1878 Cambridge library collection lists McLean’s star spectroscope for £2 10 0 !

    Jack

    Essex UK

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