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    Re: Dangerously radioactive navigation instruments
    From: Tony Oz
    Date: 2017 May 15, 09:32 -0700

    Hello!

    The tritium-powered red light tubes that I've ordered have arrived.

    It's a total disappointment - they are far, FAR too dim to illuminate anything. The photo at the seller's site could possibly be made with a VERY long exposure - like those necessary for breathtaking Milky Way pictures. My tubes glow in the darkness so they are just noticeable themselves, that's all...

    :(

    The only consolation I can invent for myself is that I still could not use an illuminated FREIBERGER even for lunar sights - without an artificial horizon I will not be able to measure heights in the darkness necessiating the use of scale's illumination. I should have thought of it first.

    :)

    Hope that helps someone intending to use tritium tubes in their sextants.

    Regards,

    Tony

       
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