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    Corrections for air bubble sextants
    From: Juanjo Garrido
    Date: 2022 Jul 29, 07:32 -0700


    Thanks all for contributing to this forum. It is pretty unique and full of interesting people.

    I have been always interested in celestial navigation. After reading a little bit, watching some YouTube videos and following this forum, I decided to move on and I got a Kollsman periscopic sextant and a Mk. IX bubble sextant. I went for bubble sextant as I live in Central Europe with no access to big water masses. I know that I could have gone for an artificial horizon and a regular sextant, but I have always been fascinated with aircraft instruments, so I couldn't resists. 

    My problem now is that I am not sure about doing correct observations. All the tutorials I have found are for regular sextants, and I'm afraid that not all the corrections apply. Or it might be that there are others corrections to be done. Is this assumption correct?

    How different is to make an observation with a marine sextant and a bubble sextant? Could you point me to a document/tutorial/article?

    Could you help me finding my way? 

    Thanks in advance.

    Juan J. GARRIDO.

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