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    Re: Star-to-star distance for sextant calibration?
    From: Tony Oz
    Date: 2019 May 20, 11:26 -0700

    Dear Michael,

    There is nothing to read in Russian - it says "~10 times measure the star-Polaris angle, average to minimise the observation errors, then apply the refraction corrections from Annex#2 (pp.290-291). The obtained value should be compared with the relevant value from the Annex#3 (p.292). Plot all the differences (from all the stars) extrapolated at multiples of 10° for later use".

    That's it.

    I'm meditating staring at Annex#2 - no avail. How should I use them? Yes, I know my latitude, I know Kochab's altitude. From these I get some value and add it to the value from Annex#3. But what should I do with those mystic columns - the (φ-D) and (φ+D)? The "D" is, I guess, the 16,6° in Kochab's case. I'm stuck completely here...

    Please comment.

    Warm regards,
    Tony

    60°N 30°E

       
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