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Arc shapes

From: Bill (no email)
Date: Fri Oct 22 2004 - 18:37:47 EDT

  • Next message: Fred Hebard: "Re: Nautical Almanac Usage"

    A follow up question to help me visualize relationships.

    I could plot Hc against azimuth for several dates, but I am hoping the more
    learned among you have a quick visual answer.

    Assume a fixed position of N40, W 90. If I were to plot Hc for Sun each
    minute it would form an arc.

    Now assume I do this on winter solstice, an equinox, and summer solstice.

    I understand the Hc will shift by approx. 23d 26.4' along the y axis between
    dates, and the the summer solstice arc will extent furthest out on the x
    axis.

    My question is, if I slid all three plots together, would the curves be
    similar (again noting there will be areas missing in the equinox and winter
    solstice plots)?

    Thanks

    Bill


  • Next message: Fred Hebard: "Re: Nautical Almanac Usage"



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