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    Re: Longitude by Sunrise example
    From: Greg Rudzinski
    Date: 2012 Aug 5, 09:58 -0700

    Here is what the on-line Umland sight reduction shows for the lower limb Sun on the horizon at the time you have stated from a height of eye of 1 meter (sitting in a small boat).


    [NavList] Re: Longitude by Sunrise example
    From: Greg Rudzinski
    Date: 5 Aug 2012 09:40
    Orjan,

    I would like to figure out the length of your fishing line. To do this I need the Kamal height in millimeters that you observed from the horizon to the lower limb and your height of eye.

    Greg Rudzinski


    [NavList] Re: Longitude by Sunrise example
    From: Örjan Sandström
    Date: 5 Aug 2012 05:26
    Interesting, I was on my way home from fishing Aug 3 and when I caught the moment,
    I estimated sunset at GMT 19:29:04 Ap was N 64° 42'E 021°22'
    temp was 17°C and pressure was 1014milibar
    Kolbe's LTA for sun data and calculator gave me lop 2.4' towards and Az 313°.

    OK I admit,as I was within sight of land I cheated and used a quick kamahl (fishing line and a piece of 35x10x10mm wood) I adjusted line length so wood covered sun from left to right turned it 90° to estimate lower limb touching horizon.
    -

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