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    Re: Lunerian Apprenticeship
    From: Francis Upchurch
    Date: 2017 Jan 6, 11:35 -0000


    Just to add to my confusion, I tried your sight 1 with the Thompson abbreviated method and got a GMT of 8.17.29. (closer to your 8.23 approx time)

    I’m not even sure if this method is appropriate for Venus lunars. I’m sure Frank would know. It mostly deals with parallax corrections for the moon. It also has a mysterious 3rd correction which Thompson kept secret, but  I doubt whether it deals with Venus issues.

    Anyway, hoping to hear the correct result to work out what I am doing wrong here.

    Best wishes



    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of David C
    Sent: 06 January 2017 04:04
    To: francisupchurch---.com
    Subject: [NavList] Re: Lunerian Apprenticeship


    Here are last night's results  using Frank's calculator. I allowed the calculator to determine the altitudes of Venus and the Moon.

    Sight 1

    Error in Lunar  -1.5'

    Error in long  45.8' (approx 3 min time?)

    Sight 2

    Error in lunar -3.9'

    Error in long 1° 57.6' (30 min time?)

    Sight 3

    Error in lunar  0.3'

    Error in long 07.5'  (approx 30 seconds time?)

    I reworked sight 3, using my observed altitudes

    Error in lunar -0.8'

    Error in long  22.5'  (approx 1.5 min time?)

    Referring to the altitude observations my old school teacher would say Must try harder.

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