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    Re: Relearning CelNav and Lunars for Antarctica
    From: Brad Morris
    Date: 2019 Oct 10, 15:24 -0400
    Hi Chris

    Welcome and permit me to express my jealousy about your trip!  Antarctica!!  Wow!

    Have you considered pre-computing lunar distances for your trip?  Frank offers, at reednavigation.com/RNav/lunars_pre_v5.html
    The ability to do so.  You merely plug in your dates, and the expected latitude/longitude.  Make sure to check visible at DR only and useable only.  For example, you visit Elephant Island on Dec 25th.  61°8'S 55°7'W.   Santa is mean to you, there are no lunar distances available on that date from Elephant Island.  However, if you are there on Dec 20th, the entire day offers visible lunars within sextant range vs the sun.

    If I were you, I would somehow take a Lunars class with Frank before my journey.  Practical.  Hands on lunars, advised by an expert.

    The other thing I would practice is Noon Latitude.  How fun to measure how far south you are!!  

    How do you intend to measure UTC?

    Brad

     

    On Thu, Oct 10, 2019, 2:18 PM Chris Lamousin <NoReply_Lamousin@fer3.com> wrote:

    I am going to be going from the southern tip of South America to Antarctica this December. 25 years ago I took the long celnav course from Mr. Treworgy using Susan Howell's book. My hope is to be able to take some sightings and reduce them when I get home as part of the trip. I don't know how much room I'll have for plotting on board, so I'm trying to go light. My first step is to learn lunars for practice. I'm brand new to lunars and would appreciate any breadcrumb trails on learning them.

    Thanks,

    Chris

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