Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Stellarium, refraction, HP ---- YES!
    From: Jim Rives
    Date: 2020 Jan 14, 16:18 -0800

    Frank... it only took 10 minutes to find the error, once I got up the energy to plunge in.  Checked that I had written down the formulas correctly, counting parentheses etc., rechecked the data going into the variables, and was about to begin the tedius process of re-doing the calculations themselves.  But the last piece of data used in the Clearing section called for LDprecleared.  I had used the raw LDobserved. 

    So, using the right number:  

    LDcleared  by my recalculation             85d 09.3'

    Reed Nav calculator                              85  09.2' 

    Sorta feel like the time I successfully landed my first solo in a Piper Cub 26 years ago.  A lot of work, total concentration, tension, bumpy ride, and wheels touched down just at the stall horn bleats a bit!   And still Alive! 

    Thanks Frank, and all who have made suggestions.  I used to think I knew celestial nav ....one of those '70's era Navy navigators ;)  ... but now I am learning so much more.  I have now a new appreciation for all those captains and mates and quartermasters on sailing vessels for about 125 years or so who used these same techniques. 

    Moon's in distance Friday morning, 89d at 1000 EST and clear but cold weather.  Goin' huntn'....  

    Thanks again....

    Jim 

    43N  71W

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site