Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Re: Index checks with laser and without
    From: Alexandre Eremenko
    Date: 2007 Jan 4, 12:35 -0500

    Dear Ken,
    I mostly take Lunars from my balcony.
    Only once (in fall 2006) I took them
    from a nearby Nature reserve area
    (1 mile away) and the average error was +0.8'
    and pretty consistent in 3 DIFFERENT star-lunar distances.
    I mean I used 3 different stars.
    {}From the balcony about 50% of all Lunars are perfect
    (that is the averages are within 0.2')
    But another 50% have errors of 0.4' to 1'.
    On Thu, 4 Jan 2007, Ken Muldrew wrote:
    > On 3 Jan 2007 at 23:45, Alexandre E Eremenko wrote:
    > > What makes it really strange is that the error
    > > when present is usually constant in long series.
    > > So averaging does not help. I would almost say
    > > that it is constant during a day... though this is
    > > not always so. It looks like it depends on...
    > > weather:-) Thopugh I understand that this idea
    > > is absurd. Some new kind of strong abnormal refraction
    > > in Indiana?
    > Does this intermittent error only show up when you take lunars from a
    > particular location (e.g. your balcony) or have you also suffered from it
    > in other locations?
    > Ken Muldrew.
    > >
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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