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: Rude star finder
    From: Gary LaPook
    Date: 2015 Dec 24, 23:37 -0800

    Comparing the standard 2102-D with the CP-300/U I prefer the 2102-D.

    The scale is larger which makes a big diference in reading it. The space from the pole to the equator on the star base of the 2102-D is 57mm and on the CP-30/U is only 45mm making the -D 27% larger. 

    The CP has an extra disk that in marked with longitude 180 degrees in each direction. This allows you to set the star base GHA Aries on the zero mark on the extra disk, turn the index of the disk with the curves to point at the longitude and then it is automatically set to LHA Aries. Nice, but unnecessary. How hard is it to add or subtract your longitude to GHA Aries to find the LHA?

    The CP also weighs considerably heavier, the device weights 6.6 ounces while the -D is only 2.5. The entire kit is also much heavier, in the case with the base and the nine disks wieghs 18.9 ounces while the -D is only 11.3 ounces. 

    gl

       
    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