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: Backyard winter sextant observatory?
    From: Jared Sherman
    Date: 2005 Apr 19, 20:19 -0400

    Jim-
     I'd expect the plexi (and curved plexi for a dome will be Real Damned
    Expensive) to cause distortions and be a nusinace to keep clean. It would
    probably be simpler, and way cheaper, to get a propane-fired infrared
    heater, or a pair of them. They come as floor models, or pole-mounted models
    designed to heat outdoor areas in the winter. If you put up a windbreak that
    came up to shoulder height, plus an IR heater to keep that area warm, I'd
    bet you could pull the whole thing off on the cheap and keep an obstructed
    view of the entire sky and horizon.
    
     Now, as to making temperature corrections for a pocket of 65F air on a -20F
    day....don't ask me!
    
    
    

       
    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