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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Very Bright Comet
    From: Frank Reed CT
    Date: 2007 Jan 13, 01:19 EST
    There is one more chance to catch a glimpse of this comet for those of us in the northern hemisphere. It may be visible in *daylight* for a few more days. These are the approximate offsets in Declination and SHA from the comet to the Sun for the nest few days at 0 hours GMT:
     
    day       dDec     dSHA
    13         4.7       -4.5
    14         1.2       -5.3
    15        -2.6       -5.9
    16        -6.3       -6.4
    17        -9.7       -6.6
     
    For noon CST (e.g. for Chicago), you want to interpolate 75% of the way from one date to the next. So for tomorrow Jan. 13 at noon CST, the comet is about 2.1 degrees north of the Sun and about 5.0 degrees to the left. That's pretty close but the distance opens during the next few days. Since the comet is very bright, if the sky is clear it will be visible as a bright fuzzy star in binoculars. The trick is that you have to look very close to the Sun. Do this carefully! Stand next to a tall building to obscure the Sun.
     
    And if you prefer the armchair approach, you can watch the comet live at the SOHO web site:
    (for those of you unaware, many minor comets have been discovered by armchair amateurs studying these SOHO images --but, no, you don't get your name on it by this discovery method)
     
    -FER
    42.0N 87.7W, or 41.4N 72.1W.
    www.HistoricalAtlas.com/lunars

    --~--~---------~--~----~------------~-------~--~----~
    To post to this group, send email to NavList@fer3.com
    To , send email to NavList-@fer3.com
    -~----------~----~----~----~------~----~------~--~---

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID 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