NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Modification to 2102-D
From: Brad Morris
Date: 2009 Aug 10, 16:05 -0400
From: Brad Morris
Date: 2009 Aug 10, 16:05 -0400
Chief Franklin I am uncertain how the horizon, star and base disks are adjusted for my latitude. Your example shows us a 45N, which is one of the disks associated with the 2102-D. What if my latitude was 40N. I cannot use the 45N or the 35N or the horizon will be distorted. Does the base disk have the GMT of Aries for every day of the year? In other words, I am uncertain how these modifications work together with the 2102D to provide a new result or method. Best Regards Brad -----Original Message----- From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of QMCM Sent: Saturday, August 08, 2009 8:05 PM To: NavList Subject: [NavList 9421] Modification to 2102-D I will send picture when I find out how? The set up as shown on my Astronomer. Hope you can read the Base Disk? You DR. or yard at home. 45N,71W Feb 4 observer GMT 20:56. There are 3 disk involved 1 Base disk(carries all needed information,) 2 horizon Disk, 3 star disk. Place the horizon disk on the base disk and rotate it to 71w. Your sky and horizon is set up to your closest LAT & LONG. Find &Read the GMT at Feb 4= 20:56 off the base disk. You want to observe at GMT 8:38. The outer rim is GMT only. Add 20:56 and 8:38 together= 29:34 subtract 24:hours leaving 5:34. Place the star disk on the disk and rotate Aries to GMT 5:34. Done! your sky is set-up. It that easy and quick. Find the month & day, read the GMT add the Gmt that you want to observe, set Aries to that time. Note the 20:54 is equal to the start (GMT 00 of the day for Feb 4. Now you can advance time from 5:34 as desired 5:34 is really the observe time of 8:38. You can advance to any sky occurrence ,(rise set what ever you desire ) read the time off the base disk at Aries and subtract the Month and day time to get the GMT. Each degree equals 1 day and 4 minutes of time. This simple use, was made to educate and attract the young. The Astronomer was mad to teach Celestial Navigation. The instructor if he looks close will see every item of his course of instruction "Confidentiality and Privilege Notice The information transmitted by this electronic mail (and any attachments) is being sent by or on behalf of Tactronics; it is intended for the exclusive use of the addressee named above and may constitute information that is privileged or confidential or otherwise legally exempt from disclosure. If you are not the addressee or an employee or agent responsible for delivering this message to same, you are not authorized to retain, read, copy or disseminate this electronic mail (or any attachments) or any part thereof. If you have received this electronic mail (and any attachments) in error, please call us immediately and send written confirmation that same has been deleted from your system. Thank you." --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---