NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Henning Umland's programs?
From: Peter Hakel
Date: 2013 May 9, 06:12 -0700
From: Peter Hakel
Date: 2013 May 9, 06:12 -0700
Samuel,
In the sun.xls spreadsheet you can inspect the value of Delta T (in seconds) in cell B16, which comes from fits provided in:
http://eclipse.gsfc.nasa.gov/SEhelp/deltatpoly2004.html
that are encoded in columns J,K,L. Additional details are at:
https://en.wikipedia.org/wiki/Delta-T
Peter Hakel
From: Samuel <Look@ipadRing.net>
To: pmh099@yahoo.com
Sent: Thursday, May 9, 2013 5:32 AM
Subject: [NavList] Re: Henning Umland's programs?
He also will only reply, maybe, to help requests via fax. I kid you not!
In the sun.xls spreadsheet you can inspect the value of Delta T (in seconds) in cell B16, which comes from fits provided in:
http://eclipse.gsfc.nasa.gov/SEhelp/deltatpoly2004.html
that are encoded in columns J,K,L. Additional details are at:
https://en.wikipedia.org/wiki/Delta-T
Peter Hakel
From: Samuel <Look@ipadRing.net>
To: pmh099@yahoo.com
Sent: Thursday, May 9, 2013 5:32 AM
Subject: [NavList] Re: Henning Umland's programs?
Umland doesn't provide any information about what format you're to use when entering minute and seconds figures. I have no idea whether I'm to enter .5' or 30' to represent 30 minutes of angular measure (using his sun sight program you mentioned).
He also will only reply, maybe, to help requests via fax. I kid you not!
What is the delta T about in this program? http://www.celnav.de/longterm.htm
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