NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Fw: need another formula
From: Guy Schwartz
Date: 2006 Jul 9, 22:10 -0500
Thank you.
Guy
----- Original Message -----
From: <FrankReedCT@aol.com>
To: <NavList@fer3.com>
Sent: Sunday, July 09, 2006 7:56 PM
Subject: [NavList 617] Re: Fw: need another formula
>
> Guy, you asked:
> "Can someone share with me the formula to obtain the values that appear
> on
> the Table "Correction to Tabulated alititude for minutes of declination?"
> e.g.
> d= 48
> minutes = 45
> answer from chart = 36"
>
> Well, let's see... d is the rate of change in the spherical triangle
> solution per degree of declination change. So if we convert 45 minutes to
> degrees by
> dividing by 60 and then multiply by d... yep, I get 36. So the formula
> would
> be
> correction = (minutes/60)*d.
>
> I don't have any sight reduction tables here to check against. Try a few
> other examples, and let me know if it works.
>
> -FER
> 42.0N 87.7W, or 41.4N 72.1W.
> www.HistoricalAtlas.com/lunars
>
>
> >
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.9.10/383 - Release Date: 7/7/2006
>
>
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To , send email to NavList-@fer3.com
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From: Guy Schwartz
Date: 2006 Jul 9, 22:10 -0500
Thank you.
Guy
----- Original Message -----
From: <FrankReedCT@aol.com>
To: <NavList@fer3.com>
Sent: Sunday, July 09, 2006 7:56 PM
Subject: [NavList 617] Re: Fw: need another formula
>
> Guy, you asked:
> "Can someone share with me the formula to obtain the values that appear
> on
> the Table "Correction to Tabulated alititude for minutes of declination?"
> e.g.
> d= 48
> minutes = 45
> answer from chart = 36"
>
> Well, let's see... d is the rate of change in the spherical triangle
> solution per degree of declination change. So if we convert 45 minutes to
> degrees by
> dividing by 60 and then multiply by d... yep, I get 36. So the formula
> would
> be
> correction = (minutes/60)*d.
>
> I don't have any sight reduction tables here to check against. Try a few
> other examples, and let me know if it works.
>
> -FER
> 42.0N 87.7W, or 41.4N 72.1W.
> www.HistoricalAtlas.com/lunars
>
>
> >
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.9.10/383 - Release Date: 7/7/2006
>
>
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
