Hi,
2009/2/8 Jos Kint
> Hello sundialists around the world!
>
> Who can help me? I am looking for the algebraic relation between the
> Equation of time and the eccentricity of the earth orbital. It will help me
> for calculating this eccentricity with my own sun dial.
> Chris Lusby Tailor gave
post you question on the discussionpage or here.
Thomas
> Message: 1
> Date: Sun, 8 Feb 2009 17:37:52 +0100
> From: "Jos Kint"
> Subject: earth eccentricity
> To:
> Message-ID: <710893ff42584f9185165f206bbe7...@mijnvriendin>
> Content-Type: text/plain; chars
On Sun, Feb 08, 2009 at 11:38:02AM -0800, Tom Kreyche wrote:
> Here are a few references in books, I'm sure there are others on the web:
>
>
>
> "Astronomical Algorithms" by Jean Meeus, Second Edition, Chapter 28.
>
> "Explanatory Supplement to the Astronomical Almanac", Seidelmann et. al,
> S
by Robin Green, 1985, Section 10.6
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Jos Kint
Sent: Sunday, February 08, 2009 8:38 AM
To: sundial@uni-koeln.de
Subject: earth eccentricity
Hello sundialists around the world!
Who can help me? I am looking
Hello sundialists around the world!
Who can help me? I am looking for the algebraic relation between the Equation
of time and the eccentricity of the earth orbital. It will help me for
calculating this eccentricity with my own sun dial.
Chris Lusby Tailor gave me a nice hint with the Ptolemaios
L PROTECTED]>
Cc:
Sent: Thursday, August 21, 2008 2:05 PM
Subject: Re: Earth eccentricity
>
> I am not recalling the details, but a few years ago I read an excellent
> book "The Sun and the Church," about the meridian lines placed in a few
> cathedrals in Europe, to hel
I am not recalling the details, but a few years ago I read an excellent
book "The Sun and the Church," about the meridian lines placed in a few
cathedrals in Europe, to help predict the date of Easter. Apparently,
the information gathered from these giant and precise meridian lines was
suffici
Dear Jos,
Yes, great idea indeed and everything Chris
Lusby Taylor says is correct except one thing:
> Timing the equinoxes is relatively easy...
> Tough luck if that turns out to be during the
> night!
Don't be put off. You can time the instant of
the equinox perfectly well even if it happens
ds Werner
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Jos Kint
Sent: Thursday, August 21, 2008 10:12 AM
To: sundial@uni-koeln.de
Subject: Earth eccentricity
Hello all,
I am looking for some help in observing the earth's orbital
eccentricity, just by using my sun dia
hat a great project. Let us know what results you get.
Chris Lusby Taylor
51.4N 1.3W
- Original Message -
From: Jos Kint
To: sundial@uni-koeln.de
Sent: Thursday, August 21, 2008 9:11 AM
Subject: Earth eccentricity
Hello all,
I am looking for some help in observin
Hello all,
I am looking for some help in observing the earth's orbital eccentricity, just
by using my sun dial. Who gives me some hint? With my vertical 2,5 meter by 1,5
meter sun dial I can measure the local solar time with an accuracy of less
than 60 seconds.
Jos Kint, Belgium-
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