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Old April 26th 08, 12:04 PM posted to uk.sci.astronomy
Mike Dworetsky
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Posts: 715
Default Equation of Time

"Les Desser" wrote in message
...
I am preparing a presentation on the Equation of Time and have been trying
to find a clear description, preferable with diagrams, of the adjustment
due to obliquity.

The explanation at the National Maritime Museum
http://www.nmm.ac.uk/server/show/conWebDoc.351 only makes sense if you
already know the answer

The best I could find was the page at
http://www.wallingfordclock.talktalk.net/Sidereal%20Time.htm but I still
find it inadequate.

The example of the bus going down the incline is good to show the slowdown
but I cannot find anything appropriate to explain the speeding up.

Has anyone seen and better presented explanations?
--
Les Desser
(The Reply-to address IS valid)


I recommend the following web site:

http://www.analemma.com/

There is a diagram, possibly what you are looking for, that separates the
obliquity and eccentricity effects, at the Royal Observatory web site:

http://www.nmm.ac.uk/server/show/conWebDoc.351

Try also wikipedia on both topics.

--
Mike Dworetsky

(Remove pants sp*mbl*ck to reply)