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Re: 1491 The year China discovered longitude
From: Frank Reed CT
Date: 2004 May 9, 14:19 EDT
From: Frank Reed CT
Date: 2004 May 9, 14:19 EDT
George H wrote:
"I think Trevor is wrong here. " etc.
Hmmm. I don't (on that particular point you quoted). I think you may have read what he said differently. I understood him to be disagreeing with the idea that you need timing info from a clock of some sort. And that's correct: you don't. All that's required is the local sidereal time of some specific event (U2 or U3) in the eclipse recorded at various different sites, and that "LST" is nothing but the identity of the star on the meridian.
Frank R
[X] Mystic, Connecticut
[ ] Chicago, Illinois
"I think Trevor is wrong here. " etc.
Hmmm. I don't (on that particular point you quoted). I think you may have read what he said differently. I understood him to be disagreeing with the idea that you need timing info from a clock of some sort. And that's correct: you don't. All that's required is the local sidereal time of some specific event (U2 or U3) in the eclipse recorded at various different sites, and that "LST" is nothing but the identity of the star on the meridian.
Frank R
[X] Mystic, Connecticut
[ ] Chicago, Illinois
