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怎從照片上環形山的影之長度知道環形山的高度 ?

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發表於 2008-1-6 13:05:25 | 顯示全部樓層 |閱讀模式
怎從照片上環形山的影之長度知道環形山的高度 ?

謝謝!
發表於 2008-1-6 22:30:27 | 顯示全部樓層
First, find out the date & time of the photo exposure

Second, find out the selenographic longitude of the lunar terminator (or its colongitude) from a reliable ephemerides, such as this freeware
http://www.grischa-hahn.homepage.t-online.de/astro/winjupos/

Third, follow the examples in this article for the calculations
http://paganastronomy.net/lunarcrater.html.

Alan Chu
發表於 2008-1-6 22:33:23 | 顯示全部樓層
(Correct links)

First, find out the date & time of the photo exposure

Second, find out the longitude of the lunar terminator (or its colongitude) from a reliable ephemerides, such as this freeware
http://www.grischa-hahn.homepage.t-online.de/astro/winjupos/

Third, follow the steps in this article for the calculations
http://paganastronomy.net/lunarcrater.html

Alan Chu
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