Re: [guide-user] Lunar eclipse on Guide

Jan Manek Jun 22, 2000

At 22:47 21.6.2000 +0900, Masaki Kouda wrote:
>It seems Earth's shadow is little small.

Hi all,

I had about month ago private email exchange about this with Bill, part
of his last mail is quoted below :

> Then I remembered that, when computing lunar eclipses, it's
>usual not to use the exact diameter of the earth. Instead, a
>diameter increased by 2% is used. I'd used this in computing the
>tables of lunar eclipse data, but _not_ in computing the shadowed
>area on the lunar bitmap. Once I fixed that, all worked correctly.

That was on May 20, 2000 and I think that Bill had already uploaded
that corrected version. I didn't checked if this is really working now.

Jan

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Jan Manek
Stefanik Observatory Private :
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