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From: Chuck Griffiths
Date: 2002 Mar 21, 11:38 -0500

```Bruce brought this error to my attention and I thought I'd better correct it for
anyone else playing with my observations from the other night. In the list of
altitudes I provided I substituted the calculated Hc for my observed Hs for the
second Moon sight. Here, to correct my mistake and to provide the opportunity
for anyone that wishes to correct my altitudes based on calculated Hc's I'll
provide the observations again only more clearly.

From a position of approximately 27-42.2N, 82-44.2W and a height of eye of about
10 feet. I took the following sights.

Body    Time        Hs (corrected for IE)   Calculated Hc   Intercept
Venus   00:11:41    7-50.6          7-40.7      0
Moon    00:12:48    44-52.6         45-41.3     to 1.2
Venus   00:13:27    7-25            7-17.3      away 2.5
Moon    00:14:02    44-36           45-25.6     to .5

Then the lunar distances, then these altitudes:

Body    Time        Hs (corrected for IE)   Calculated Hc   Intercept
Venus   00:16:36    6-43            6-35.5      away 3.4
Moon    00:17:31    43-51.6         44-41.1     to 1
Venus   00:18:09    6-24            6-15        away 2.2
Moon    00:19:09    43-30           44-20.3     to .5

Author: Stark4677---.com
Date:       3/21/02 11:11 AM

Chuck,

I started to work your lunar and noticed something odd. The first two
altitudes of the moon are increasing, and a few minutes later, the second two
are decreasing. Calculated the apparent altitude of the moon's lower limb and
decided the second of the first two altitudes should be 44? 25.'6, not 45?
25.'6.

Check it out and, if you discover a mistake was made, you can post it
yourself.

Wish I had a dollar for every time I put down one number when I meant
another, or just plain read a number wrong.

I'll go ahead and work the observation and let you know what I get.

Bruce

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