Next message: Frank Reed: "Re: Lunars question for Frank"
Bill wrote:
"I suspect side error introduced by adjusting for IE would not account a 5'
error. The problem being I have no idea how to quantify side or
index-mirror perpendicularity errors. My texts explain how to adjust those
errors out, and check for side error with a star or horizon, but little
more."
The mathematical details are discussed in Chauvenet's "Manual of Spherical
and Practical Astronomy". This important two-volume treatise is now available
online at
http://www.hti.umich.edu/m/moa/ (many other important titles here, too). If
you don't like the math yourself, I'm sure one of the mathier list members
would be happy to quantify the errors that result from lack of mirror
perpendicularity etc.
-FER
42.0N 87.7W, or 41.4N 72.1W.
www.HistoricalAtlas.com/lunars
