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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Need help writing a slope-fit excel sheet
From: Bill B
Date: 2014 Jan 25, 20:08 -0500
From: Bill B
Date: 2014 Jan 25, 20:08 -0500
On 1/24/2014 8:03 PM, Greg Licfi wrote: > P.S. > Typically how many sights on average should one take, and over what time > span? Greg The Burch method gives you a straight line using anything near the start or end points as input. Like an LOP, it is a small section non-linear curve. Therefore it can be treated as a straight line if the time span is short enough. Time of day, and declination and rate of change are factors. As a rule of thumb I would limit it to 5-6 minutes time. Hopefully you can take and record 5-6 observations in the time period, the more *good* observations the better. That's my 2 cents worth. Bill B
