NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: minus index corr better than plus
From: Russell Sher
Date: 2000 Jul 25, 03:29 EDT
From: Russell Sher
Date: 2000 Jul 25, 03:29 EDT
How's this reasoning: An 'on the arc' (negative) correction is easier to read since it is read straight off the micrometer drum. An 'off the arc' error would be calculated by reading the drum and taking the 60' complement - for example: An error of 2' on the arc will be read as 2' when the instrument is being checked and the error has been noted. An error of 2' off the arc will be 58' ( equivalent to -2'). correct?? Russell -----Original Message----- From: Paul Hirose [mailto:71202.2014@XXX.XXX] Sent: Tuesday, July 25, 2000 9:16 AM To: NAVIGATION-L@XXX.XXX Subject: minus index corr better than plus I've never seen this discussed anywhere, but I can think of two reasons to prefer a negative sextant index correction rather than a positive IC. Can anyone figure out what those reasons might be?
