NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Robin Stuart
Date: 2022 Feb 19, 07:36 -0800
Dale,
The topic of occultaions was discussed on Navlist in a thread starting here https://NavList.net/m2.aspx/Longitude-Lunar-Occultation-Stuart-jan-2019-g43848 . Some of the responses list websites where information can be obtained. I produced a spreadsheet that computes local circumstances and longitude from occultation observations. It was updated it to use quadratic Besselian elements and I have used it successfully on a number of occasions. Here it is again with data for 2022. The location has been set to Mystic Seaport but it can be easily changed to your particular location on the Control sheet.
The reference section of the preprint at https://NavList.net/m2.aspx/Will-anyone-ever-find-Shackletons-lost-ship-Stuart-feb-2022-g52047 has links to papers we have published in Records of the Canterbury Museum that contain more details about the navigation of the James Caird and the method Worsley used to reduce his occultations than you'd ever want to know,
Robin Stuart
