NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Jupiters moons and time/longitude
From: Stan K
Date: 2014 Jun 7, 21:58 -0400
From: Stan K
Date: 2014 Jun 7, 21:58 -0400
Francis,
There are no cheap 4 inch refractors. Are you sure it wasn't a 2.4 inch?
Stan
There are no cheap 4 inch refractors. Are you sure it wasn't a 2.4 inch?
Stan
-----Original Message-----
From: Francis Upchurch <NoReply_Upchurch@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Sat, Jun 7, 2014 9:17 pm
Subject: [NavList] Jupiters moons and time/longitude
From: Francis Upchurch <NoReply_Upchurch@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Sat, Jun 7, 2014 9:17 pm
Subject: [NavList] Jupiters moons and time/longitude
Just got a wonderful 5 inch Newtonian reflector as a retirement present and plan lots of star gazing, including re-set my mechanical watch (grandads circ 1940) via Jupiter moons a la Cook et al Endevour. Tried it a few years ago with a cheap 4 inch refractor ,but mostly minutes (time ) out). Anybody had any success and /or advice? I found lunars more accurate so far, but hope this better telescope may improve things? Obviously land based method, unless anyone has ideas re gyro stabalized mount for telescope? The thought had occured, bit like the various crazy chairs tested by the longitude board! Do you think the time may be ripe for another go at this?
Francis
