NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: HP 48GX Sight Reduction Programs
From: Glendon
Date: 2001 Oct 06, 5:49 PM
From: Glendon
Date: 2001 Oct 06, 5:49 PM
Hi Aubrey, It sounds like you are going down the same track as me. My copy of Meeus is in the post on the high seas. Meanwhile I intend trying to get some of the almanacs and sight reduction programs on www.hpcalc.org working...but have to build my HP to PC cable first! At first glance, these programs don't seem to have a friendly user interface, and its very difficult working through somebody elses RPL. I would certainly be interested in sharing experiences or collaborating to reduce work. What programming language are you using? I understand User RPL is basically compatible across the 48/49 range, provided care is taken not to use the special instructions peculiar to the later machines...ie User RPL is upwards compatible, but not downwards if the extended instruction set in later machines is used. Does your manual have any comments on compatibility?? Perhaps we should take this discussion off List?? Others who may be interested can follow. Lee Martin glendonJLM@bigpond.com ----- Original Message ----- From Aubrey O'Callaghan To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Sent: Friday, October 05, 2001 11:41 PM Subject: Re: HP 48GX Sight Reduction Programs Lee, I recently bought a HP49G and a copy of Meeus Astronomical Algorithms. I have been busy doing some initial programming. I have got almanac sorted out for sun positions and moon positions. I'm finding it quite a good way to learn my way around the HP programming language. Progress is quite slow as I have too many other things to do, but I'm happy to share my experiences with you. Aubrey.
