NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg B
Date: 2014 Jan 27, 15:16 -0500
I may have precipitated this discussion
with my original use of ICE on my smart phone discussion, if so, please excuse. I am also using a smart phone app called "celestial" and according to its developer it uses: "USNO NOVAS C3.0 software for astrometry predictions. Solar object and navigational star information derived from the JPL DE405 Solar Ephemeris and the Hipparcos Catalog." I find all three (ICE, celestial, & USNO web page) agree 100% (Well it agrees to 0.1 min of arc might be a better way to put it) . I guess I trust ICE, and USNO products and am familiar and comfortable with USNO products kinda think of them as the 'gold standard'. What other app / software would you suggest?
Thanks,
~Greg
Sent from my HTC Inspire™ 4G on AT&T
From: "Frank Reed" <FrankReed@HistoricalAtlas.com>
To: <cfi@licfi.com>
Subject: [NavList] Re: DosBox Tips
Date: Mon, Jan 27, 2014 1:28 pm
Sean and Marcel, if you want to discuss emulators, there are FAR better places on the Internet for this. Marcel, you asked if anyone knew anything about the "Limbo PC Emulator". This is way, way down on the list of "related topics" for NavList members.. You'll do much better just by doing a standard Internet search on something like "Limbo PC emulator reviews". There are specialty groups devoted to this sort of extremely narrow, specialized topic.
But back to navigation software, I'm curious, Sean, what you're getting out of that old "ICE" software that you can't find in more modern software. If it's simply a familiar tool, and you don't want to change if you don't have to, that's reason enough! But are there functions or features that you don't find in modern tools? Also, isn't "delta-T" hard-coded in ICE, or is there an external data file that can be updated? Most older ephemeris/almanac software from more than 15 years ago suffers from incorrect delta-T values for current dates which leads, most noticeably, to progressively inaccurate Moon data.
-FER
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