NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Constructing A Logarithm Table
From: Hewitt Schlereth
Date: 2009 Jan 12, 11:16 -0400
From: Hewitt Schlereth
Date: 2009 Jan 12, 11:16 -0400
Hey, thanks guys. I'll check it out right away - and probably be back for coaching in s/s use. Hewitt On 1/12/09, FJoneswrote: > > IMHO the spreadsheet is one of the most powerful (and commonly available) > tools that a scientist, engineer, navigator, etc., has. Even the earliest > software met instant success with a very wide user base. I fondly recall using > the early software releases (Visicalc and Lotus 123, for example)! There was > simply nothing to compare spreadsheet techniques with and the possibilites > seemed endless. > > Frank J. > Rochester, NY > > ================================================== > > From: > To: > Subject: [NavList 7001] Re: Constructing A Logarithm Table > Date sent: Sun, 11 Jan 2009 19:27:44 -0800 > Priority: normal > Send reply to: NavList@fer3.com > > > > > > Hewitt, you wrote: > > "(In high school we use to call them 'slime' and 'co-slime')." > > > > LOL. I had the happy advantage of learning celestial navigation, and some of the associated trig, a year before studying the subject in school, so the "slimeys" were old friends to me. > > > > And: > > "Anyway, I've never had occasion to grapple with a spread-sheet." > > > > Oh, what a shame! They're great fun for this sort of thing. I write quite a lot of stand-alone software, but when I want to work out celestial navigation calculations, I almost always start with a spreadsheet. If you need a table of haversines for every tenth of a degree, you can assemble one in about... hmmm... I'll time myself... OK. Done. It took me five minutes and that included some time making a nice graph (I got distracted). Do you know if you have a spreadsheet program pre-installed on your computer? Are you on Windows? Mac? > > > > And you wrote: > > "Come to think of it, there's a nice little book that has the S/CoS > > formulas for direct solution of the undivided triangle for Hc and Z - > > backup is the NAO reduction table with a more lucid explanation. Also > > has a long-term almanac of Aries and Sun; pub. by Starpath School of > > Navigation." > > > > Yes, there are quite a few nice books out there that spell it all out. Some even have *your* name on the cover. :-) > > > > -FER > > > > > > > > > > > > > > > > > > > --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---