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Subject: [Nml] Celestaire offerings
From: Rick Emerson (rick@XXX.XXX)
Date: Wed Oct 14 1998 - 09:19:41 EDT
A couple new entries in Celestaire's catalog caught my attention.
First, Sven Lundin's pocket sextant is being offered for $65. This
isn't one of those Indian-made Stanley reproductions but a set of
reflecting bits of glass which use a 35 mm film can as a carrying
case(!). See the description for the details.
Three book titles also stood out during my browsing. Recalling the
discussion here about lunars, take a look at "Tables for Clearing the
Lunar Distance" by Bruce Stark (soft cover, spiral bound, 301 pp.,
$37). "Compact Sight Reduction Table" by Allan E. Bayless (soft
cover, 32 pp., $6) is a compact version of the HO 211 tables.
Compression is achieved by omitting every other entry in the tables.
The third title prompts a question about "how's it done". "Celestial
Navigation with the S-table" by Mike Pepperday (soft cover, 30 pp.,
$9.95) has "...the only tables to yield the same results as a
navigation computer; that is they give intercepts directly from a DR
position." Can someone explain why most paper reduction processes
work from an assumed position which isn't the DR position?
Celestair is at 800-727-9785 or 316-686-9785 or
http://www.celestair.com.
Disclaimer: I have no connection with Celestaire save as a satisfied
customer.
Rick
S/V One With The Wind, Baba 35
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