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Subject: SV: [Nml] Celestaire offerings
From: Einar Kjellkvist (einark@XXX.XXX)
Date: Wed Oct 14 1998 - 18:41:57 EDT
For more information about Sven Lundin's Bris-Sextant visit
http://home4.swipnet.se/~w-48096/svenindex.html
Einar Kjellkvist, SM5EK
-----Ursprungligt meddelande-----
Från: Rick Emerson <rick@XXX.XXX>
Till: navigation@XXX.XXX>
Datum: den 14 oktober 1998 19:18
Ämne: [Nml] Celestaire offerings
>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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