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Celestaire offerings
From: Rick Emerson
Date: 1998 Oct 14, 7:20 AM
From: Rick Emerson
Date: 1998 Oct 14, 7:20 AM
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 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= =-= TO UNSUBSCRIBE, send this message to majordomo@roninhouse.com: =-= =-= navigation =-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
