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    Re: 249 v 229 , Starpath, time tick
    From: Russell Sher
    Date: 1999 Mar 15, 02:24 EST

    Hi Brent - I'm not sure if anyone answered this question of yours (repeated
    below) about reducing sights with Ho249.
    Yes, it is used for reducing star sights after identifying and then shooting
    the appropriate body/ies. It can obviously only be used with the bodies
    listed and not for general reduction as in the case of the other volumes.
    The Hc is used as with the other volumes of Ho249 (or Ho229) to find the
    intercept. and Ho 249 gives Z directly (i.e. not just Zn) which requires no
    further correction as with Ho229 or other volumes of Ho 249.
    The reason why declinations are not mentioned are because they are already
    incorporated into this volume to realise the tables. The appropriate
    latitude and LHA has been calculated into the table as well to give the
    specific Hc and Z's for the particular bodies.
    Russell
    > -----Original Message-----
    > From:	Ferrantelli [SMTP:bsferrant{at}XXX.XXX]
    > Sent:	Sunday, March 14, 1999 8:04 PM
    > To:	navigation{at}XXX.XXX
    > Subject:	[Nml] 249 v 229 , Starpath, time tick
    >
    >   Second, is volume 1 of 249 only used for star identificaton, or can it
    > be used for reductions as well?  All we  tend to use it for in the Coast
    > Guard is as a star finder.  I reduced a star sight using only pub249 and
    > it
    > seemed to work, although I'm confused by the fact that it doen't include
    > any
    > declination values?
    >
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