From 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 Mon Sep 17 00:00:00 2001
From: Joe Hunkeler <jhunkeler@gmail.com>
Date: Tue, 11 Aug 2015 16:51:37 -0400
Subject: Repatch (from linux) of OSX IRAF

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 math/slalib/doc/hfk5z.hlp | 60 +++++++++++++++++++++++++++++++++++++++++++++++
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 create mode 100644 math/slalib/doc/hfk5z.hlp

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diff --git a/math/slalib/doc/hfk5z.hlp b/math/slalib/doc/hfk5z.hlp
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+.help hfk5z Jun99 "Slalib Package"
+.nf
+
+      SUBROUTINE slHF5Z (RH,DH,EPOCH,R5,D5,DR5,DD5)
+
+     - - - - - -
+      H F 5 Z
+     - - - - - -
+
+  Transform a Hipparcos star position into FK5 J2000, assuming
+  zero Hipparcos proper motion.
+
+  (double precision)
+
+  Given:
+     RH        d      Hipparcos RA (radians)
+     DH        d      Hipparcos Dec (radians)
+     EPOCH     d      Julian epoch (TDB)
+
+  Returned (all FK5, equinox J2000, epoch EPOCH):
+     R5        d      RA (radians)
+     D5        d      Dec (radians)
+
+  Called:  slDS2C, slDAVM, slDMXV, slDAVM, slDMXM,
+           slDIMV, slDVXV, slDC6S
+
+  Notes:
+
+  1)  The proper motion in RA is dRA/dt rather than cos(Dec)*dRA/dt.
+
+  2)  The FK5 to Hipparcos transformation consists of a pure
+      rotation and spin;  zonal errors in the FK5 catalogue are
+      not taken into account.
+
+  3)  The published orientation and spin components are interpreted
+      as "axial vectors".  An axial vector points at the pole of the
+      rotation and its length is the amount of rotation in radians.
+
+  4)  It was the intention that Hipparcos should be a close
+      approximation to an inertial frame, so that distant objects
+      have zero proper motion;  such objects have (in general)
+      non-zero proper motion in FK5, and this routine returns those
+      fictitious proper motions.
+
+  5)  The position returned by this routine is in the FK5 J2000
+      reference frame but at Julian epoch EPOCH.
+
+  6)  See also slFK5H, slHFK5, slF5HZ.
+
+  Reference:
+
+     M.Feissel & F.Mignard, Astron. Astrophys. 331, L33-L36 (1998).
+
+  P.T.Wallace   Starlink   7 October 1998
+
+  Copyright (C) 1998 Rutherford Appleton Laboratory
+  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
+
+.fi
+.endhelp
-- 
cgit 

