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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+.help mapqkz Jun99 "Slalib Package"
+.nf
+
+      SUBROUTINE slMAPZ (RM, DM, AMPRMS, RA, DA)
+
+     - - - - - - -
+      M A P Z
+     - - - - - - -
+
+  Quick mean to apparent place:  transform a star RA,Dec from
+  mean place to geocentric apparent place, given the
+  star-independent parameters, and assuming zero parallax
+  and proper motion.
+
+  Use of this routine is appropriate when efficiency is important
+  and where many star positions, all with parallax and proper
+  motion either zero or already allowed for, and all referred to
+  the same equator and equinox, are to be transformed for one
+  epoch.  The star-independent parameters can be obtained by
+  calling the slMAPA routine.
+
+  The corresponding routine for the case of non-zero parallax
+  and proper motion is slMAPQ.
+
+  The reference frames and timescales used are post IAU 1976.
+
+  Given:
+     RM,DM    d      mean RA,Dec (rad)
+     AMPRMS   d(21)  star-independent mean-to-apparent parameters:
+
+       (1-4)    not used
+       (5-7)    heliocentric direction of the Earth (unit vector)
+       (8)      (grav rad Sun)*2/(Sun-Earth distance)
+       (9-11)   ABV: barycentric Earth velocity in units of c
+       (12)     sqrt(1-v**2) where v=modulus(ABV)
+       (13-21)  precession/nutation (3,3) matrix
+
+  Returned:
+     RA,DA    d      apparent RA,Dec (rad)
+
+  References:
+     1984 Astronomical Almanac, pp B39-B41.
+     (also Lederle & Schwan, Astron. Astrophys. 134,
+      1-6, 1984)
+
+  Notes:
+
+  1)  The vectors AMPRMS(2-4) and AMPRMS(5-7) are referred to the
+      mean equinox and equator of epoch EQ.
+
+  2)  Strictly speaking, the routine is not valid for solar-system
+      sources, though the error will usually be extremely small.
+      However, to prevent gross errors in the case where the
+      position of the Sun is specified, the gravitational
+      deflection term is restrained within about 920 arcsec of the
+      centre of the Sun's disc.  The term has a maximum value of
+      about 1.85 arcsec at this radius, and decreases to zero as
+      the centre of the disc is approached.
+
+  Called:  slDS2C, slDVDV, slDMXV, slDC2S, slDA2P
+
+  P.T.Wallace   Starlink   18 March 1999
+
+  Copyright (C) 1999 Rutherford Appleton Laboratory
+  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
+
+.fi
+.endhelp
-- 
cgit 

