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author | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
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committer | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
commit | 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 (patch) | |
tree | 4464880c571602d54f6ae114729bf62a89518057 /math/slalib/doc/addet.hlp | |
download | iraf-osx-40e5a5811c6ffce9b0974e93cdd927cbcf60c157.tar.gz |
Repatch (from linux) of OSX IRAF
Diffstat (limited to 'math/slalib/doc/addet.hlp')
-rw-r--r-- | math/slalib/doc/addet.hlp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/math/slalib/doc/addet.hlp b/math/slalib/doc/addet.hlp new file mode 100644 index 00000000..464dd86a --- /dev/null +++ b/math/slalib/doc/addet.hlp @@ -0,0 +1,42 @@ +.help addet Jun99 "Slalib Package" +.nf + + SUBROUTINE slADET (RM, DM, EQ, RC, DC) + + - - - - - - + A D E T + - - - - - - + + Add the E-terms (elliptic component of annual aberration) + to a pre IAU 1976 mean place to conform to the old + catalogue convention (double precision) + + Given: + RM,DM dp RA,Dec (radians) without E-terms + EQ dp Besselian epoch of mean equator and equinox + + Returned: + RC,DC dp RA,Dec (radians) with E-terms included + + Note: + + Most star positions from pre-1984 optical catalogues (or + derived from astrometry using such stars) embody the + E-terms. If it is necessary to convert a formal mean + place (for example a pulsar timing position) to one + consistent with such a star catalogue, then the RA,Dec + should be adjusted using this routine. + + Reference: + Explanatory Supplement to the Astronomical Ephemeris, + section 2D, page 48. + + Called: slETRM, slDS2C, slDC2S, slDA2P, slDA1P + + 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 |