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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
| commit | d54fe7c1f704a63824c5bfa0ece65245572e9b27 (patch) | |
| tree | afc52015ffc2c74e0266653eecef1c8ef8ba5d91 /src/slalib/sun67.htx/node178.html | |
| download | calfuse-d54fe7c1f704a63824c5bfa0ece65245572e9b27.tar.gz | |
Initial commit
Diffstat (limited to 'src/slalib/sun67.htx/node178.html')
| -rw-r--r-- | src/slalib/sun67.htx/node178.html | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/slalib/sun67.htx/node178.html b/src/slalib/sun67.htx/node178.html new file mode 100644 index 0000000..3d7a547 --- /dev/null +++ b/src/slalib/sun67.htx/node178.html @@ -0,0 +1,111 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<!--Converted with LaTeX2HTML 97.1 (release) (July 13th, 1997) + by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds +* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan +* with significant contributions from: + Jens Lippman, Marek Rouchal, Martin Wilck and others --> +<HTML> +<HEAD> +<TITLE>SLA_SUBET - Remove E-terms</TITLE> +<META NAME="description" CONTENT="SLA_SUBET - Remove E-terms"> +<META NAME="keywords" CONTENT="sun67"> +<META NAME="resource-type" CONTENT="document"> +<META NAME="distribution" CONTENT="global"> +<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso_8859_1"> +<LINK REL="STYLESHEET" HREF="sun67.css"> +<LINK REL="next" HREF="node179.html"> +<LINK REL="previous" HREF="node177.html"> +<LINK REL="up" HREF="node13.html"> +<LINK REL="next" HREF="node179.html"> +</HEAD> +<BODY > +<BR> <HR> +<A NAME="tex2html2206" HREF="node179.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2204" HREF="node13.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2198" HREF="node177.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2207" HREF="node179.html">SLA_SUPGAL - Supergalactic to Galactic</A> +<BR> +<B>Up:</B> <A NAME="tex2html2205" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2199" HREF="node177.html">SLA_SMAT - Solve Simultaneous Equations</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<H2><A NAME="SECTION0004165000000000000000">SLA_SUBET - Remove E-terms</A> +<A NAME="xref_SLA_SUBET"> </A><A NAME="SLA_SUBET"> </A> +</H2> + <DL> +<DT><STRONG>ACTION:</STRONG> +<DD>Remove the E-terms (elliptic component of annual aberration) +from a pre IAU 1976 catalogue <IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img3.gif" + ALT="$[\,\alpha,\delta\,]$"> to give a mean place. +<P> <DT><STRONG>CALL:</STRONG> +<DD><TT>CALL sla_SUBET (RC, DC, EQ, RM, DM)</TT> +<P> </DL> +<P> <DL> +<DT><STRONG>GIVEN:</STRONG> +<DD> +<BR> +<TABLE CELLPADDING=3> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>RC,DC</EM></TD> +<TH ALIGN="LEFT"><B>D</B></TH> +<TD ALIGN="LEFT" NOWRAP><IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img3.gif" + ALT="$[\,\alpha,\delta\,]$"> with E-terms included (radians)</TD> +</TR> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>EQ</EM></TD> +<TD ALIGN="LEFT"><B>D</B></TD> +<TD ALIGN="LEFT" NOWRAP>Besselian epoch of mean equator and equinox</TD> +</TR> +</TABLE></DL> +<P> <DL> +<DT><STRONG>RETURNED:</STRONG> +<DD> +<BR> +<TABLE CELLPADDING=3> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>RM,DM</EM></TD> +<TH ALIGN="LEFT"><B>D</B></TH> +<TD ALIGN="LEFT" NOWRAP><IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img3.gif" + ALT="$[\,\alpha,\delta\,]$"> without E-terms (radians)</TD> +</TR> +</TABLE></DL> +<P> <DL> +<DT><STRONG>NOTE:</STRONG> +<DD>Most star positions from pre-1984 optical catalogues (or +obtained by astrometry with respect to such stars) have the + E-terms built-in. This routine converts such a position to a + formal mean place (allowing, for example, comparison with a + pulsar timing position). + </DL> +<P> <DL> +<DT><STRONG>REFERENCE:</STRONG> +<DD><I>Explanatory Supplement to the Astronomical Ephemeris</I>, +section 2D, page 48. + </DL> +<BR> <HR> +<A NAME="tex2html2206" HREF="node179.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2204" HREF="node13.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2198" HREF="node177.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2207" HREF="node179.html">SLA_SUPGAL - Supergalactic to Galactic</A> +<BR> +<B>Up:</B> <A NAME="tex2html2205" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2199" HREF="node177.html">SLA_SMAT - Solve Simultaneous Equations</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<ADDRESS> +<I>SLALIB --- Positional Astronomy Library<BR>Starlink User Note 67<BR>P. T. Wallace<BR>12 October 1999<BR>E-mail:ptw@star.rl.ac.uk</I> +</ADDRESS> +</BODY> +</HTML> |