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diff --git a/src/slalib/sun67.htx/node197.html b/src/slalib/sun67.htx/node197.html new file mode 100644 index 0000000..ae8cd55 --- /dev/null +++ b/src/slalib/sun67.htx/node197.html @@ -0,0 +1,171 @@ +<!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>EXPLANATION AND EXAMPLES</TITLE> +<META NAME="description" CONTENT="EXPLANATION AND EXAMPLES"> +<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="node228.html"> +<LINK REL="previous" HREF="node13.html"> +<LINK REL="up" HREF="sun67.html"> +<LINK REL="next" HREF="node198.html"> +</HEAD> +<BODY > +<BR> <HR> +<A NAME="tex2html2394" HREF="node198.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2392" HREF="sun67.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2386" HREF="node196.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="tex2html2395" HREF="node198.html">Spherical Trigonometry</A> +<BR> +<B>Up:</B> <A NAME="tex2html2393" HREF="sun67.html">SLALIB Positional Astronomy Library</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2387" HREF="node196.html">SLA_ZD - to Zenith Distance</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<H1><A NAME="SECTION00050000000000000000"> +EXPLANATION AND EXAMPLES</A> +</H1> +To guide the writer of positional-astronomy applications software, +this final chapter puts the SLALIB routines into the context of +astronomical phenomena and techniques, and presents a few +``cookbook'' examples +of the SLALIB calls in action. The astronomical content of the chapter +is not, of course, intended to be a substitute for specialist text-books on +positional astronomy, but may help bridge the gap between +such books and the SLALIB routines. For further reading, the following +cover a wide range of material and styles: +<UL> +<LI> <I>Explanatory Supplement to the Astronomical Almanac</I>, + ed. P.Kenneth Seidelmann (1992), University Science Books. +<LI> <I>Vectorial Astrometry</I>, C.A.Murray (1983), Adam Hilger. +<LI> <I>Spherical Astronomy</I>, Robin M.Green (1985), Cambridge + University Press. +<LI> <I>Spacecraft Attitude Determination and Control</I>, + ed. James R.Wertz (1986), Reidel. +<LI> <I>Practical Astronomy with your Calculator</I>, + Peter Duffett-Smith (1981), Cambridge University Press. +</UL> +Also of considerable value, though out of date in places, are: +<UL> +<LI> <I>Explanatory Supplement to the Astronomical Ephemeris + and the American Ephemeris and Nautical Almanac</I>, RGO/USNO (1974), + HMSO. +<LI> <I>Textbook on Spherical Astronomy</I>, W.M.Smart (1977), + Cambridge University Press. +</UL> +Only brief details of individual SLALIB routines are given here, and +readers will find it useful to refer to the subprogram specifications +elsewhere in this document. The source code for the SLALIB routines +(available in both Fortran and C) is also intended to be used as +documentation. +<P> +<BR><HR> +<!--Table of Child-Links--> +<A NAME="CHILD_LINKS"> </A> +<UL> +<LI><A NAME="tex2html2396" HREF="node198.html#SECTION00051000000000000000"> +Spherical Trigonometry</A> +<UL> +<LI><A NAME="tex2html2397" HREF="node199.html#SECTION00051100000000000000"> +Formatting angles</A> +</UL> +<LI><A NAME="tex2html2398" HREF="node200.html#SECTION00052000000000000000"> +Vectors and Matrices</A> +<UL> +<LI><A NAME="tex2html2399" HREF="node201.html#SECTION00052100000000000000"> +Using vectors</A> +</UL> +<LI><A NAME="tex2html2400" HREF="node202.html#SECTION00053000000000000000"> +Celestial Coordinate Systems</A> +<LI><A NAME="tex2html2401" HREF="node203.html#SECTION00054000000000000000"> +Precession and Nutation</A> +<UL> +<LI><A NAME="tex2html2402" HREF="node204.html#SECTION00054100000000000000"> +SLALIB support for precession and nutation</A> +</UL> +<LI><A NAME="tex2html2403" HREF="node205.html#SECTION00055000000000000000"> +Mean Places</A> +<LI><A NAME="tex2html2404" HREF="node206.html#SECTION00056000000000000000"> +Epoch</A> +<LI><A NAME="tex2html2405" HREF="node207.html#SECTION00057000000000000000"> +Proper Motion</A> +<LI><A NAME="tex2html2406" HREF="node208.html#SECTION00058000000000000000"> +Parallax and Radial Velocity</A> +<LI><A NAME="tex2html2407" HREF="node209.html#SECTION00059000000000000000"> +Aberration</A> +<LI><A NAME="tex2html2408" HREF="node210.html#SECTION000510000000000000000"> +Different Sorts of Mean Place</A> +<LI><A NAME="tex2html2409" HREF="node211.html#SECTION000511000000000000000"> +Mean Place Transformations</A> +<LI><A NAME="tex2html2410" HREF="node212.html#SECTION000512000000000000000"> +Mean Place to Apparent Place</A> +<LI><A NAME="tex2html2411" HREF="node213.html#SECTION000513000000000000000"> +Apparent Place to Observed Place</A> +<UL> +<LI><A NAME="tex2html2412" HREF="node214.html#SECTION000513100000000000000"> +Refraction</A> +<LI><A NAME="tex2html2413" HREF="node215.html#SECTION000513200000000000000"> +Efficiency considerations</A> +</UL> +<LI><A NAME="tex2html2414" HREF="node216.html#SECTION000514000000000000000"> +The Hipparcos Catalogue and the ICRS</A> +<LI><A NAME="tex2html2415" HREF="node217.html#SECTION000515000000000000000"> +Timescales</A> +<UL> +<LI><A NAME="tex2html2416" HREF="node218.html#SECTION000515100000000000000"> +Atomic Time: TAI</A> +<LI><A NAME="tex2html2417" HREF="node219.html#SECTION000515200000000000000"> +Universal Time: UTC, UT1</A> +<LI><A NAME="tex2html2418" HREF="node220.html#SECTION000515300000000000000"> +Sidereal Time: GMST, LAST</A> +<LI><A NAME="tex2html2419" HREF="node221.html#SECTION000515400000000000000"> +Dynamical Time: TT, TDB</A> +</UL> +<LI><A NAME="tex2html2420" HREF="node222.html#SECTION000516000000000000000"> +Calendars</A> +<LI><A NAME="tex2html2421" HREF="node223.html#SECTION000517000000000000000"> +Geocentric Coordinates</A> +<LI><A NAME="tex2html2422" HREF="node224.html#SECTION000518000000000000000"> +Ephemerides</A> +<LI><A NAME="tex2html2423" HREF="node225.html#SECTION000519000000000000000"> +Radial Velocity and Light-Time Corrections</A> +<LI><A NAME="tex2html2424" HREF="node226.html#SECTION000520000000000000000"> +Focal-Plane Astrometry</A> +<LI><A NAME="tex2html2425" HREF="node227.html#SECTION000521000000000000000"> +Numerical Methods</A> +</UL> +<!--End of Table of Child-Links--> +<BR> <HR> +<A NAME="tex2html2394" HREF="node198.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2392" HREF="sun67.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2386" HREF="node196.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="tex2html2395" HREF="node198.html">Spherical Trigonometry</A> +<BR> +<B>Up:</B> <A NAME="tex2html2393" HREF="sun67.html">SLALIB Positional Astronomy Library</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2387" HREF="node196.html">SLA_ZD - to Zenith Distance</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> |