diff options
Diffstat (limited to 'doc/kstars/horizon.docbook')
| -rw-r--r-- | doc/kstars/horizon.docbook | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/kstars/horizon.docbook b/doc/kstars/horizon.docbook new file mode 100644 index 00000000..23f61610 --- /dev/null +++ b/doc/kstars/horizon.docbook @@ -0,0 +1,25 @@ +<sect1 id="ai-horizon"> +<sect1info> +<author> +<firstname>Jason</firstname> +<surname>Harris</surname> +</author> +</sect1info> +<title>The Horizon</title> +<indexterm><primary>Horizon</primary> +<seealso>Horizontal Coordinates</seealso> +</indexterm> +<para> +The <firstterm>Horizon</firstterm> is the line that separates Earth from Sky. +More precisely, it is the line that divides all of the directions you can +possibly look into two categories: those which intersect the Earth, +and those which do not. At many locations, the Horizon is +obscured by trees, buildings, mountains, &etc;. However, if you are on +a ship at sea, the Horizon is strikingly apparent. +</para><para> +The horizon is the <firstterm>Fundamental Plane</firstterm> of the <link +linkend="horizontal">Horizontal Coordinate System</link>. In other +words, it is the locus of points which have an <firstterm>Altitude</firstterm> +of zero degrees. +</para> +</sect1> |