[pycalcal] push by enrico.spinielli - improved INSTALL and some astronomical descriptions. on 2010-02-08 10:10 GMT
pyca...@googlecode.com
Author: Enrico Spinielli <enrico.s...@gmail.com>
Date: Mon Feb 8 02:10:30 2010
Log: improved INSTALL and some astronomical descriptions.
http://code.google.com/p/pycalcal/source/detail?r=4eef913204
Modified:
/INSTALL
/pycalcal.nw
=======================================
--- /INSTALL Sat Oct 24 10:58:23 2009
+++ /INSTALL Mon Feb 8 02:10:30 2010
@@ -11,6 +11,21 @@
* noweb (http://www.cs.tufts.edu/~nr/noweb/)
* make
* sh (unix shell)
+ * LaTeX distribution, i.e. TeXLive2010 (with asymptote!)
Unit tests' line coverage metrics are gathered by 'coverage' from
http://nedbatchelder.com/code/coverage/
+
+Here are the steps for buiding:
+1. execute makemake.sh in order to create the Makefile
+ $ ./makemake.sh
+
+2. generate the code:
+ $ make pycalca.py
+
+3. generate the doc:
+ $ make figures
+ $ make pycalcal.pdf
+
+4. run the tests:
+ $ make test
=======================================
--- /pycalcal.nw Sun Feb 7 08:26:03 2010
+++ /pycalcal.nw Mon Feb 8 02:10:30 2010
@@ -3183,6 +3183,27 @@
The location of an object in the sky is determined by celestial
coordinates, analogous to the latitude and longotude for the location
of a position on Earth.
+
+The ''place of an object`` concept is quite complicated. In fact in
astronomy we
+speak of \emph{mean}, \emph{apparent} and \emph{true} position.
+
+\begin{description}
+\item[apparent place] is the position at which the object would actually be
+ seen from the center of the Earth --- if the Earth were transparent,
+ nonrefracting, and massless --- referred to the true equator and equinox.
+ It is the position on the celestial sphere as seen from the center of the
+ moving Earth and referred to the instantaneus equator, ecliptic and
equinox.
+
+\item[mean place] represents the direction of the
+ object (a star or other celestial object outside the solar system) as it
would
+ hypothetically be observed from the solar system barycenter
+ at the specified date, with respect to a fixed coordinate system if the
masses
+ of the Sun and other solar system bodies were negligible.
+ It is the apparent position on the celestial sphere as it would be seen
from
+ the barycenter of the solar system and referred to the ecliptic and mean
+ equinox of the date (or to the mean equator and mean equinox of the
date.)
+
+\end{description}
\subsection{$Alt-az$ Coordinate systems}
\label{sec:alt-az}
The alt-az is a topocentric (i.e. as seen from the observer's
@@ -8741,7 +8762,7 @@
pycalcal.idx *UnitTest.py *UnitTest_result.txt \
html/ calendrica/ pycalcal*.gz figure.mpx \
$$(ls | grep "figure.[0-9][0-9]*") figure-*.pdf fig_*.pdf \
- *.mps *mpx
+ *.mps *mpx fig_*.0
superclean: clean
for f in $$(hg status | grep -e '^?' | sed -e 's/^? //g'); \