	Star data
	BSC5 CSN3 Tycho2

BSC5

The Bright Star Catalog, 5th Revised Edition, Preliminary Version, 1991 can be found at http://adc.gsfc.nasa.gov/cgi-bin/adc/cat.pl?/catalogs/5/5050 .
BSC5 is a basic catalog, containing 9096 stars brighter than magnitude 6.5, and 14 non-stellar objects.

Integration to JEphem

BSC5 holds quite rich information (the file notes.dat, associated to the main file (catalog.dat) contains many remarks). For a first version, I just kept basic informations.

Wrote a class to extract some data of the catalog : BuildBSC5.java (see source code or javadoc).
The resulting file is in directory JEphem/data/astro/sky/BSC5.
The command used to generate it is : java -classpath . BuildBSC5 build TEXT BHSRDMTP RAD BSC5.txt
"BHSRDMTP" indicates which fields were retrieved from the original file :

B stands for BSC number
H stands for HD number
S stands for SAO number
R stands for r.a.
D stands for dec.
M stands for visual magnitude
T stands for spectral type
P stands for parallax

Wrote a class to access to BSC5 data : jephem.astro.sky.BSC5.java

All declinations and right ascensions were stored in radians. It will perharps be useful to rebuild the data files in order to store data already precessed to J2000.

CSN3

The Preliminary Version of the Third Catalogue of Nearby Stars can be retrieved from ftp://adc.gsfc.nasa.gov/pub/adc/archives/catalogs/5/5070A/.
It contains every star with trigonometric parallax greater than or equal to 0.0390 arcsec.
This catalog would be useful if a 3D modelization is included to JEphem, but for the moment, I didn't use it.

Tycho2

Ze catalog - To do.

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