Reading data from a UCAC star catalogue

Hello, I wonder if someone already tried to get data from UCAC3 catalogue from within Matlab and has may be some scripts he/she could share with me.

4 commentaires

Walter Roberson
Walter Roberson le 16 Oct 2011
Hmmm... I do find evidence that it has been done, but I do not seem to find code for it, except possibly as a minor part of some much more extensive packages.
Walter Roberson
Walter Roberson le 16 Oct 2011
I did find the description of the binary format, but the description of the interpretation of all the various binary value types was somewhat long... not something one would be enthusiastic about programming up without good reason.
Artik Crazy
Artik Crazy le 17 Oct 2011
Walter, thank you for looking this up for me.
I downloaded the whole UCAC3 catalogue from here:
ftp://cdsarc.u-strasbg.fr/pub/cats/i/315/UCAC3
There is also a "read me" file with a description of all the binary values. They offer a simple Fortran program too. But I need something more powerful.
I found this piece of software, called wcstools:
http://tdc-www.harvard.edu/software/wcstools/index.html
They offer a complete package of c-source files, but it is problematic to use with Matlab in Windows environment.
Walter Roberson
Walter Roberson le 17 Oct 2011
The main page for the wcstools indicates it supports UCAC2 but there are apparently large differences for UCAC3.

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