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information_for_astronomers:user_guide:pycatalog [2014/01/20 09:02]
akraus
information_for_astronomers:user_guide:pycatalog [2014/01/20 09:06] (current)
akraus
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 ====== Using source catalogs ====== ====== Using source catalogs ======
-With the new Obsinp observing software, source catalog files are stored in a proprietary file format, which cannot be edited using a text editor as it was possible with the (old) VAX source catalogs. However, there exists a script ''catalog.py'', which can be used to convert files having the old VAX format to the new Obsinp format. Using+With the new Obsinp observing software, source catalog files are stored in the SDB (structured data base) format. This format is somewhat less easy¬†
 +to understand as the (old) VAX source catalogs. However, there exists a script ''catalog.py'', which can be used to convert files having the old VAX format to the new Obsinp format. Using
  
 <code>catalog.py sources.cat</code> <code>catalog.py sources.cat</code>
  
 on the **be4** computer will create a file ''sources.sdb''. If you place it into ''your_directory_on_be4/Catalogues'' it will be found automatically by Obsinp (if you choose the correct startup directory). on the **be4** computer will create a file ''sources.sdb''. If you place it into ''your_directory_on_be4/Catalogues'' it will be found automatically by Obsinp (if you choose the correct startup directory).
 +
 +For the preparation of your observations we recommend to prepare a catalog in the VAX format and convert it into the new format afterwards.
  
  
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 The TLEs need to be updated frequently, since the orbits of satellites are suspect to quick changes. In the sub-directory ''satellite_tle'' there is a script ''update_tle.sh'' which can be used to download some predefined satellite TLEs. The TLEs need to be updated frequently, since the orbits of satellites are suspect to quick changes. In the sub-directory ''satellite_tle'' there is a script ''update_tle.sh'' which can be used to download some predefined satellite TLEs.
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information_for_astronomers/user_guide/pycatalog.txt · Last modified: 2014/01/20 09:06 by akraus     Back to top