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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). | ||
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+ | 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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