ROSAT query services
GAVO has implemented IVOA standard query services on various ROSAT archives.
In particular, we have implemented simple cone searches on catalogues derived from the ROSAT All Sky Survey RASS). The Bright and Faint Source Catalogues were loaded into a relational database and a simple query interface provides access to this database for performing a cone search. These catalogues are relatively small and could also be downloaded directly from the ROSAT archive at the Max-Planck-Institut für extraterrestrische Physik (MPE).
A new product GAVO offers is a cone-search on the photon event file, containing all the photons observed in the RASS. The same user interface offers query capabilities. The size of this catalogue, which contains about 100 million photons, puts more requirements on the tuning and indexing of this database. A description of the methodology we used can be found at HEALPix Indexing.
We have also implemented the Simple Image Access Protocol (follow IVOA SIA for the specification) on all the ROSAT images, both the fields derived form the all sky survey and all the pointed opbservations.
The services can be obtained via the button below:
NOTE: The ClassX service, providing a set of tools for the classification of ROSAT sources, is no longer available. However, its description page can still be obtained via the following link.