User manual

Tabs and forms can evolve with time and with new possibilities coming in the
astronomical community. Each time it starts, Aladin accesses a “yellow pages”
mechanism for the astronomical services in order to be up to date. It then adds or
modifies the respective tabs when changes are detected (see technical details on the
“cache” Erreur : source de la référence non trouvée).
5.2.1 Servers list
You will find there most of the world wide astronomical centres that distribute data on
the internet. Please note that some data are distributed by several institutes and it is
possible to access them via different servers (e.g. the DSS is distributed by 3 servers).
The servers list is described in details in the Aladin FAQ at the following address:
http://aladin.u-strasbg.fr/java/FAQ.html#data
5.2.2Specifying information
Most of forms need at least two mandatory informations in order to query the sky by
cone search: a target and a radius:
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