User manual

Some servers need two steps to load the data: first you need to indicate the region on the

sky, then you select among the available images or catalogues, those of which you would

the columns;

 A click on an element displays information relative to this data, as well as some

specific query parameters;

 Each element is preceded by a check box that enables you to select the elements to

load. Some cases can be checked either manually or by clicking in the view in order to

select elements that explicitly contain the clicked location. The Reset button lets you

de-select all checks. The delete button deletes the list or the tree.

5.2.4History of queries

Menu: File => History …

Short key: Ctrl+H

All along the session, Aladin saves all the information coming from the different data

servers that were queried. To do so, a tree is created, in which ramifications represent

the different targets visited during the session with a “graft” of different intermediate

results. You can go through this data tree and even reuse it with the menu “File =>

History”.