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“SExtractor “ -The source extraction

This form gives access to the “SExtractor” tool (Bertin & Arnouts, 1996 -

http://terapix.iap.fr/) and to generate a source catalogue from the current image. This

form is described in details in section 6.4.

5.2.7 Aladin’s form characteristics

The “Aladin images” tab opens the access form for images based at CDS

(Strasbourg –France) especially for Aladin. You will find there, among

others, the DSS, 2MASS, DENIS, IRAS-IRIS, WENS images. On of the characteristics of

the Aladin image server is to be able to send monochrome, astronomically calibrated,

images in the JPEG format, if the pass band of your network is low, this is the most

convenient image server. Another characteristic is that when the list of the available

images is presented as a table, it is possible to sort the images by clicking on the

headlines of the table.

5.2.8Vizier’s form characteristics

telescopes. In order to simplify the VizieR use, Aladin has 3 forms:

 “All Vizier ’: a generic form to access almost any catalogue;

 “ Surveys ’: a form dedicated to large surveys;

 “Missions ’: a form dedicated to observations lists.

All Vizier – All the Vizier catalogues

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Eycos USER GUIDE Manual de usuario Pagina 41