Discovery-tree NPM

Sky Data Collections Discovery Tree

The Sky Data Collections Discovery Tree (abbreviated as discovery tree in next sections) is a new embeddable web portal component. It allows a fast and easy retrival of astronomical catalogs and image sky surveys. This component follows what has been done in Aladin desktop, allowing the user to search for specific catalogs/sky surveys by browsing a tree. The component is currently developped with Aladin-lite but aims at becoming embeddable in other web portals (i.e. firefly) in the future.

Where can I test it ?

The discovery tree can be tested at this link

Features

Currently, the discovery tree comprises the following features:

A discrete icon for opening/closing the discovery tree.
A hierarchical browsing tree reducing the amount of catalogs/sky surveys being printed at once.

Possibility to go back to the parent directories by clicking on the path

A text box for seeking datasets by name, bibcode. User can search for multiples names by separing them by spaces.
The display of fundamental informations such as a description of the catalog/HiPS sky surveys, a preview image of the observations density/survey depending on whether it is a catalog or a image sky survey. The user can choose to plot a sky survey/catalog on the web portal view along with its coverage map, see its metadata directly on the CDS MOCServer and inspect its bibcode on ADS.

A description popup appears when the user moves the mouse on the name of the dataset

The possibility to track which catalogs/sky surveys have observations in the current viewport: catalogs printed in green contain observations in the viewport whereas those printed in red do not contain any observations in the viewport.
A powerful filter allowing to filter the amount of catalogs/sky surveys returned by the CDS MOCServer. It is possible to filter the datasets by bandwidth, date of publishing, electromagnetic magnitudes in eV, Hz or m, type of datasets (i.e. images or catalogs), mission (AKARI, Chandra, ...) and astronomy.