Data Discovery Tool

Retrieve astronomical data about a given position or object in the sky.

(version 1.7)

Find datasets from thousands of astronomical collections known to the VO and over wide areas of the sky. This includes today’s the most important collections from archives around the world such as:

Chandra X-ray Observatory
Hubble Space Telescope (HST) and other collections from the Multimission Archive at STScI (MAST)
Multi-band collections from NASA HEASARC
Sloan Digital Sky Survey (SDSS)
Spitzer Space Telescope
Two Micron All Sky Survey (2MASS)
CDS Vizier Catalogs
plus many more …

Search by object name or position
Full searching of all known image and catalog collections
Filter data based on data type, publisher, waveband
Download images or selected catalog records
Help & Documentation

User Guide
Video Tutorial: MP4 or Youtube
More tutorial videos provided by MAST/STSci:
Search the Virtual Observatory
Search MAST
Crossmatch Search
Importing and Exporting Files
Visualization with AstroView
Charting and Selection Interactivity
Forum Topics about the Data Discovery Tool
Contact Us for Feedback or more Help