StackImages · Show Clusters

Show Clusters with Gaia Data

Look up a star cluster, see its stars as Gaia measured them, and draw its Hertzsprung–Russell diagram.

1. Choose a field

Fills in RA and Dec; pressing Enter also works.
h : m : s
d : m : s
degrees (18 arcminutes)

Loading Python and the star catalogs… The first visit downloads about 40 MB.

Or use a file from the ESA Gaia archive

If the live data source is unavailable, or you want ESA's own copy of Gaia DR3:

  1. Fill in the field above (object, FOV, maximum magnitude).
  2. Copy this query, open the ESA Gaia archive, choose Search → Advanced (ADQL), paste it and submit.
  3. Download the result as CSV, VOTable or FITS, and choose that file below.
Fill in the field above to see the query.

2. The stars

The stars in your field appear here after you click Show Stars.

3. HR diagram

Plots the stars from step 2. Choose Apparent or Absolute magnitude, then click HR Diagram.