Enter at least the limits in Right Ascension, those in Declination are optional. The default selection is based on the criterion l < 10°. You can refine the selection limits afterwards. If the scale is large enough, you can also choose to display the cluster names or not. The default is not selected.
The map is active and you can click on any cluster to obtain more information and links to other maps. The circle sizes are function of the cluster diameter. The colors code roughly the cluster ages.
It is not yet possible to make plots across 24h, for example, from 23h to 1h.
Last update: 26 January 1998