Celestial archive

The Constellation Atlas

A flat interactive sky chart built around the constellations themselves. Choose an observer location and time, change the visual or data filters, then select a constellation to open its quick guide.

Observer Location · date · local time

Location

Date

Local time

Preparing the atlas for Phoenix, Arizona.

Filters & Data Appearance · overlays · constellation set

Loading star and constellation catalogues...

Drag in any direction · wheel or + / − to zoom · arrow keys pan · gold = selected · dim field = below horizon

Constellation guide

Select a Pattern

Click a constellation on the atlas

The selected constellation will be redrawn here as a clean line diagram.

Notable stars

Star names will appear after a constellation is selected.

Origin

Select a constellation to read a short historical summary of its origin.

Ancient voice

Select an ancient constellation to see a brief passage from classical sky literature. —