Astro ArenaIOAA
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Astro ArenaOBSERVING TASKS
IOAA
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IOAA · STAR-CHART PRACTICE

Extra stars

YOUR PRACTICE ON THIS DEVICE—

Customise the task

The range applies to added or missing stars. Lower magnitudes mean brighter stars. Changing these settings starts a new task immediately.

Chart display

Click or tap the chart. Keyboard: arrow keys move the crosshair, Enter marks a position. Shift + arrows for precise movement.