How the Sky Turns · 4 of 8
Cassiopeia: The Other Pointer
How do you find Polaris when the Big Dipper is too low to use?
When the Big Dipper is scraping the horizon, the W still finds Polaris — from the opposite side of the pole.
You’ll be able to find Polaris from Cassiopeia’s W when the Dipper is low.
Before this: Finding the North Star (6 min)
Where and which night
Working out when this is best placed from where you are…
Where
Kept for this guide only, until you change it here — your map settings, and every other guide, stay as they are.
Print, play outside or present
Scan with a phone's camera, or open
Sources
- HYG stellar database v4.2 — star positions, magnitudes and every separation quoted here
- Meeus, Astronomical Algorithms, 2nd ed. (1998), ch. 17 — great-circle geometry of the 33° hop
- Green et al., ApJ 887, 93 (2019) — 3D dust map placing the Perseus arm behind Cassiopeia
- Stephenson & Green, Historical Supernovae and their Remnants (OUP 2002) — Tycho's star of 1572
With a keyboard, focus the sky, aim it with the up and down arrow keys, and press Enter to drop the pin at the centre of the view; or press Show me.