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The "Polaris semicircle" is an informal description of the arc that the star Polaris made due to the 11 hour exposure. Had it been a 6 hour exposure and he wan
by biot 16y ago
The "Polaris semicircle" is an informal description of the arc that the star Polaris made due to the 11 hour exposure. Had it been a 6 hour exposure and he wanted to point out a different star, he might have labeled it as the "HR2742 quarter circle".
- ericmsimons 16y agoAh, makes much more sense now! What I really meant then is that I've never seen any star in the "circular" shape shown in the pic