I often refer to the constellation Octans the Octant during ... One member of this stellar quartet - Sigma - provides the Southern Hemisphere's best Pole Star. The actual pole resides a bit ...

and you'll see the small but unmistakable crescent of Corona Borealis (it's not visible from the Southern Hemisphere). T CrB, or T Cor Bor, is in the constellation of Corona Borealis. Here's the ...