Nu1 (ν1 CrB) is the orange colored star in the center of the image. Nu2 (ν2 CrB) is the orange star lower and a bit to the left of ν1. When considered together, these stars are both called Nu Coronae Borealis.
ν1 is a variable star with a spectral type of M2III. ν2 is a high proper motion star which means it's moving through space faster than most other stars. It's spectral type is K5III.