Alert Notice 725: Campaign on Northern T Tau Stars
Note: V510 Tau, one of the stars in this campaign, will be re-observed by HST on 2021 February 12-13 UT. Please continue your observations (highest priority are V and B, then Rc and U), obtaining a few observations each night from now through February 15. - Elizabeth O. Waagen, 1 February 2021
November 12, 2020