Affiliation
American Association of Variable Star Observers (AAVSO)
Wed, 04/11/2018 - 22:45
AAVSO Alert Notice 630 announces the campaign by Dr. Greg Sivakoff on ASASSN-18ey = MAXI J1820+070 taking place tonight and tomorrow. Please see the notice for details and observing instructions, and for important information about the comp star to use for high-cadence time series.
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ