cataclysmic variable

Alert Notice 796: Monitoring requested for 12 dwarf novae in support of HST observations in 2022-2023

Notes: V479 And was successfully observed in December 2022.  -  Elizabeth O. Waagen, February 3, 2023

HST observations of ZTF18acxhphf were successfully carried out. V479 And has been rescheduled for December 2022. Please continue nightly snapshots of it and CH UMa, the other December target, as well as beginning coverage of ASASSN-18dg, the January 2023 target.  -  Elizabeth O. Waagen, December 6, 2022

Alert Notice 779: Recurrent nova U Sco in surprise eruption needs long time series for the next month

Note: Please observe U Sco throughout the 2023 observing season.  -  Elizabeth O. Waagen, February 6, 2023

Please continue observations of U Sco through the end of the 2022 observing season and pick up again after conjunction.  -  Elizabeth O. Waagen, September 2, 2022

June 7, 2022