Alert Notice 846: AB Aur HST observations on January 17-18

Note: The HST observations of AB Aur scheduled for 2024 January 17-18 have been cancelled because HST has gone into safe mode. Rescheduling information will be given here and in the forum threads below when available. In the meantime, please continue to observe AB Aur according to the cadence given below.  -  Elizabeth O. Waagen, January 17, 2024

January 15, 2024

Alert Notice 842: AB Aur monitoring requested for HST observations

November 15, 2023
Notes: In the original version of this Alert Notice, the Rc magnitude of the CHECK star was in error. The correct Rc magnitude for the CHECK star is 11.382.  -  Elizabeth O. Waagen, December 12, 2023
A webinar on AB Aur and this campaign took place on November 19, 2023. See below under "What to Expect" for details.

Alert Notice 841: VY Scl coverage needed now for HST ToO observations

Notes: HST will not be able to observe VY Scl at this time, so the observations have been canceled. However, the data being obtained by you continue to be extremely valuable to the astronomers, and continuing coverage is requested until after VY Scl has returned to its bright state. Thank you!  -  Elizabeth O. Waagen, January 31, 2024

Alert Notice 839: BF Eri monitoring requested in support of HST observations this week

Note: HST was not able to observe BF Eri in November. It may be rescheduled for 2024 - stay tuned to the forums below for updates. An Alert Notice will also be sent when/if BF Eri is scheduled again.  -  Elizabeth O. Waagen, December 5, 2023

November 4, 2023