American Association of Variable Star Observers (AAVSO)
Fri, 10/13/2023 - 19:52

AAVSO Alert Notice 835 reports on the observing campaign underway on the quiescent black hole X-ray binary V404 Cyg. Please see the notice for details and observing instructions.

There are threads for this campaign under the following AAVSO forums:

 - Campaigns and Observing Reports:
 - High Energy Network:

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ