Even tho it is not a classical "observation campaign", I'd like to draw attention to the 1st SNEWS fire drill : a campaign to practice observing the next galactic supernova.
Details can be found in this thread in the HEN section:
https://www.aavso.org/1st-galactic-sn-fire-drill-open-registration
Clear Skies
Heinz-Bernd Eggenstein