Alert Notice 707: Campaign Monitoring of the Helium double peak emission at 6678 Å in gamma Cas - Update to Alert Notice 694
June 17, 2020
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/campaign-monitoring-helium-double-peak-emission-6678-å
- Spectroscopy: https://www.aavso.org/campaign-monitoring-helium-double-peak-emission-6678