AAVSO International Database

Note: The Alert Notice text below has been revised from the original version issued April 18, 2024.  - Elizabeth O. Waagen, April 19, 2024

Observers are also reminded that it is essential to use the comparison and check stars indicated for the photometry target. If they are too far apart to fit into the same field of view as the target, use PEP-style observing, that is, alternate images of variable, comp, and check.

April 22, 2024                                            REVISED VERSION

April 1, 2024

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
 - Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2023-2024
 - Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2023-2024-01

March 14, 2024

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Time Sensitive Alerts: https://www.aavso.org/n-oph-2024-v-4370-oph-tcp-j-17395720-2627410
- Novae: https://www.aavso.org/node/90814

February 29, 2024

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns & Observation Reports: https://www.aavso.org/v-711-tau-observing-campaign

Please subscribe to this thread if you are observing this star so you can be updated by the astronomers and by HQ. Join in the discussion or ask questions there!

February 20, 2024

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns & Observation Reports: https://www.aavso.org/at-2000-ch-2024
- Cataclysmic Variables: https://www.aavso.org/at-2000-ch-2024-01

February 20, 2024

February 14, 2024

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns & Observing Reports: https://www.aavso.org/v-695-cyg-campaign-2024

Please subscribe to this thread if you are participating in the campaign so you may be updated by the astronomers and by HQ. Join in the discussion or ask questions there!

February 13, 2024

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
 - Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2023-2024
 - Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2023-2024-01