AAVSO Spectroscopy Database (AVSpec)

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

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!

August 8, 2023

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-2022-2023
 - Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01

May 1, 2023

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/hm-lup-campaign-2023
- Spectroscopy:  https://www.aavso.org/hm-lup-campaign-2023-01
- Young Stellar Objects (YSO): https://www.aavso.org/hm-lup-campaign-2023-02

Note: Text and forum links edited per request of Dr. Howell.  -  Elizabeth O. Waagen, April 21, 2023

April 13, 2023

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
 - Campaigns and Observing Reports: https://www.aavso.org/xx-oph-v5569-sgr-campaign
 - Eclipsing Binaries: https://www.aavso.org/xx-oph-v5569-sgr-campaign-01

Note: Please continue observations until further notice.  -  Elizabeth O. Waagen, December 5, 2023

December 16, 2022

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/rw-cep-dimming
- Long Period Variables: https://www.aavso.org/rw-cep-dimming-01

Note: Please continue observations until the end of the observing season.  -  Elizabeth O. Waagen, February 6, 2023

Please continue to observe the target through January 2023.  -  Elizabeth O. Waagen, January 3, 2023

November 14, 2022

September 30, 2022

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Time Sensitive Alerts: https://www.aavso.org/atlas22beux-11th-mag-nova-mensa
- Novae: https://www.aavso.org/atlas22beux-11th-mag-nova-mensa-01

PLEASE GO TO ALERT NOTICE 820 FOR CURRENT OBSERVING REQUEST.  -  Elizabeth O. Waagen, April 19, 20232

Note: The Chandra observations of September 26 were carried out successfully. Additional Chandra observations are scheduled for October 3 and 4. Please continue to monitor R Aqr through the end of the observing season and through 2023.  -  Elizabeth O. Waagen, 3 October 2022

September 21, 2022