Alert Notice - Observing Campaign #870: Unveiling CI Hyi as a symbiotic system
AAVSO Alert Notice - Observing Campaign #870: Unveiling CI Hyi as a symbiotic system
September 10, 2024
symbiotic variable
Alert Notice 750: T CrB photometry and spectroscopy requested for HST and XMM-Newton observations (backup copy)
Note: Ongoing observations of T CrB are extremely important as the eruption predicted for 2024 draws closer. See HERE for more information. - Elizabeth O. Waagen, July 5, 2023, July 2, 2024
Please continue to monitor T CrB until further notice. - Elizabeth O Waagen, February 9, 2023
Alert Notice 792: R Aqr photometry and spectroscopy requested in support of Chandra observations
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
Alert Notice 750: T CrB photometry and spectroscopy requested for HST and XMM-Newton observations
Note: Ongoing observations of T CrB are extremely important as the eruption predicted for 2024 draws closer. See HERE for more information. - Elizabeth O. Waagen, July 5, 2023, July 2, 2024
Please continue to monitor T CrB until further notice. - Elizabeth O Waagen, February 9, 2023
Alert Notice 738: R Aqr monitoring needed in support of Chandra and HST observations
Note: The minimum of R Aqr has passed; ongoing observations, especially in B and V, are essential. Please continue to observe R Aqr until further notice. - Elizabeth O. Waagen, July 5, 2022
The HST observations were successfully obtained. Please continue to observe R Aqr until further notice. - Elizabeth O. Waagen, July 6, 2021
The Chandra observations have been completed. The HST observations will take place 2021 May 13 10:57:01 - 18:08:28 UT. - Elizabeth O. Waagen, May 4, 2021
Alert Notice 734: HM Sge monitoring needed for HST and SOFIA observations
Note: Please continue observing HM Sge until further notice. - Elizabeth O. Waagen, May 2, 2022
SOFIA observations are planned in 2021 for June/July and November/December, so please continue to observe HM Sge throughout the observing season. - Elizabeth O. Waagen, May 3, 2021
March 15, 2021
Alert Notice 708: Test exposures requested for symbiotic binary candidates
Note: The target table was edited to add the range. - Elizabeth O. Waagen, 18 June 2020
June 17, 2020
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/test-exposures-for-symbiotic-binary-candidates-campaign
Adrian B. Lucy (Columbia University) requests the assistance of AAVSO observers, and writes:
Alert Notice 695: HST to observe V694 Mon (MWC 560)
Note: The Chandra observations took place, and Dr. Karovaska requests continued monitoring of V694 Mon (MWC 560) until further notice. - Elizabeth O. Waagen, 17 April 2020
Observations of V694 Mon are scheduled for 11 March 2020 with HST, and for 22 March 2020 with XMM. Please continue to observe as indicated below but with the high-intensity coverage taking place March 9 through March 14 and March 19 through March 25. - Elizabeth O. Waagen, 6 March 2020
Alert Notice 692: V694 Mon (MWC 560) to be observed with Chandra
Note: Note: Observations of V694 Mon are scheduled for 11 March 2020 with HST, and for 22 March 2020 with XMM. Please continue to observe as indicated in Alert Notice 695 but with the high-intensity coverage taking place March 9 through March 14 and March 19 through March 25. - Elizabeth O. Waagen, 6 March 2020
Alert Notice 689: R Aqr monitoring needed in support of HST and Chandra observations
Note: Please continue observations in all bands (particularly B and V) and spectroscopy - they are extremely important. - Elizabeth O. Waagen, 18 April 2023
Continued observations in all bands (particularly B and V) and spectroscopy are extremely important. Please continue nightly observations until further notice. - Elizabeth O. Waagen, 31 January 2020
Note: The exact schedules for the Chandra and HST observations of R Aqr (Alert Notice 689) are as follow: