AAVSO Alert Notice
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
Alert Notice - Observing Campaign #865: Photometry and Spectroscopy of WR 140 (V1687 Cyg) through its upcoming periastron
AAVSO Alert Notice - Observing Campaign #865: Photometry and Spectroscopy of WR 140 (V1687 Cyg) through its upcoming periastron
September 10, 2024
Alert Notice 796: Monitoring requested for 12 dwarf novae in support of HST observations in 2022-2023 (back-up copy)
The target table below is being updated as each target is completed or rescheduled. - Elizabeth O. Waagen
Notes: LL Lyr was not able to be observed due to issues with HST. It has been rescheduled for the 2023-2024 year of this campaign. - Elizabeth O. Waagen, October 24, 2023
Please observe LL Lyr nightly in anticipation of upcoming HST observations in September. An Alert Notice will be issued when it has been scheduled. - Elizabeth O. Waagen, September 5, 2023
Alert Notice 758: Monitoring requested for 11 dwarf novae in support of HST observations in 2021-2022 (back-up copy)
Note: RY Ser was scheduled for May and for June but was in outburst or too close to outburst to be a safe target. It may be rescheduled. GP Com observations did take place. - Elizabeth O. Waagen, July 5, 2022
GP Com observations will take place April 29-30, 2022; coverage is needed until May 20. See Alert Notice 775. - Elizabeth O. Waagen, April 27, 2022
Alert Notice 844: AB Aur HST observations scheduled (back-up copy)
December 20, 2023
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns & Observation Reports: https://www.aavso.org/ab-aur-campaign-2023
- Young Stellar Objects: https://www.aavso.org/ab-aur-campaign-2023-01
Alert Notice 868: Photometry of BZ Camelopardalis in support of HST, Chandra multiwavelength observing campaign
Alert Notice 868: Photometry of BZ Camelopardalis in support of HST, Chandra multiwavelength observing campaign
Alert Notice 869: CS Ind HST schedule set for August 30
AAVSO Alert Notice 869
CS Ind HST schedule set for August 30
Alert Notice 859: Photometry and spectroscopy requested for bright binaries being observed with CHARA - Revised (backup copy)
Note: Some of the targets below are being re-assessed for continued coverage. For the present, please continue to observe all targets. - Elizabeth O. Waagen, September 30, 2024
The Alert Notice text below has been revised from the original version issued April 18, 2024. - Elizabeth O. Waagen, April 19, 2024
Alert Notice 841: VY Scl coverage needed now for HST ToO observations (backup copy)
Notes: VY Scl has brightened nearly to its high state but may turn around again; ongoing observations are requested. - Elizabeth O. Waagen, October 7, 2025
VY Scl is currently in its low state, and ongoing observations are requested. - Elizabeth O. Waagen, February 4, 2025; May 6, 2025