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: 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
Alert Notice 841: VY Scl coverage needed now for HST ToO observations (backup copy)
Notes: HST will not be able to observe VY Scl at this time, so the observations have been canceled. However, the data being obtained by you continue to be extremely valuable to the astronomers, and continuing coverage is requested until after VY Scl has returned to its bright state. Thank you! - Elizabeth O. Waagen, January 31, 2024