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
July 19, 2023
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observing Reports: https://www.aavso.org/v-347-aur-campaign-2023
- Young Stellar Objects: https://www.aavso.org/v-347-aur-campaign-2023-01
May 5, 2023
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observing Reports: https://www.aavso.org/ar-uma-campaign-2023
- Cataclysmic Variables: https://www.aavso.org/ar-uma-campaign-2023-01
Note: RU Lup is being observed with HST August 10-20, 2022. Please see Alert Notice 788 for details. - Elizabeth O. Waagen, August 1, 2022
August 3, 2021
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
Note: Please continue coverage of these targets until further notice. - Elizabeth O. Waagen, 1 February 2021
August 14, 2020
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observing Reports: https://www.aavso.org/five-t-tau-stars-XMM-campaign
- Young Stellar Objects: https://www.aavso.org/five-t-tau-stars-XMM-campaign-0
February 12, 2018: Dr. Koji Mukai (NASA Goddard Space Flight Center) and colleagues have requested AAVSO observations of the WZ Sge type dwarf nova GW Lib in support of observations with the ESA XMM-Newton spaceobservatory scheduled for
2018 February 17 05:46:41 - 21:36:41 UT
December 1, 2017: Dr. Mark Kennedy (Jodrell Bank Centre for Astrophysics, University of Manchester) requests AAVSO observers' assistance in providing optical coverage of the polar MASTER OT J132104.04+560957.8 in support of observations with the XMM-Newton satellite scheduled for this Sunday, 2017 December 3, 08:35:31 UT - 16:38:51 UT.
The XMM-Newton observations themselves will not include an optical component, so photometry provided by AAVSO observers is essential for the interpretation of the X-ray data.
October 10, 2017: Dr. Hauke Wörpel (Leibniz-Institut für Astrophysik Potsdam (AIP)) has requested AAVSO assistance in obtaining observations of the eclipsing intermediate polar (IP) candidate V902 Mon in support of an XMM-Newton observation scheduled for 2017 October 14, 14:42 UT (duration 43,000s).
