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
December 4, 2019
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/lpv-maser-2018-campaign
- Long Period Variables: https://www.aavso.org/lpv-maser-2018-campaign-01
Note: This campaign has been extended to October 2020 and the list of targets has been revised. Please see AAVSO Alert Notice 687 for details. - Elizabeth O. Waagen, December 4, 2019
Note: This campaign has been extended to October 2020 and the list of targets has been revised. Please see AAVSO Alert Notice 687 for details. - Elizabeth O. Waagen, December 4, 2019
July 31, 2018: Michael Stroh (Ph.D. candidate, University of New Mexico) requests AAVSO assistance in monitoring 19 LPVs in support of a VLA campaign studying SiO masers. AAVSO monitoring begins now and goes through October 2019.
In AAVSO Bulletin 81 there are two stars that exhibit double maxima: R Cen and R Nor. These stars therefore have primary and secondary maxima and minima. They are not included in the main Bulletin table.
AAVSO Bulletin 81 - Predicted Dates of Maxima and Minima of Long Period Variables for 2018 - is published in the format that was introduced in 2011.
AAVSO Bulletin 81: Predicted Dates of Maxima and Minima of
381 Long Period Variables for 2018
Letter to Users of 2018 Bulletin
Predicted Dates of Maxima and Minima of 381 Long Period Variables for 2018
What are variable stars and why are astronomers interested in them?
