Note: Please continue observations until further notice. - Elizabeth O. Waagen, December 5, 2023
December 16, 2022
AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/rw-cep-dimming
- Long Period Variables: https://www.aavso.org/rw-cep-dimming-01
R Cygni
By Rich Roberts
SS Crucis—Reflections on a Forgotten Mira Variable
By Peter Williams
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
Y Per is a unique carbon star (C4,3e(R4e)) with a long history of AAVSO coverage. Y Per is located at RA 3:27:42.39 and DEC +44:10:36.5, so it can only be enjoyed by those of us in the Northern Hemisphere. Y Per is listed as a Mira star in VSX; however, this may no longer be the case. VSX also lists the magnitude range from 8.1 to 11.3; however, in the last 10 years the star has ranged between 8.5 and 10.5.
TX Psc is a very bright, nearby star which is well studied and of interest to professional astronomers. One observer from the BAA-VSS logged a few observations back in 1887 after which the star seemed to have been forgotten about until 1947 when regular visual observations picked up again. There are currently 13,515 observations in the AID, 91.6% of which are visual.
V Crb (15 49 31.31 +39 34 17.9, J2000) is a peculiar orange-red carbon-star (C6,2e (N2e)) with a long history of AAVSO coverage. Since V CrB recently became an asymptomatic giant branch star, it is currently in its hydrogen shell and helium shell burning stage of life. V CrB is in the legacy LPV program and Percy’s list of pulsating red giants (PRGs) exhibiting unusual behavior. The AID currently holds 34,114 observations by 1248 different observers since 1904.
The AAVSO has numerous observing aids designed to help you make the most efficient use of your valuable observing time. Each Observing Section and each mode of observing has a variety of resources – be sure to visit these pages and explore the links. The best place to start is the "Observing at a Glance – for Observers" page (https://www.aavso.org/observers).
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
