Skip to main content

front page news

All nodes that have this tag will posted to the home page "Recent Activity" block

AAVSO Annual Report for 2018-2019 online

The AAVSO Annual Report for 2018-2019 has been published and is online. Both a high-resolution and a low-resolution version are available at https://www.aavso.org/annual-report.

Alert Notice 695: HST to observe V694 Mon (MWC 560)

Note: Note: The Chandra observations took place, and Dr. Karovaska requests continued monitoring of V694 Mon (MWC 560) until further notice.  -  Elizabeth O. Waagen, 17 April 2020

Alert Notice 694: Spectroscopy of gamma Cas requested

Note: Principal Investigator Ernst Pollmann particularly requests higher-resolution (at least 10000) spectra of gam Cas.  -  Elizabeth O. Waagen, 21 May 2020

January 31, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports: https://www.aavso.org/gam-cas-campaign
- Spectroscopy: https://www.aavso.org/gam-cas-campaign-01

Star of the Month - February 2020 - Alpha Ori

Alpha Orionis
By Rich Roberts

Alert Notice 693: V582 Mon monitoring requested

January 24, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
  -   Campaigns and Observing Reports: https://www.aavso.org/v582-mon-campaign-2020
  -   Young Stellar Objects: https://www.aavso.org/v582-mon-campaign-2020-01

Alert Notice 692: V694 Mon (MWC 560) to be observed with Chandra

Note: Note: Observations of V694 Mon are scheduled for 11 March 2020 with HST, and for 22 March 2020 with XMM. Please continue to observe as indicated in Alert Notice 695 but with the high-intensity coverage taking place March 9 through March 14 and March 19 through March 25.  -  Elizabeth O. Waagen, 6 March 2020

Solar Bulletin - Volume 75, Number 12

The December Solar Bulletin is now available. Please visit the Solar Bulletin web page to download your copy: https://www.aavso.org/solar-bulletin

 

The December SID Data report is available here: https://www.aavso.org/sid-database

 

Alert Notice 691: Request for immediate photometric monitoring of the fading star ASASSN-V J060000.76-310027.83

Note: As of 2020 March 2, Dr. Kenworthy asks that the campaign continue. He writes that "...the ring eclipse seems to have finished, but the star's overall brightness is slowly dropping. I don't think the story is over...the star is now 0.3 magnitudes fainter than its out of eclipse levels - still something interesting going on!" Please continue observations as described below until further notice.  -  Elizabeth O. Waagen, 2 March 2020

Pages

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484