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JD Calendar for 2020

The 2020 Julian Day Calendar is now available for download.

HAPPY NEW YEAR!

 

Solar Bulletin - Volume 75, Number 11

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

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

JAAVSO Volume 47 Number 2, 2019 is published

eJAAVSO

 

http://www.aavso.org/apps/jaavso/volumes/

The printed version of this issue will be available soon. Please watch for the announcement on our main web page.

Alert Notice 686: B-band photometry of TYC 2597-735-1 urgently needed

November 19, 2019

AAVSO Forum thread (scroll to the bottom of a thread for latest posts):
- Campaigns and Observation Reports:
https://www.aavso.org/tyc-2597-735-1-campaign-2019

Dr. Keri Hoadley (California Institute of Technology) requests AAVSO observers' assistance in obtaining B-band images of the star TYC 2597-735-1 over the next few weeks. This campaign needs to be accomplished before the target becomes unobservable in the West.

AAVSO Alert Notice 685: EM Cyg monitoring requested

NOTES: Dr. Ruiz-Carmona communicated that this campaign is concluded as of December 19, 2019. - Elizabeth O. Waagen, December 19, 2019

Dr. Ruiz-Carmona communicates that they would like to observe EM Cyg after another outburst to obtain further data. Please continue to monitor EM Cyg as instructed below until further notice. - Elizabeth O. Waagen, December 2, 2019

November 8, 2019

Alert Notice 684: Photometry requested for campaign on V1491 Cyg

Note: This campaign is continued until 2040 (very longterm!).  -  Elizabeth O. Waagen, 16 April 2020

November 1, 2019

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
 - Campaigns and Observing Reports: https://www.aavso.org/v1491-cyg-campaign-2019
 - Young Stellar Objects: https://www.aavso.org/v1491-cyg-campaign-2019-01
 

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