2013 JD Calendar
The 2013 JD Calendar is now available.
Go to the JD Calendar page and scroll down to the bottom where you will be able to view or download the new calendar.
Clear Skies!
new observers
Visual Observing Manual in Persian
The Manual for Visual Observing of Variable Stars is now available in Persian (Farsi).
http://www.aavso.org/visual-observing-manual-persian
This translation would not have been possible without the hard work and dedication of volunteers Fatemeh Bahrani and her colleagues, Ali Honarmand, Fateme Kayanikhoo, Mozhde Mohamadi, Sajad Safari, and Arezoo Saleki of the Dr. Hesabi Institute in Shiraz, Iran (http://www.dr-hesabi.org).
Visual Observing Manual - Persian
Complete Manual:
(4.5 MB) راهنمای رصد بصری ستارگان متغیر
Sections:
(257 KB) مقدمه
(1.1 MB) فصل 1 – آماده سازی
Visual Observing Manual - Hungarian
Complete Manual: Vizuális Változócsillag-észlelők Kézikönyve (7.3 MB)
Sections:
BEVEZETÉS (354 KB)
1. FEJEZET – ELŐKÉSZÜLETEK (915 KB)
2012 JD Calendar
The 2012 JD Calendar is now available.
Just go to the JD Calendar page and scroll down to the bottom where you will be able to view or download the new calendar.
Happy observing!
Visual Observing Manual updates
The Manual for Visual Observing of Variable Stars has been updated to reflect changes to the VSP and WebObs that happened when the new website was launched last summer. This mostly affects Chapters 2 and 7. To download these and other chapters, or the entire Manual, please click on the link below:
http://www.aavso.org/visual-observing-manual
You will also find versions of the Manual translated into seven other languages on this page.
Stay tuned for the Portuguese verson, due to be completed soon!
Visual Observing Manual - Portuguese
Complete Manual - Manual para Observação Visual de Estrelas Variáveis (8.2 MB)
Published 1 September 2011
Sections:
2011 JD Calendar
The 2011 JD Calendar is now available.
Frequency of Observations for Different Variable Star Types
Visual observations of variable stars make up the largest component of the AAVSO International Database now containing over 19 million observations on thousands of variable stars. These stars are primarily large-amplitude (visual range greater than one magnitude).