visual observing

Special Notice #405: Request for Monitoring of V4641 Sgr

August 4, 2015:  Dr. Gregory Sivakoff (U. of Alberta) has requested optical monitoring of the galactic microquasar V4641 Sgr beginning immediately, and continuing for the next 120 days, or until it is no longer observable from your location.

Visual Observing Manual in Persian - 2013 edition

The Persian (Farsi) version of the June 2013 revision of Manual for Visual Observing of Variable Stars - راهنمای رصد بصری ستارگان متغیر is now available for download here:

http://www.aavso.org/visual-observing-manual-persian

This Manual is available free-of-charge and may be reproduced and distributed as needed.

Manual for Visual Observing of Variable Stars - update

The Manual for Visual Observing of Variable Stars (in English) has just been updated. To download this new and improved version, please visit http://www.aavso.org/visual-observing-manual.

Many thanks to Mike Simonsen, Elizabeth Waagen and Matthew Templeton for their input and helpful suggestions.

Sara Beck
AAVSO Technical Staff, Science Team