Skip to main content

front page news

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

2016 CHOICE Course Schedule

We are pleased to announce the return of many of your favorite CHOICE courses this year. 

The tentative schedule is listed below. Click on the course name to read its description. Dates and classes may change due to availability of instructors for the courses.

The last fundraising letter

Dear AAVSO Supporters,
 
This is the last fundraising letter you will get from the AAVSO in 2014, I promise.

Solar Bulletin - Volume 70, Number 11

The November 2014 Solar Bulletin is now available. Please visit the Solar Bulletin web page to download your copy: http://www.aavso.org/solar-bulletin

JAAVSO Vol. 42, No. 2, 2014 is published

Journal of the American Association of Variable Star Observers
Volume 42, Number 2, 2014

TABLE OF CONTENTS

Does the Period of a Pulsating Star Depend on its Amplitude?
John R. Percy, Jeong Yeon Yook    245

CT Lacertae: Another Long-period Carbon Star with Long-Timescale Variations?
Matthew R. Templeton, Peter Maurer, Wolfgang Kriebel, Wayne M. Lowder (1932–2003),
Etienne Morelle, Steve O’Connor, Andrzej Arminski, Laurent Bichon, John E. Bortle    260

Special Notice #393: Correction to Special Notice #392 [ASASSN-14lp]

December 11, 2014: In AAVSO Special Notice #392, the name of the supernova discovered in NGC 4666 was given as ASASSN-141p. It should have been ASASSN-14lp. That is to say, the text following the dash should
be "fourteen ell pee" and not "fourteen one pee".

Please create charts and submit observations using the name ASASSN-14lp.

Sincere apologies for the error!

This AAVSO Special Notice was compiled by Elizabeth O. Waagen.

Special Notice #392: ASASSN-14lp = Type Ia Supernova in NGC 4666 (Virgo)

December 11, 2014: T. W.-S. Holoien et al. announce in The Astronomer's Telegram (ATel) #6795 (http://www.astronomerstelegram.org/?read=6795) the discovery of a transient in NGC 4666 at magnitude 14.3 V on 2014 December 9.61 UT. The discovery was made in the course of the All Sky Automated Survey for SuperNovae (ASASSN) search, and the object assigned the name ASASSN-14lp. ASASSN-14lp was not seen (<15.3 V) in poor-quality ASASSN images obtained on 2104 Dec. 08.35 UT.

2016 JD Calendar

The 2016 Julian Day calendar is now available for your viewing or downloading pleasure.

 

Datos de la BAAVSS ahora disponibles a través de la AAVSO

La American Association of Variable Star Observers (AAVSO) y la British Astronomical Association Variable Star Section (BAAVSS) tienen el agrado de anunciar que el archivo de observaciones de estrellas variables de la BAAVSS ya está disponible a través del sitio web de AAVSO. Los archivos de la BAAVSS cuentan con más de 2,5 millones de observaciones de estrellas variables realizadas en su mayoría por astrónomos aficionados de todo el mundo durante los pasados 150 años.

Special Notice #391: Targets Remaining in Northern Dwarf Novae Campaign

December 2, 2014: AAVSO Alert Notice 505 (http://www.aavso.org/aavso-alert-notice-505) announced the campaign on several northern dwarf novae by Deanne Coppejans and colleagues. This campaign, searching for radio jets in dwarf novae, has been moving very quickly! Thanks to your observations and timely notifications, three of the five sets of VLA observations available for the targets have been used on Z Cam, RX And, and YZ Cnc. The PI is extremely appreciative and thanks you all for your excellent work.

Pages

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