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Alert Notice 586: Status of 20 cataclysmic variables needed for WHT campaign

July 7, 2017: Roque Ruiz-Carmona (Ph.D. candidate, Institute of Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen, The Netherlands) has requested AAVSO assistance in determining the status of 20 eclipsing cataclysmic variables (CVs) in order to select one system in outburst for observation with the William Herschel Telescope (WHT) at La Palma, to detect and study spiral density waves in the system. The WHT observations will begin on 2017 July 11 UT.

Charts and Sequences Team Update June 2017

The charts and sequences team has been busy over the last several months preparing new sequences for newly discovered objects and revised sequences intended to improve existing sequences. If you observe any of these objects please update your charts and/or sequences. A file in .xlsx format is attached below for your convenience.

AAVSO Newsletter 73, July 2017, is published

AAVSO Newsletter 73, July 2017 is now available to members

The AAVSO Newsletter is a periodic, general forum that supports our various observing programs with lists of new targets, observing programming ideas, and general information that spans a wide area of interest. Guest writers contribute pieces that can range from current events to book reviews.

http://www.aavso.org/aavso-newsletter

JAAVSO volume 45, number 1, June 2017, print version now available

eJAAVSO

The Journal of the American Association of Variable Star Observers
Volume 45, Number 1, 2017

The printed version of this issue is now available from Createspace via the link below.

Volume 45, Number 1, 2017

Alert Notice 583: Photometry requested for Red Dots campaign

June 16, 2017:  John Strachan (Queen Mary University of London) and Dr. Guillem Anglada-Escude (Queen Mary University of London) have requested AAVSO assistance in the monitoring of three M dwarf stars as part of the Red Dots campaign.

Alert Notice 582: Nova Oph 2017 photometry requested for Swift TOO observations

June 15, 2017: Drs. Frederick Walter (Stony Brook University) and Paul Kuin (University College London) and colleagues have requested AAVSO observers' assistance in obtaining photometry of Nova Oph 2017 (TCP J17394608-2457555) in support of Target-of-Opportunity observations with Swift UVOT that have been triggered and are scheduled for the next ten days (2017 June 16 - 25), and possibly longer.

Solar Bulletin - Volume 73, Number 05

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

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

JAAVSO Volume 45 Number 1 2017 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.

The Journal of the American Association of Variable Star Observers
Volume 45, Number 1, 2017

Articles in This Issue

Pages

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