JAAVSO Volume 47 Number 2, 2019 is published

Articles in This Issue

• Editorial

  • So Long, and Thanks for All the Manuscripts

    John R. Percy

  • Life, Variable Stars, and Everything

    Nancy D. Morrison

• Variable Star Research

  • Photometric Analysis of V633 Virginis

    Surjit S. Wadhwa

  • High Occurrence Optical Spikes and Quasi-Periodic Pulses (QPPs) on X-ray Star 47 Cassiopeiae

    Gary Vander Haagen

  • BVRcIc Photometric Observations and Analyses of the Totally Eclipsing, Solar Type Binary, OR Leonis

    Ronald G. Samec, Daniel B. Caton, Danny R. Faulkner

  • VRcIc Photometric Study of the Totally Eclipsing Pre-W UMa Binary, V616 Camelopardalis: Is it Detached?

    Ronald G. Samec, Daniel B. Caton, Davis R. Gentry, Danny R. Faulkner

  • The Long-term Period Changes and Evolution of V1, a W Virginis Star in the Globular Cluster M12

    Pradip Karmakar, Horace A. Smith, Nathan De Lee

  • A New Candidate δ Scuti Star in Centaurus: HD 121191

    Roy A. Axelsen

  • Observations and Analysis of a Detached Eclipsing Binary, V385 Camelopardalis

    Ronald G. Samec, Daniel B. Caton, Danny R. Faulkner

  • Multi-filter Photometric Analysis of W Ursae Majoris (W UMa) Type Eclipsing Binary Stars KID 11405559 and V342 Boo

    Tatsuya Akiba, Andrew Neugarten, Charlyn Ortmann, Vayujeet Gokhale

  • Observations and Preliminary Modeling of the Light Curves of Eclipsing Binary Systems NSVS 7322420 and NSVS 5726288

    Mathew F. Knote, Ronald H. Kaitchuck, Robert C. Berrington

  • Period Analysis of All-Sky Automated Survey for Supernovae (ASAS-SN) Data on Pulsating Red Giants

    John R. Percy, Lucas Fenaux

  • A Photometric Study of Five Low Mass Contact Binaries

    Edward J. Michaels

  • Medium-term Variation in Times of Minimum of Algol-type Binaries: XZ And, RZ Cas, U Cep, TW Dra, U Sge

    Geoff B. Chaplin

  • CCD Photometry, Period Analysis, and Evolutionary Status of the Pulsating Variable V544 Andromedae

    Kevin B. Alton

  • ASAS-SN Observations of Long Secondary Periods in Pulsating Red Giants

    John R. Percy, Anthony Mark Wallace

• Education and Outreach

  • Sky Brightness Measurements and Ways to Mitigate Light Pollution in Kirksville, Missouri

    Vayujeet Gokhale, Jordan Goins, Ashley Herdmann, Eric Hilker, Emily Wren, David Caples, James Tompkins

• Instruments, Methods, and Techniques

  • Automated Data Reduction at a Small College Observatory

    Donald A. Smith, Hollis B. Akins

• Variable Star Data

  • The Contribution of A. W. Roberts’ Observations to the AAVSO International Database

    Tim Cooper

  • Recent Minima of 200 Eclipsing Binary Stars

    Gerard Samolyk

  • Recent Minima of 267 Recently Discovered Eclipsing Variable Stars

    Gerard Samolyk, Vance Petriew

• Abstracts

  • A Robotic Observatory System that Anyone Can Use for Education, Astro-Imaging, Research, or Fun! (Abstract)

    David Lane

  • DASCH Project Update (Abstract)

    Edward Los

  • The Eye is Mightier than the Algorithm: Lessons Learned from the Erroneous Classification of ASAS Variables as “Miscellaneous” (Abstract)

    Kristine Larsen

  • Contributions of the AAVSO to Year 1 of TESS (Abstract)

    Dennis Conti, Stella Kafka

  • The Project PHaEDRA Collection: An Anchor to Connect Modern Science with Historical Data (Abstract)

    Peggy Wargelin

  • The Eclipsing Triple Star System b Persei (HD 26961) (Abstract)

    Donald F. Collins

  • Photometric Accuracy of CMOS and CCD Cameras (Preliminary Results) (Abstract)

    Kenneth T. Menzies

  • Measuring and Correcting Non-linearities in ABG Cameras (Abstract)

    Richard Wagner

  • A Simple Objective Prism Spectrograph for Educational Purposes (Abstract)

    John Thompson

  • Studies of Pulsating Red Giants using AAVSO and ASAS-SN Data (Abstract)

    John R. Percy, Lucas Fenaux

  • Variable Stars in the College Classroom (Abstract)

    Kristine Larsen

  • A Study of RR Lyrae Variable Stars in a Professor-Student Collaboration using the American Public University System (APUS) Observatory (Abstract)

    David Syndergaard, Melanie Crowson

  • The Rotating Frame (Abstract)

    Christa Van Laerhoven

  • Five Years of CCD photometry (Abstract)

    Damien Lemay

  • How-to Hour—Planning an Observing Program (Abstract)

    Kenneth J. Menzies, Michael J. Cook, Franz-Josef (Josch) Hambsch

  • The Zooniverse (Abstract)

    L. Clifton Johnson

  • The BRITE Constellation Mission (Abstract)

    Gregg Wade

  • The Importance of Religion and Art in Sowing the Seeds of Success of the U.S. Space Program in the 1940s and 1950s (Abstract)

    Catherine L. Newell

  • Public Outreach Through the Cronyn Observatory (Abstract)

    Jan Cami

  • Canada’s Role in the James Webb Space Telescope (Abstract)

    Nathalie Ouellette

  • Helen Sawyer Hogg: One Woman’s Journey with the Stars (Abstract)

    Maria J. Cahill

  • Some Memories of the David Dunlap Observatory (Abstract)

    Donald C. Morton

  • Canada’s Role in the Maunakea Spectroscopic Explorer (Abstract)

    Alan McConnachie

  • Shadow Chasers 2017 (Abstract)

    David Shuman, Paul Simard

  • Toronto’s Astronomical Heritage (Abstract)

    John R. Percy

  • On the Construction of the Heav’ns: A Multi-media, Interdisciplinary Concert and Outreach Event (Abstract)

    James E. Hesser, David Lee, W. John McDonald

  • Who doth not see the measures of the Moon/ Which thirteen times she danceth every year?/ And ends her pavan thirteen times as soon (Abstract)

    David H. Levy, R. A. Rosenfeld

  • Dorner Telescope Museum (Abstract)

    Rudolph Dorner, Randall Rosenfeld

  • Science of the Stars: The National Heritage of the Dominion Observatory (Abstract)

    Sharon Odell

  • RASC Robotic Telescope Project (Abstract)

    Paul Mortfield

  • The Past, Present and Future of Youth Outreach at the RASC (Abstract)

    Jenna Hinds

  • Bringing Astronomy Alive—Student Engagement at John Abbott College (Abstract)

    Karim Jaffer

  • A Story of Spectroscopy: How Stellar Composition is Made Clear through Deceptively Simple Tools (Abstract)

    Julien da Silva

  • Things You May Not Know about the Apollo 11 Mission (Abstract)

    Randy Attwood

  • Teaching Neil to Land—Simulators Used in the Apollo Program (Abstract)

    Ron MacNaughton

  • First Man—The Life of Neil Armstrong (Abstract)

    James R. Hansen

  • Flare Stars: A Short Review (Abstract)

    Krstinja Dzombeta, John R. Percy

• Errata

  • Erratum: KAO-EGYPT J064512.06+341749.2 is a Low Amplitude and Multi-Periodic δ Scuti Variable Star

    Ahmed Essam, Mohamed Abdel-Sabour, Gamal Bakr Ali