Volume 20 number 1 — 1991

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Articles in This Issue

• Instruments, Methods, and Techniques

• A Method of Creating AAVSO Observing Charts by Computer

  Charles E. Scovil, Robert A. Leitner

• Computer Image Processing Techniques for the Production of AAVSO Observing Charts

  Gilbert Weingarten

• Variable Star Research

• Visual and Photoelectric Observations of DM Persei

  David B. Williams

• pi PsA--Who Are You?

  Axel Thomas

• Photoelectric Photometry of the Carbon Star V614 Monocerotis

  Rick Wasatonic

• CCD Photometry of the RR Lyrae Star SS Leonis

  A. L. Anderson, W. J. Bestman, S. A. Bieszke, J. Blanchard, M. R. McPherson, T. R. McWilliams, S. T. Mikusko, E. C. Morse, T. N. Philpott, P. Sasse, D. T. Slee, D. A. Ventimiglia, H. A. Smith

• V3821 Sgr and a Nearby Carbon Star

  Dorrit Hoffleit

• Period Update for V418 Cassiopeiae

  Daniel H. Kaiser, Michael J. Collins

• Southern Variable/NSV Survey

  Robert DeMartino, Michael Dzubaty, Dennis Kocyla, Christopher Predom, Edward Wetherbee

• Recent Data on IU Cygni

  Deborah C. Banks

• Examination of the Complicated Cepheid HR 7308

  Juan E. Cabanela

• Analysis of AC Comae Berenices

  Leith E. Dwyer

• Updated Periods for CG and GY Coronae Berenices

  Holly Jessop

• A Revision and Update for V1176 Sagittarii

  Holly Jessop

• The Puzzling Behavior of EM Coronae Berenices

  John C. Krueger

• A Revision of the Variable Period of IM Aquilae

  Dana Lehr

• An Amplitude Analysis of TU Cassiopeiae

  Vicki Mader

• QY Cygni Re-Examined

  Cynthia J. Ray

• The Periods of NS and EP Cygni

  David J. Reiss

• The Complicated Period Changes of IV Cygni

  Sandra M. Sweller

• Another Look at the Period of HS Aquilae

  Lisa Wenner

• History and Biography

• Phoebe Haas--An AAVSO Volunteer

  Thomas R. Williams

• Education and Outreach

• Variable Star Observations in an Introductory Astronomy Course

  C. Martin Gaskell

• Errata

• The Elements of V714 Cygni: Erratum

  Emilia P. Belserene

• Solar

• Definitive American Relative Sunspot Numbers for 1990

  Peter O. Taylor

• A Long-Lived Active Area on the Sun

  Peter O. Taylor, Matei Alexescu

• Letters to the Editor

• Letter to the Editor--"Combatting Light Pollution: The International Dark-Sky Association, Inc. (IDA)"

  Tim Hunter

• Book Reviews

• Book Review--Observing Variable Stars: A Guide for the Beginner

  John W. III Griese

• Abstracts

• A Low Frequency Tunable Gravitational Wave Antenna (Abstract)

  Casper Hossfield

• AR Herculis: Examination of Recent Behavior (Abstract)

  Marvin E. Baldwin

• The Objectives, Construction, and Many Uses of the Drew Observatory (Abstract)

  John C., Jr. Dawson

• Archaeoastronomy of the Old Stone Tower, Newport, RI (Abstract)

  William S. Penhallow, Michael J. Brennan

• Variations in the Surface Brightness of the Rotten Egg Nebula--OH231.8+4.2 (Abstract)

  Joel Kastner, David Weintraub, Ben Zuckerman, Ian Gatley

• Analysis of AAVSO Visual Observations of Four Small-Amplitude Red Variables (Abstract)

  John R. Percy, Jorge Ralli

• Radial Velocities and Photometry: FS Comae Berenices, Epsilon Aurigae, Miras, and the Search for Low-Mass S* (Abstract)

  Robert Stefanik

• Shapley's Model for Cepheids (Abstract)

  Barbara L. Welther

• Some Variable Star Research Projects for Undergraduate College Students (Abstract)

  Frederick R. West

• Organizational/Administrative

• Minutes of the 80th Spring Meeting (Charlestown, RI)

  Clinton B. Ford

• Chart Distribution Report

  AAVSO Headquarters

• Classical Cepheid Committee Report

  Thomas A. Cragg

• New Chart Committee Report

  Clinton B. Ford

• Spring 1990-1991 Committee Reports

  Various

• Eclipsing Binary Committee Report

  Marvin E. Baldwin

• Nova Search Committee Report

  Kenneth C. Beckmann

• Photoelectric Photometry Committee Report

  Howard J. Landis

• RR Lyrae Committee Report

  Marvin E. Baldwin

• Solar Division Committee Report

  Peter O. Taylor

• Journal of the AAVSO

  Charles A. Whitney

• Supernova Search Committee Report

  Robert O. Evans

• Telescope Committee Report

  Charles E. Scovil

• Treasurer's Report, October 1, 1990-March 31, 1991

  Theodore H. N. Wales

• Corrected Observer Totals for 1988-1989

  Anon.