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Download This Issue (Pdf) Volume 46 Number 2 JAAVSO 2018 The Journal of the American Association of Variable Star Observers Unmanned Aerial Systems for Variable Star Astronomical Observations The NASA Altair UAV in flight. Also in this issue... • A Study of Pulsation and Fadings in some R CrB Stars • Photometry and Light Curve Modeling of HO Psc and V535 Peg • Singular Spectrum Analysis: S Per and RZ Cas • New Observations, Period and Classification of V552 Cas • Photometry of Fifteen New Variable Sources Discovered by IMSNG Complete table of contents inside... The American Association of Variable Star Observers 49 Bay State Road, Cambridge, MA 02138, USA The Journal of the American Association of Variable Star Observers Editor John R. Percy Laszlo L. Kiss Ulisse Munari Dunlap Institute of Astronomy Konkoly Observatory INAF/Astronomical Observatory and Astrophysics Budapest, Hungary of Padua and University of Toronto Asiago, Italy Toronto, Ontario, Canada Katrien Kolenberg Universities of Antwerp Karen Pollard Associate Editor and of Leuven, Belgium Director, Mt. John Observatory Elizabeth O. Waagen and Harvard-Smithsonian Center University of Canterbury for Astrophysics Christchurch, New Zealand Production Editor Cambridge, Massachusetts Michael Saladyga Nikolaus Vogt Kristine Larsen Universidad de Valparaiso Department of Geological Sciences, Valparaiso, Chile Editorial Board Central Connecticut State Geoffrey C. Clayton University, Louisiana State University New Britain, Connecticut Baton Rouge, Louisiana Vanessa McBride Kosmas Gazeas IAU Office of Astronomy for University of Athens Development; South African Athens, Greece Astronomical Observatory; and University of Cape Town, South Africa The Council of the American Association of Variable Star Observers 2017–2018 Director Stella Kafka President Kristine Larsen Past President Jennifer L. Sokoloski 1st Vice President Bill Stein 2nd Vice President Kevin B. Marvel Secretary Gary Walker Treasurer Robert Stephens Councilors Richard Berry Katrien Kolenberg Tom Calderwood Arlo Landolt Michael Cook Gordon Myers Joyce A. Guzik Gregory R. Sivakoff Michael Joner ISSN 0271-9053 (print) ISSN 2380-3606 (online) JAAVSO The Journal of The American Association of Variable Star Observers Volume 46 Number 2 2018 AAVSO 49 Bay State Road ISSN 0271-9053 (print) Cambridge, MA 02138 ISSN 2380-3606 (online) USA Publication Schedule The Journal of the American Association of Variable Star Observers is published twice a year, June 15 (Number 1 of the volume) and December 15 (Number 2 of the volume). The submission window for inclusion in the next issue of JAAVSO closes six weeks before the publication date. A manuscript will be added to the table of contents for an issue when it has been fully accepted for publication upon successful completion of the referee process; these articles will be available online prior to the publication date. An author may not specify in which issue of JAAVSO a manuscript is to be published; accepted manuscripts will be published in the next available issue, except under extraordinary circumstances. Page Charges Page charges are waived for Members of the AAVSO. Publication of unsolicited manuscripts in JAAVSO requires a page charge of US $100/page for the final printed manuscript. Page charge waivers may be provided under certain circumstances. Publication in JAAVSO With the exception of abstracts of papers presented at AAVSO meetings, papers submitted to JAAVSO are peer-reviewed by individuals knowledgable about the topic being discussed. We cannot guarantee that all submissions to JAAVSO will be published, but we encourage authors of all experience levels and in all fields related to variable star astronomy and the AAVSO to submit manuscripts. We especially encourage students and other mentees of researchers affiliated with the AAVSO to submit results of their completed research. Subscriptions Institutions and Libraries may subscribe to JAAVSO as part of the Complete Publications Package or as an individual subscription. Individuals may purchase printed copies of recent JAAVSO issues via Createspace. Paper copies of JAAVSO issues prior to volume 36 are available in limited quantities directly from AAVSO Headquarters; please contact the AAVSO for available issues. Instructions for Submissions The Journal of the AAVSO welcomes papers from all persons concerned with the study of variable stars and topics specifically related to variability. All manuscripts should be written in a style designed to provide clear expositions of the topic. Contributors are encouraged to submit digitized text in MS WORD, LATEX+POSTSCRIPT, or plain-text format. Manuscripts may be mailed electronically to [email protected] or submitted by postal mail to JAAVSO, 49 Bay State Road, Cambridge, MA 02138, USA. Manuscripts must be submitted according to the following guidelines, or they will be returned to the author for correction: Manuscripts must be: 1) original, unpublished material; 2) written in English; 3) accompanied by an abstract of no more than 100 words. 4) not more than 2,500–3,000 words in length (10–12 pages double-spaced). Figures for publication must: 1) be camera-ready or in a high-contrast, high-resolution, standard digitized image format; 2) have all coordinates labeled with division marks on all four sides; 3) be accompanied by a caption that clearly explains all symbols and significance, so that the reader can understand the figure without reference to the text. Maximum published figure space is 4.5” by 7”. When submitting original figures, be sure to allow for reduction in size by making all symbols, letters, and division marks sufficiently large. Photographs and halftone images will be considered for publication if they directly illustrate the text. Tables should be: 1) provided separate from the main body of the text; 2) numbered sequentially and referred to by Arabic number in the text, e.g., Table 1. References: 1) References should relate directly to the text. 2) References should be keyed into the text with the author’s last name and the year of publication, e.g., (Smith 1974; Jones 1974) or Smith (1974) and Jones (1974). 3) In the case of three or more joint authors, the text reference should be written as follows: (Smith et al. 1976). 4) All references must be listed at the end of the text in alphabetical order by the author’s last name and the year of publication, according to the following format: Brown, J., and Green, E. B. 1974, Astrophys. J., 200, 765. Thomas, K. 1982, Phys. Rep., 33, 96. 5) Abbreviations used in references should be based on recent issues of JAAVSO or the listing provided at the beginning of Astronomy and Astrophysics Abstracts (Springer-Verlag). Miscellaneous: 1) Equations should be written on a separate line and given a sequential Arabic number in parentheses near the right-hand margin. Equations should be referred to in the text as, e.g., equation (1). 2) Magnitude will be assumed to be visual unless otherwise specified. 3) Manuscripts may be submitted to referees for review without obligation of publication. Online Access Articles published in JAAVSO, and information for authors and referees may be found online at: https://www.aavso.org/apps/jaavso/ © 2018 The American Association of Variable Star Observers. All rights reserved. The Journal of the American Association of Variable Star Observers Volume 46, Number 2, 2018 Editorial Editorial: Variable Stars: The View from Up Here John R. Percy 91 Variable Star Research Period Study and Analysis of 2017 BVRcIc Observations of the Totally Eclipsing, Solar Type Binary, MT Camelopardalis Ronald G. Samec, Daniel B. Caton, Danny R. Faulkner 93 The First BVRcIc Precision Observations and Preliminary Photometric Analysis of the Near Contact TYC 1488-693-1 Ronald G. Samec, Daniel B. Caton, Danny R. Faulkner, Robert Hill 106 Photometry and Light Curve Modeling of HO Piscium and V535 Pegasi Rahim Heidarnia 122 A Study of Pulsation and Fadings in some R Coronae Borealis (RCB) Stars John R. Percy, Kevin H. Dembski 127 Multi-color Photometry, Roche Lobe Analysis and Period Study of the Overcontact Binary System, GW Bootis Kevin B. Alton 133 Photometry of Fifteen New Variable Sources Discovered by IMSNG Seoyeon Choi, Myungshin Im, Changsu Choi 141 New Observations, Period, and Classification of V552 Cassiopeiae Emil J. L. Pellett 151 Education and Outreach Creating Music Based on Quantitative Data from Variable Stars Cristian A. Droppelmann, Ronald E. Mennickent 154 Instruments, Methods, and Techniques Singular Spectrum Analysis: Illustrated by Application to S Persei and RZ Cassiopeiae Geoff B. Chaplin 157 Unmanned Aerial Systems for Variable Star Astronomical Observations David H. Hinzel 167 Table of Contents continued on following pages Variable Star Data New Variables Discovered by Data Mining Images Taken During Recent Asteroid Photometric Surveys at the Astronomical Observatory of the University of Siena: Results for the Year 2017 Alessandro Marchini, Riccardo Papini, Fabio Salvaggio, Claudio Arena, Davide Agnetti, Mauro Bachini, Giacomo Succi, Massimo Banfi 174 Visual Times of Maxima for Short Period Pulsating Stars IV Gerard Samolyk 178 Recent Minima of 266 Eclipsing Binary Stars Gerard Samolyk 184 Abstracts of Papers Presented at the Joint Meeting of the British Astronomical Association, Variable Star Section and the American Association of Variable Star Observers (AAVSO 107th Spring Meeting), Held in Warwick, United Kingdom, July 7–8, 2018 The HOYS-CAPS Citizen Science Project Dirk Froebrich 189 Recent Activity of SU
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