BAV Rundbrief Nr. 2 (2012)
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Meeting Announcement Upcoming Star Parties And
CVAS Executive Committee Pres – Bruce Horrocks Night Sky Network Coordinator – [email protected] Garrett Smith – [email protected] Vice Pres- James Somers Past President – Dell Vance (435) 938-8328 [email protected] [email protected] Treasurer- Janice Bradshaw Public Relations – Lyle Johnson - [email protected] [email protected] Secretary – Wendell Waters (435) 213-9230 Webmaster, Librarian – Tom Westre [email protected] [email protected] Vol. 7 Number 6 February 2020 www.cvas-utahskies.org The President’s Corner Meeting Announcement By Bruce Horrocks – CVAS President Our next meeting will be held on Wed. I don’t know about most of you, but I for February 26th at 7 pm in the Lake Bonneville Room one would be glad to at least see a bit of sun and of the Logan City Library. Our presenter will be clear skies at least once this winter. I believe there Wendell Waters, and his presentation is called was just a couple of nights in the last 2 months that “Charles Messier and the ‘Not-Comet’ Catalogue”. I was able to get out and do some observing and so I The meeting is free and open to the public. am hoping to see some clear skies this spring. I Light refreshments will be served. COME AND have watched all the documentaries I can stand on JOIN US!! Netflix, so I am running out of other nighttime activities to do and I really want to get out and test my new little 72mm telescope. Upcoming Star Parties and CVAS Events We made a change to our club fees at our last meeting and if you happened to have missed We have four STEM Nights coming up in that I will just quickly explain it to you now. -
Variable Star Section Circular
British Astronomical Association Variable Star Section Circular No 77, August 1993 ISSN 0267-9272 Office: Burlington House, Piccadilly, London, W1V 9AG Section Officers Director Tristram Brelstaff, 3 Malvern Court, Addington Road, Reading, Berks, RG1 5PL Tel: 0734-268981 Assistant Director Storm R Dunlop 140 Stocks Lane, East Wittering, Chichester, West Sussex, P020 8NT Tel: 0243-670354 Telex: 9312134138 (SD G) Email: CompuServe:100015,1610 JANET:SDUNLOP@UK. AC. SUSSEX.STARLINK Secretary Melvyn D Taylor, 17 Cross Lane, Wakefield, West Yorks, WF2 8DA Tel: 0924-374651 Chart John Toone, Hillside View, 17 Ashdale Road, Secretary Cressage, Shrewsbury, SY5 6DT Tel: 0952-510794 Nova/Supernova Guy M Hurst, 16 Westminster Close, Kempshott Rise, Secretary Basingstoke, Hants, RG22 4PP Tel & Fax: 0256-471074 Telex: 9312111261 (TA G) Email: Telecom Gold:10074:MIK2885 STARLINK:RLSAC::GMH JANET:GMH0UK. AC. RUTHERFORD.STARLINK. ASTROPHYSICS Pro-Am Liaison Roger D Pickard, 28 Appletons, Hadlow, Kent, TN11 0DT Committee Tel: 0732-850663 Secretary Email: JANET:RDP0UK.AC.UKC.STAR STARLINK:KENVAD: :RDP Computer Dave McAdam, 33 Wrekin View, Madeley, Telford, Secretary Shropshire, TF7 5HZ Tel: 0952-432048 Email: Telecom Gold 10087:YQQ587 Eclipsing Binary Director Secretary Circulars Editor Director Circulars Assistant Director Subscriptions Telephone Alert Numbers Nova and Supernova First phone Nova/Supernova Secretary. If only Discoveries answering machine response then try the following: Denis Buczynski 0524-68530 Glyn Marsh 0772-690502 Martin Mobberley 0245-475297 (weekdays) 0284-828431 (weekends) Variable Star Gary Poyner 021-3504312 Alerts Email: JANET:[email protected] STARLINK:BHVAD::GP For subscription rates and charges for charts and other publications see inside back cover Forthcoming Variable Star Meeting in Cambridge Jonathan Shanklin says that the Cambridge University Astronomical Society is planning a one-day meeting on the subject of variable stars to be held in Cambridge on Saturday, 19th February 1994. -
Exoplanet Community Report
JPL Publication 09‐3 Exoplanet Community Report Edited by: P. R. Lawson, W. A. Traub and S. C. Unwin National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California March 2009 The work described in this publication was performed at a number of organizations, including the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA). Publication was provided by the Jet Propulsion Laboratory. Compiling and publication support was provided by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government, or the Jet Propulsion Laboratory, California Institute of Technology. © 2009. All rights reserved. The exoplanet community’s top priority is that a line of probeclass missions for exoplanets be established, leading to a flagship mission at the earliest opportunity. iii Contents 1 EXECUTIVE SUMMARY.................................................................................................................. 1 1.1 INTRODUCTION...............................................................................................................................................1 1.2 EXOPLANET FORUM 2008: THE PROCESS OF CONSENSUS BEGINS.....................................................2 -
Patrick Moore's Practical Astronomy Series
Patrick Moore’s Practical Astronomy Series Other Titles in this Series Navigating the Night Sky Astronomy of the Milky Way How to Identify the Stars and The Observer’s Guide to the Constellations Southern/Northern Sky Parts 1 and 2 Guilherme de Almeida hardcover set Observing and Measuring Visual Mike Inglis Double Stars Astronomy of the Milky Way Bob Argyle (Ed.) Part 1: Observer’s Guide to the Observing Meteors, Comets, Supernovae Northern Sky and other transient Phenomena Mike Inglis Neil Bone Astronomy of the Milky Way Human Vision and The Night Sky Part 2: Observer’s Guide to the How to Improve Your Observing Skills Southern Sky Michael P. Borgia Mike Inglis How to Photograph the Moon and Planets Observing Comets with Your Digital Camera Nick James and Gerald North Tony Buick Telescopes and Techniques Practical Astrophotography An Introduction to Practical Astronomy Jeffrey R. Charles Chris Kitchin Pattern Asterisms Seeing Stars A New Way to Chart the Stars The Night Sky Through Small Telescopes John Chiravalle Chris Kitchin and Robert W. Forrest Deep Sky Observing Photo-guide to the Constellations The Astronomical Tourist A Self-Teaching Guide to Finding Your Steve R. Coe Way Around the Heavens Chris Kitchin Visual Astronomy in the Suburbs A Guide to Spectacular Viewing Solar Observing Techniques Antony Cooke Chris Kitchin Visual Astronomy Under Dark Skies How to Observe the Sun Safely A New Approach to Observing Deep Space Lee Macdonald Antony Cooke The Sun in Eclipse Real Astronomy with Small Telescopes Sir Patrick Moore and Michael Maunder Step-by-Step Activities for Discovery Transit Michael K. -
The CORALIE Survey for Southern Extrasolar Planets XVII
Astronomy & Astrophysics manuscript no. coralieXVII c ESO 2019 July 1, 2019 The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets ? ?? M. Marmier1, D. Segransan´ 1, S. Udry1, M. Mayor1, F. Pepe1, D. Queloz1, C. Lovis1, D. Naef1, N.C. Santos2;3;1, R. Alonso4;5;1, S. Alves8;1, S. Berthet1, B. Chazelas1, B-O. Demory9;1, X. Dumusque1, A. Eggenberger1, P. Figueira2;1, M. Gillon6;1, J. Hagelberg1, M. Lendl1, R. A. Mardling7;1, D. Megevand´ 1, M. Neveu1, J. Sahlmann1, D. Sosnowska1, M. Tewes10, and A. H.M.J. Triaud1 1 Observatoire astronomique de l’Universite´ de Geneve,` 51 ch. des Maillettes - Sauverny -, CH-1290 Versoix, Switzerland 2 Centro de Astrof´ısica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal 3 Departamento de F´ısica e Astronomia, Faculdade de Ciencias,ˆ Universidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal 4 Instituto de Astrof´ısica de Canarias, C/ V´ıa Lactea´ S/N, E-38200 La Laguna, Spain 5 Departamento de Astrof´ısica, Universidad de La Laguna, E-38205 La Laguna, Spain 6 Universite´ de Liege,` Allee´ du 6 aoutˆ 17, Sart Tilman, Liege` 1, Belgium 7 School of Mathematical Sciences, Monash University, Victoria, 3800, Australia 8 Departamento de F´ısica, Universidade Federal do Rio Grande do Norte, 59072-970, Natal, RN., Brazil 9 Department of Earth, Atmospheric and Planetary Sciences, Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA 10 Laboratoire d’astrophysique, Ecole Polytechnique Fed´ erale´ de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland Received month day, year; accepted month day, year ABSTRACT Context. -
Manali Kallat Vainu Bappu
MANALI KALLAT VAINU BAPPU Elected Fellow 1968 MANALIKALLAT VAINU BAPPUwas born on August 10, 1927 in Madras. Mrs Surlanna Bappu, his mother, who hailed from Tellichery, had lost her own mother at an early age. She was 'brought up by her maternal aunt, Mrs Govindan. It was at her place, in Vepery, Madras, that Vainu was born. Vainu Bappu's ancestors hailed from Cannano re. His grandfather was the noted Malayalam author, Bappu Gurikkal; several members of his family had left their ancestral home and settled in Mangalore and nearby places. Vainu's father Manali Kakuzhi Bappu, had joined Nizanliah Observatory and settleb down in Begumpet, Hyderabad. He got married to Sunanna in 1925 ; Vainu, their only child, was born two years later. Vainu.'~early years were spent in Hyderabad. He first joined St. Anne's Convent and later Islamiah High School, Hyderabad. His gift of oratory and writing from a very early age evoked widespread admiration among his teachers. , Vainu apparently inherited this quality from his parents. His mother's elder brother, Rao Bahadur U Shankunny was a famous litterateur and orator ; another brother U Balakrishnan, a headmaster, was known for years to have cultivated'the love of reading in his students. This special qualitykf Vainu -was also fostered by his teacher in Hyderabad, Mr P G P Nair, who encouraged him to take a leading role in the debating and literary activities of the school. Vainu Bappu joined Nizam's College in 1942. He was then below the age limit for admission to the college and a special exemption had to be sought. -
Astronomical Coordinate Systems
Appendix 1 Astronomical Coordinate Systems A basic requirement for studying the heavens is being able to determine where in the sky things are located. To specify sky positions, astronomers have developed several coordinate systems. Each sys- tem uses a coordinate grid projected on the celestial sphere, which is similar to the geographic coor- dinate system used on the surface of the Earth. The coordinate systems differ only in their choice of the fundamental plane, which divides the sky into two equal hemispheres along a great circle (the fundamental plane of the geographic system is the Earth’s equator). Each coordinate system is named for its choice of fundamental plane. The Equatorial Coordinate System The equatorial coordinate system is probably the most widely used celestial coordinate system. It is also the most closely related to the geographic coordinate system because they use the same funda- mental plane and poles. The projection of the Earth’s equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles onto the celestial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate sys- tems: the geographic system is fixed to the Earth and rotates as the Earth does. The Equatorial system is fixed to the stars, so it appears to rotate across the sky with the stars, but it’s really the Earth rotating under the fixed sky. The latitudinal (latitude-like) angle of the equatorial system is called declination (Dec. for short). It measures the angle of an object above or below the celestial equator. -
BAV Rundbrief Nr. 1 (2012)
BAV Rundbrief 61. Jahrgang Nr. 1 (2012) ISSN 0405-5497 D. Bannuscher Liebe BAVer 1 N. Reichmann Lichtkurve des EA-Veränderlichen RZ Cas 2 S. Hümmerich / OGLEII BUL-SC33 V4375 und MACHO 176.19087.17: Zwei neue K. Bernhard bedeckungsveränderliche RS-CVn-Sterne 7 S. Hümmerich Datamining in der OGLE-Datenbank - erste Versuche, erste Erfolge 10 W. Vollmann, W. Braune Beobachtung des Minimums von Zeta Aurigae Oktober - Dezember 2011 16 E. Pollmann / Hα-Emission und V-Korrelation als Sonden von Be-Sternscheiben 20 W. Vollmann / F. Puskás L. Pagel Beobachtung von V377 Aurigae 28 G. Srdoc, K. Bernhard GSC 01563-03262 und GSC 02626-00896: Zwei neue RR-Lyrae- Sterne aus der SuperWasp Datenbank 29 H. Diederich EX Hydrae - ein etwas sonderbarer Indermediärer Polar (IP) Teil 1 31 K. Wenzel TW Vul - ein vergessener unbekannter Heidelberger Veränderlicher 38 H. Diederich AM Canum Venaticorum - ein Doppelstern mit ultrakurzer Umlauf- periode 41 P. Lehmann R Corona Borealis 49 J. Neumann V407 Cygni 51 G. Maintz Der Blahzko-Effekt der RR-Lyrae-Sterne 52 Aus der Literatur W. Grimm Aus den IBVS 56 Aus der BAV J. Hübscher Aus der BAV Geschäftsführung 58 L. Pagel BAV-Veränderlichenbeobachter-Treffen am 5. Mai 2012 in Hartha 59 T. Lange Einzelbeobachtungsübersicht 2011 60 A. Oertlin Umsetzung eines Remoteteleskops 61 J. Hambsch AAVSO Jahrestreffen zum 100 jährigen Bestehen 64 Aus den Sektionen F. Walter Bedeckungsveränderliche: Epsilon Aurigae 67 Änderungen der BAV-Programm Bedeckungsveränderliche 68 F. Vohla Mirasterne: Neues zu vernachlässigten Mirasternen 69 T. Lange Kataklysmische: Aktivitäten zwischen Nov. 2011 und Januar 2012 72 J. Hübscher Auswertung: BAV Mitteilungen und aktueller Beobachtungseingang 74 C. -
SIAC Newsletter April 2015
April 2015 The Sidereal Times Southeastern Iowa Astronomy Club A Member Society of the Astronomical League Club Officers: Minutes March 19, 2015 Executive Committee President Jim Hilkin Vice President Libby published, Bill seconded, ship. Payment can be Vice President Libby Snipes Treasurer Vicki Philabaum Snipes called the meeng and the moon passed. made at a club meeng Secretary David Philabaum Chief Observer David Philabaum to order at 6:33 pm with Vicki gave the Treasurer's or by mailing them to PO Members-at-Large Claus Benninghoven the following members in report stang that the Box 14, West Burlington, Duane Gerling Blake Stumpf aendance: Carl Snipes , current balance in the IA 52655. John moved to Board of Directors Paul Sly, Chuck Block, checking account is approve the Treasurer's Chair Judy Hilkin Vice Chair Ray Reineke Claus Benninghoven, $1,914.04. She also stat- report, seconded by Secretary David Philabaum Members-at-Large Duane Gerling, Bill Stew- ed that she will be send- Chuck, and the moon Frank Libe Blake Stumpf art, Ray Reineke, John ing out noces reminding passed. Dave reported Jim Wilt Toney, and Dave & Vicki people when it is me to that the only groups on Audit Committee Dean Moberg (2012) Philabaum. Lavon Worley renew their member- the schedule at this me JT Stumpf (2013) John Toney (2014) from the conservaon ships. Dues remain $20 are the county Dark Newsletter board was also in aend- per year for a single Wings camps this sum- Karen Johnson ance. John moved to ap- membership and $30 per mer. Libby reported that -
16 New Variable Stars in Harvard Map, Nos. 4 and 13
39 4275 40 Beobachtungstag I O-G.aila 1' ;I 'ti: I GroBe I Luft IBeob.1 Bemerk. Beobachtungstag 1 15 I 'ti:' 1 GroDe I Luft I Beob.1 Bemerk. TT Cygni. V Cygni. 1906 Juli 31 IOhI1" 3 2-3 cz r906 Sept. 15, Okt. 12 Y unsichtbar. Cz Aug. 15 I0 17 2 2-3 B 23 I1 I0 3 2 B T Aquarii. Sept. 27 9 22 3 3-4 B 1906 Aug. 18 T unsichtbar. Cz Okt. 9 91 2 1-2 B B I0 8 41 2 2-3 B R Vulpeculae. D 11 8 31 2 2-3 B r906 Aug. 18 110~23~12 I a I 8.48 3-4 I cz (I B I2 942 2-3 B Okt. 4, I 7 R unsichtbar ; Nov. -I I R unmebbar schwach. Nov. 11 I 50 2 2-3 B 3, Nov. 21 I 5 42 121 a I 9.01 2-3 I cz I '5 682 2 B 8> a = +23O4224. B 20 5 41 2 2-3 B B 21 6 25 2 2 B Mond T Cephei. = +32O3531, b = +32"3526, c = +31"3717. a 1906 Juli 31 10 35 1.44 2-3 CZ ") l) Heller Mond. *) Unruhige Bilder. a) Luft undurchsichtig. Aug. 23 11 30 2 a, b 8.40 x Cygni. ' 30 I 9 58 1.1:2 18.301 x I ; I Nov. 11, 15, 20 T unmelbbar schwach. Cz 1906 Juli 24, Sept. 27, Okt. 12, Nov. 11 x unmebbar schwach. .Cz a = +67°1288, b = +67O1299. -
Newsletter 2019-4 October 2019
Newsletter 2019-4 October 2019 www.variablestarssouth.org NGC 55 photobombs Mark Blackford’s study of the EW binary UY Sculptor. See page 7 for the story. Contents From the director - Mark Blackford ......................................................................................................................................................2 Sixth Variable Stars South Symposium – Mark Blackford ................................................................................3 Positions for SMC Novae 1897-1952 – Mati Morel .....................................................................................................4 As photo bombs go this one’s a beauty – Mark Blackford ..............................................................................7 The ZWO ASI 1600 MM-Cool camera – Roy Axelsen ............................................................................................8 The inconstant eclipsing binary BO Indus – Mark Blackford .....................................................................12 VW Hydri is still worth observing – Stan Walker ..........................................................................................................15 Short period pulsators at AAVSO – Alan Baldwin ......................................................................................................20 Publication watch .......................................................................................................................................................................................................21 -
Download a Sample Issue
ASTRONOMERS FROM ANTIQUITY PPAGEage 164 MARCH/APRIL 2019 $5 Probing for Planets Space agencies prepare next generation of exoplanet hunters THE UNIVERSITY OF TEXAS AT AUSTIN Mc DONALD OBSERVATORY STARDATE STAFF MARCH/APRIL • Vol. 47, No. 2 EXECUTIVE EDITOR Damond Benningfield EDITOR Rebecca Johnson ART DIRECTOR C.J. Duncan EATURES EPARtmENts TECHNICAL EDITOR F D Dr. Tom Barnes CONTRIBUTING EDITOR Alan MacRobert 4 Poets, Philosophers, Queens, Astronomers MERLIN 3 MARKETING MANAGER Casey Walker Early women astronomers drafted MARKETING ASSISTANT calendars, plotted eclipses, built SKY CALENDAR MARCH/APRIL 10 Joanne Duffy observatories, and helped shape humanity’s early understanding of the THE STARS IN MARCH/APRIL 12 universe For information about StarDate or other programs of the McDonald Observatory By Jasmin Fox-Skelly Education and Outreach Office, contact ASTROMISCELLANY 14 us at 512-471-5285. For subscription orders only, call 800-STARDATE. 16 Kepler Passes the Torch ASTRONEWS 20 StarDate (ISSN 0889-3098) is published As a successful planet-hunting bimonthly by the McDonald Observatory Resetting the Clock on Saturn’s Rings Education and Outreach Office, The Uni- spacecraft came to the end of its mission, versity of Texas at Austin, 2515 Speedway, Chasing Away Planet Nine Stop C1402, Austin, TX 78712. © 2019 a successor took flight. Several others are The University of Texas at Austin. Annual expected to follow in the next decade Chillin’ Under the Sun subscription rate is $26 in the United States. Subscriptions may be paid for using By Rebecca Johnson Birth of a Black Hole, or Death by Black Hole? credit card or money orders. The University of Texas cannot accept checks drawn on Gaia Spies Galaxy-Hopping Stars foreign banks.