Desert Skies Tucson Amateur Astronomy Association Volume LVII, Number 1 January, 2011

Total Page:16

File Type:pdf, Size:1020Kb

Desert Skies Tucson Amateur Astronomy Association Volume LVII, Number 1 January, 2011 Desert Skies Tucson Amateur Astronomy Association Volume LVII, Number 1 January, 2011 Total Lunar Eclipse ♦ Constellation of the month ♦ NEW SPACE EXPLORATION SPECIAL INTEREST ♦ TAAA Astronomy Complex Updates GROUP ♦ Tucson Festival of Books ♦ PLANETARY NEBULAE OF THE MONTH Desert Skies: January, 2011 2 Volume LVII, Number 1 Cover Photo: December’s total lunar eclipse. Imaged by Rik Hill. TAAA Web Page: http://www.tucsonastronomy.org TAAA Phone Number: (520) 792-6414 Office/Position Name Phone E-mail Address President Keith Schlottman 250-1560 [email protected] Vice President Bill Lofquist 297-6653 [email protected] Secretary Luke Scott 749-4867 [email protected] Treasurer Teresa Plymate 883-9113 [email protected] Member-at-Large John Croft [email protected] Member-at-Large John Kalas 620-6502 [email protected] Member-at-Large Michael Turner 743-3437 [email protected] Past President Ken Shaver 762-5094 [email protected] Chief Observer Dr. Mary Turner 743-3437 [email protected] AL Correspondent (ALCor) Paul Anderson 625-5035 [email protected] Community Event Scheduler Mark Meanings 826-2473 [email protected] Volunteer Coordinator Roger Schuelke 404-6724 [email protected] TIMPA Gate Card controller John Kalas 620-6502 [email protected] Chiricahua Astronomy Complex Dir. John Kalas 620-6502 [email protected] Newsletter Editor George Barber [email protected] Web Director Terri Lappin 977-1290 [email protected] Publicist Liz Kalas 620-6502 [email protected] Astro-Imaging SIG Steve Peterson 762-8211 [email protected] Astronomy Fundamentals SIG Robert Gilroy 743-0021 [email protected] Starry Messenger SIG Terri Lappin 977-1290 [email protected] Space Exploration SIG Al Anzaldua 409-5797 [email protected]. Mae Smith 850-7137 Club Apparel Sales [email protected] Merlin Waits 888-4550 Equipment Loan Coordinator Al Dohner 297-7118 [email protected] Librarians Claude & Teresa Plymate 883-9113 [email protected] Grand Canyon Star Party Coordinator Jim O’Connor 546-2961 [email protected] General Information Luke Scott 749-4867 [email protected] Membership in the TAAA must be sent through the TAAA. Do not send money directly to the magazines. To change an individual subscription to the group rate, Annual Fees pay the subscription amount to the TAAA treasurer. Include your Individual membership................................................................. $25.00 magazine renewal notice. Family (includes two adults plus minor children) ....................... $30.00 • Please include a note explaining what you are paying for. Credit Youth under 18 years must join as a family upon parental or guardian acknowledgement of participation in TAAA events. Ask the Treasurer cards are not accepted. Write one check or money order for fees plus for the required form. any options or donations. Make it payable to TAAA and send to: Discounts (one discount allowed, subtract from above rates) Tucson Amateur Astronomy Association Seniors (over 60 years) .................................................................. $2.00 PO BOX 41254 Tucson, AZ 85717 College Students, Teachers (K – 12) .............................................. $8.00 Youth under 18 yrs (form required, contact the treasurer) ....... $13.00 Mailing Address or Email Changes - Send to address above or email the Options (add to above membership rates) treasurer. Tucson society of the Astronomical League (TAL) fees ............ $ 7.50 TAAA Mission Statement - The mission of the Tucson Amateur Astron- Sky & Telescope Magazine 1 year (12 issues) ............................ $32.95 omy Association is to provide opportunities for members and the public Astronomy Magazine 1 year (12 issues) ..................................... $34.00 to share the joy and excitement of astronomy through observing, educa- 2 years (24 issues) ................................... $60.00 tion and fun. Postage for New Member Pack ................................................... $ 4.80 Donations are accepted for the following funds: SA-IDA/Light Pollution, Desert Skies Publishing Guidelines - All articles, announcements, news, TIMPA,Education,TAAA Astronomy Complex,and General/Undesignated. etc. must be submitted by the newsletter deadline. Materials received Renewal Information after that date will appear in the next issue. The editor retains all submis- sions unless prior arrangements are made. Submissions should be sub- • Your membership expires as indicated on your mailing label. mitted in Word compatible files via e-mail or on a recordable media.. All • TAAA members may join the Tucson society of the Astronomical material copyright Tucson Amateur Astronomy Association or specific League (TAL) at the time they join or renew. author. No reproduction without permission, all rights reserved. We will not publish slanderous or libelous material! Send submissions to: • Discounted Sky & Telescope or Astronomy magazine subscriptions George Barber are available to members and can be started or renewed at anytime. TAAA/Desert Skies Editor Rates are given above. Allow 3 months for processing. Subscriptions [email protected] Join our Email Lists on YahooGroups TAAA Forum: http://tinyurl.com/hwoau (general astronomy discussion, posting allowed, 75/month) TAAA Dark Site: http://tinyurl.com/3d8ts9 (discussion of dark site issues, posting allowed) Desert Skies is published monthly by the Tucson Amateur Astronomy Association, Post Office Box 41254, Tucson AZ 85717. Volume LVII, Number 1 3 Desert Skies: January, 2011 President’s Message Happy New Year! As usual, another holiday with an astro- nomical connection - our planet has made another orbit So, next time someone asks you about that bright star, around the Sun. There is so much astronomical activity why not invite them to a star party to have a look, instead right here in our own solar system, that it's easy to take it of just explaining it in dry textbook language? They will all for granted. Did you get to view the lunar eclipse in be much more impressed if you can actually show them December? (As I write this, the eclipse has not happened the cloud belts or red spot on Jupiter, the Straight Wall or yet, so hopefully it was clear). Or perhaps you enjoyed mountains on the lunar surface, the slivery crescent of observing the Geminid meteor shower, which gave us Venus, or even a solar flare on the Sun! There are plenty quite a performance again this year. Some of our TAAA of photons to go around. We also have opportunities to members are active asteroid observers. And of course we learn more about the solar system through the club's can't talk about solar system observing without mention- meetings. In March, you'll have an opportunity to hear ing the king of planets, Jupiter, which is brilliant in our Space Exploration SIG Leader Al Anzaldua talk about the evening skies. Have you had any friends or neighbors ask moons of Jupiter and Saturn, followed by LPL's Ari Spinoza about the "really bright star" that they saw? presenting dramatic images of Mars from the HiRISE mis- sion. For many of us, the solar system was our gateway into astronomy. The moon landings, early planetary space- Be sure to check the newsletter, website, and e-mail forum craft missions, even cereal box prizes and Saturday morn- for announcements about activities that you can partici- ing cartoons gave us glimpses of the mysteries that lay so pate in. There's always something going on! Also, don't close and yet so far. Perhaps the solar system provides forget our current auction. The winning bidder will walk the best telescopic views to grab the attention of non- away with an outstanding telescope on an extremely high astronomers. If you've been to a public star party, you quality mount, and the proceeds are going to a very im- already know that the craters on the moon provide a real portant purpose for the club. Oh, by the way, the tele- thrill to the attendees, and Saturn and Jupiter elicit the scope is a fantastic planetary scope! "Oh Wow!" responses that warm our hearts. As fun as it may be to observe those dim, faint galaxies and nebulae, Keith Schlottman it's the solar system objects that can really hook the new- comer. Meeting Information and Calendar of Events TAAA MEETING DATE: Friday, January 7, at the Stew- centers on supernovae as individual objects and as com- ard Observatory Auditorium – Room N210 ponents in the cosmology of our universe. He has been a part of several collaborative efforts to observe supernovae ASTRONOMY ESSENTIALS: 6:30 pm and has used the Hubble Space Telescope to view nearby Title: Objects of the Season supernovae. Dr. Matheson also studies gamma ray bursts Speaker: Dr. Mary Turner and how they are related to supernovae. Dr. Turner will give her quarterly update on the best ob- BOARD OF DIRECTORS MEETING : Wednesday, Janu- jects for observing during the winter and spring season. ary 12, 6:30 pm. The meeting is held at Steward Observa- tory Conference Room N305. GENERAL MEETING: 7:30 pm Title: How Modern Surveys are Changing Our Understand- STAR PARTIES AND EVENTS: ing of Supernovae 01 Jan - TAAA Star Party at CAC Speaker: Dr. Thomas Matheson, NOAO 03 Jan – Astro-Imaging SIG at China Rose 11 Jan - Dunham Elementary Star Party Supernovae
Recommended publications
  • Seminarvortrag 17.4.2019 Zu Sonnenflecken
    Early telescopic observations of sunspots by Simon Marius and other (1610-1620) Ralph Neuhäuser Astrophysikalisches Institut und Universitäts-Sternwarte www.astro.uni-jena.de FSU Jena 400 years telescopic sunspots. Schwabe cycle 10.4 ± 1.2 yr (since 1750) Schwabe cycle and butterfly diagram Sonnenflecken-Relativzahl (Rudolf Wolf 1816-1893): Rz = k x (10 x g + n) Anzahl der Einzelflecken n, Anzahl der Fleckengruppen g, individueller Gütefaktor des jeweiligen Beobachters k Hoyt & Schatten (1998): Sonnenfleckengruppenzahl RG = (12.08 / N) x Si (ki' x Gi) individueller Korrekturfaktor ki' des i-ten Beobachters Gruppenzahl Gi am betreffenden Tag, N ist die Anzahl der Beobachter des entsprechenden Tages. oder Fleckenfläche statt Fleckenanzahl Active day fraction f = (aktive Tage) / (aktive + inaktive Tage) In 17th century, all sources have to be checked ! Clette et al. 2015 - First telescopic observations of sun spots - Observations by Simon Marius 1611 – 1619 - More observations by Saxonius, Tarde, Malapert: Constraining the first telescopic Schwabe cycle (1620) Erste teleskopische Beobachtungen von Flecken (ab 1609): -Vorstufen als Lesestein um 1000 AD (Ibn al-Haytham) - Linsen, Monokel, Brillen im Mittelalter (China, Italien) - Teleskop 1608 (Hans Lipperdey, Holland) - Galileo Galilei: erste Himmelsbeobachtungen (1609) Jupiter-Monde, Sterne in Milchstraße, Venus-Phasen, Sonnenflecken - Kepler Fernrohr (1611) Kopernikanische Wende: Helio-Zentrismus Erste teleskopische Beobachtungen von Flecken (ab 1609): - Galileo Galilei: erste Himmelsbeobachtungen
    [Show full text]
  • The Maunder Minimum and the Variable Sun-Earth Connection
    The Maunder Minimum and the Variable Sun-Earth Connection (Front illustration: the Sun without spots, July 27, 1954) By Willie Wei-Hock Soon and Steven H. Yaskell To Soon Gim-Chuan, Chua Chiew-See, Pham Than (Lien+Van’s mother) and Ulla and Anna In Memory of Miriam Fuchs (baba Gil’s mother)---W.H.S. In Memory of Andrew Hoff---S.H.Y. To interrupt His Yellow Plan The Sun does not allow Caprices of the Atmosphere – And even when the Snow Heaves Balls of Specks, like Vicious Boy Directly in His Eye – Does not so much as turn His Head Busy with Majesty – ‘Tis His to stimulate the Earth And magnetize the Sea - And bind Astronomy, in place, Yet Any passing by Would deem Ourselves – the busier As the Minutest Bee That rides – emits a Thunder – A Bomb – to justify Emily Dickinson (poem 224. c. 1862) Since people are by nature poorly equipped to register any but short-term changes, it is not surprising that we fail to notice slower changes in either climate or the sun. John A. Eddy, The New Solar Physics (1977-78) Foreword By E. N. Parker In this time of global warming we are impelled by both the anticipated dire consequences and by scientific curiosity to investigate the factors that drive the climate. Climate has fluctuated strongly and abruptly in the past, with ice ages and interglacial warming as the long term extremes. Historical research in the last decades has shown short term climatic transients to be a frequent occurrence, often imposing disastrous hardship on the afflicted human populations.
    [Show full text]
  • Technical Activities 1983 Center for Basic Standards
    Technical Activities 1983 Center for Basic Standards U S. DEPARTMENT OF COMMERCE National Bureau of Standards National Measurement Laboratory Center for Basic Standards Washington, DC 20234 November 1983 Final Issued January 1984 Prepared for: U S. DEPARTMENT OF COMMERCE National Bureau of Standards Qc /ashington, DC 20234 1 00 -USk p p p I p p V i I » i » i i » i [i fi n NBSIR 83-2793 TECHNICAL ACTIVITIES 1983 CENTER FOR BASIC STANDARDS Karl G. Kessler, Director U.S. DEPARTMENT OF COMMERCE National Bureau of Standards National Measurement Laboratory Center for Basic Standards Washington, DC 20234 November 1 983 Final Issued January 1984 Prepared for: U.S. DEPARTMENT OF COMMERCE National Bureau of Standards Washington, DC 20234 U.S. DEPARTMENT OF COMMERCE, Malcolm Baidrige. Secretary NATIONAL BUREAU OF STANDARDS, Ernest Ambler, Director TABLE OF CONTENTS Part II Page Technical Activities: Introduction 1 Quantum Metrology Group 2 Electricity Division 21 Temperature and Pressure Division 81 Length and Mass Division 123 Time and Frequency Division 135 Quantum Physics Division 187 i i I 1 I II II i li 1 1 INTRODUCTION This book is Part II of the 1983 Annual Report of the Center for Basic Standards and contains a summary of the technical activities of the Center for the period October 1, 1982 to September 30, 1983. The Center is one of the five resources and operating units in the National Measurement Laboratory. The summary of activities is organized in six sections, one for the technical activities of the Quantum Metrology Group, and one each for the five divisions of the Center.
    [Show full text]
  • LIST of PUBLICATIONS Aryabhatta Research Institute of Observational Sciences ARIES (An Autonomous Scientific Research Institute
    LIST OF PUBLICATIONS Aryabhatta Research Institute of Observational Sciences ARIES (An Autonomous Scientific Research Institute of Department of Science and Technology, Govt. of India) Manora Peak, Naini Tal - 263 129, India (1955−2020) ABBREVIATIONS AA: Astronomy and Astrophysics AASS: Astronomy and Astrophysics Supplement Series ACTA: Acta Astronomica AJ: Astronomical Journal ANG: Annals de Geophysique Ap. J.: Astrophysical Journal ASP: Astronomical Society of Pacific ASR: Advances in Space Research ASS: Astrophysics and Space Science AE: Atmospheric Environment ASL: Atmospheric Science Letters BA: Baltic Astronomy BAC: Bulletin Astronomical Institute of Czechoslovakia BASI: Bulletin of the Astronomical Society of India BIVS: Bulletin of the Indian Vacuum Society BNIS: Bulletin of National Institute of Sciences CJAA: Chinese Journal of Astronomy and Astrophysics CS: Current Science EPS: Earth Planets Space GRL : Geophysical Research Letters IAU: International Astronomical Union IBVS: Information Bulletin on Variable Stars IJHS: Indian Journal of History of Science IJPAP: Indian Journal of Pure and Applied Physics IJRSP: Indian Journal of Radio and Space Physics INSA: Indian National Science Academy JAA: Journal of Astrophysics and Astronomy JAMC: Journal of Applied Meterology and Climatology JATP: Journal of Atmospheric and Terrestrial Physics JBAA: Journal of British Astronomical Association JCAP: Journal of Cosmology and Astroparticle Physics JESS : Jr. of Earth System Science JGR : Journal of Geophysical Research JIGR: Journal of Indian
    [Show full text]
  • 194 9 Ce Le B Rating 65 Ye Ars O F Br Inging As Tr on Omy T O No Rth Te X As 2
    1949 Celebrating 65 Years of Bringing Astronomy to North Texas 2014 Contact information: Inside this issue: Info Officer (General Info) – [email protected] Website Administrator – [email protected] Page Postal Address: November Club Calendar 3 Fort Worth Astronomical Society Celestial Events 4 c/o Matt McCullar 5801 Trail Lake Drive Sky Chart 5 Fort Worth, TX 76133 Moon Phase Calendar 6 Web Site: http://www.fortworthastro.org Facebook: http://tinyurl.com/3eutb22 Lunar Occultations/Conjs 7 Twitter: http://twitter.com/ftwastro Yahoo! eGroup (members only): http://tinyurl.com/7qu5vkn Mercury/Venus Chart 8 Officers (2014-2015): Mars/Minor Planets Charts 9 President – Bruce Cowles, [email protected] Jupiter Charts 10 Vice President – Russ Boatwright, [email protected] Sec/Tres – Michelle Theisen, [email protected] Planet Vis & ISS Passes 11 Board Members: CSAC Event Update 12 2014-2016 Mike Langohr Young Astronomer News 12 Tree Oppermann ‘66 Leonids Remembered 13 2013-2015 Bill Nichols Cloudy Night Library 15 Jim Craft Cover Photo: Monthly AL Observing Club 17 Composite image taken by FWAS mem- bers: Left to right, from top to bottom— Constellation of the Month 18 Laura Cowles, Mike Ahner, Brian Wortham, Constellation Mythology 19 Shawn Kirchdorfer, Mark Wainright, Phil Stage, Patrick McMahon, Dennis Webb, Ben Prior Club Meeting Minutes 20 Hudgens, Shawn Kirchdorfer, John McCrea, and Chris Mlodnicki General Club Information 21 That’s A Fact 21 Observing Site Reminders: Be careful with fire, mind all local burn bans! Full Moon Name 21 Dark Site Usage Requirements (ALL MEMBERS): FWAS Foto Files 22 Maintain Dark-Sky Etiquette (http://tinyurl.com/75hjajy) Turn out your headlights at the gate! Sign the logbook (in camo-painted storage shed.
    [Show full text]
  • Kepler and the Jesuits, Michael Walter Burke-Gaffney, S.J. (1944).Pdf
    ixNM^KrnrFRi^ mji iiiNir*! CO c >KU\ ic»n \f» v Mftimioriiu'.t n ( < nice r O Mai mi v* Nf amtouvs LHrJUULI m nc. xwii § m m > z a H m3C jftaUISp m en C H theJESU CD BY M.W. BURKE - GAFFNEY ST. IGNATIUS LIBRARY »**,.* ^ » 980 T- PARK AVENUE / »naT,„, oh NEW YORK CITY 28 "«w Vowk Date Loaned ©23 IM ^0*0v&*0v&A&*&*&*&H&*&*&*&K&r&*&*.&>»&*'&*&*,O'*'&*-0*&*&* Kepler and the Jesuits ^^<^W^Jl^X^lt^>C^lC^X^X^K^>t^X^5<^X^X^K^X^X^X^X^X^l<^)t^l<^> "My thoughts are with the Dead; with them 1 live in long-past years, Their virtues love, their faults condemn, Partake their hopes and fears, And from their lessons seek and find Instruction with a humble mind." — SOUTHEY. M. W. BURKE-GAFFNEY, S.J. 'I measured the skies." Johann Kepler THE BRUCE PUBLISHING COMPANY MILWAUKEE Imprimi potest: T. J. Mullai-ly, S.J. Nihil obstat: H. B. Rjes, Censor librorum Imprimatur: + Moyses E. Kiley. Archiepiscopus Milwaukiensis Die 11 Aprilis. 1944 CONTENTS Page Chapte f 1 I Introducing Kepler II The Imperial Mathematician 15 III . 26 IV V . 60 VI Sunspots ..... • 71 VII Mercury in the Sun . 8s 9i WAR FORMAT VIII Heliocentric Hypothesis • This book is produced in complete accord with the Governinem regulations for the conservation of paper and other essential materials. IX X Aids to Astronomy . 117 XI The Last Chapter 129 Bibli Copyright. 1944 The Bruce Publishing Company Indej Printed in the United States of America CHAPTER I INTRODUCING KEPLER Johann Kepler was enjoying a studentship at the University of Tubingen when the Parodies, the Lutheran school at Graz, applied for a teacher of astronomy.
    [Show full text]
  • The Observer, November
    The OBSERVER The Newsletter of the Twin City Amateur Astronomers, Inc. November 2001 Volume 26, Number 11 Adventures in Meteor Hunting — Duane Yockey In This Issue: REETINGS to my brother and and binoculars just in case the meteors sister sky watchers, didn't live up to their billing. Saturday G was clear here in central Illinois, and • Meteor Hunting Adventures ...1 when I got back from a Duane shows that he has the The long awaited day play at Illinois State right stuff as he tears after the of the Leonid meteor University around Leonids and finds them! shower arrived Satur- 10:30 p.m. the sky was day. I was really still showing lots of • TCAA Calendar ........................1 looking forward to stars. I called Laura Use our calendar to mark going out to the (my oldest daughter), your calendar. observatory with who said the skies were other Twin City clear down in southern • TCAA Annual Holiday Bash....3 Amateur Indiana and I could Party like it’s, um, 2001, at Astronomers and see- drive down there, if the Vic & Cindy’s! ............................ ing the "show" from clouds rolled in (ha, 2:00 a.m. to 6:00 a.m. ha). I assured her that • Club Notes................................4 early Sunday morn- the sky would cooper- Wow, it’s been a busy month! ing. So I packed my ate, and it was looking car early with a lawn good then, and I wished • Software Review: DSE ...........5 chair and threw in my her good luck (if she And just think, if you never telescope, star charts turn to page 5, you’ll never know continued on next page what DSE stands for..
    [Show full text]
  • GTO Keypad Manual, V5.001
    ASTRO-PHYSICS GTO KEYPAD Version v5.xxx Please read the manual even if you are familiar with previous keypad versions Flash RAM Updates Keypad Java updates can be accomplished through the Internet. Check our web site www.astro-physics.com/software-updates/ November 11, 2020 ASTRO-PHYSICS KEYPAD MANUAL FOR MACH2GTO Version 5.xxx November 11, 2020 ABOUT THIS MANUAL 4 REQUIREMENTS 5 What Mount Control Box Do I Need? 5 Can I Upgrade My Present Keypad? 5 GTO KEYPAD 6 Layout and Buttons of the Keypad 6 Vacuum Fluorescent Display 6 N-S-E-W Directional Buttons 6 STOP Button 6 <PREV and NEXT> Buttons 7 Number Buttons 7 GOTO Button 7 ± Button 7 MENU / ESC Button 7 RECAL and NEXT> Buttons Pressed Simultaneously 7 ENT Button 7 Retractable Hanger 7 Keypad Protector 8 Keypad Care and Warranty 8 Warranty 8 Keypad Battery for 512K Memory Boards 8 Cleaning Red Keypad Display 8 Temperature Ratings 8 Environmental Recommendation 8 GETTING STARTED – DO THIS AT HOME, IF POSSIBLE 9 Set Up your Mount and Cable Connections 9 Gather Basic Information 9 Enter Your Location, Time and Date 9 Set Up Your Mount in the Field 10 Polar Alignment 10 Mach2GTO Daytime Alignment Routine 10 KEYPAD START UP SEQUENCE FOR NEW SETUPS OR SETUP IN NEW LOCATION 11 Assemble Your Mount 11 Startup Sequence 11 Location 11 Select Existing Location 11 Set Up New Location 11 Date and Time 12 Additional Information 12 KEYPAD START UP SEQUENCE FOR MOUNTS USED AT THE SAME LOCATION WITHOUT A COMPUTER 13 KEYPAD START UP SEQUENCE FOR COMPUTER CONTROLLED MOUNTS 14 1 OBJECTS MENU – HAVE SOME FUN!
    [Show full text]
  • Thursday, December 22Nd Swap Meet & Potluck Get-Together Next First
    Io – December 2011 p.1 IO - December 2011 Issue 2011-12 PO Box 7264 Eugene Astronomical Society Annual Club Dues $25 Springfield, OR 97475 President: Sam Pitts - 688-7330 www.eugeneastro.org Secretary: Jerry Oltion - 343-4758 Additional Board members: EAS is a proud member of: Jacob Strandlien, Tony Dandurand, John Loper. Next Meeting: Thursday, December 22nd Swap Meet & Potluck Get-Together Our December meeting will be a chance to visit and share a potluck dinner with fellow amateur astronomers, plus swap extra gear for new and exciting equipment from somebody else’s stash. Bring some food to share and any astronomy gear you’d like to sell, trade, or give away. We will have on hand some of the gear that was donated to the club this summer, including mirrors, lenses, blanks, telescope parts, and even entire telescopes. Come check out the bargains and visit with your fellow amateur astronomers in a relaxed evening before Christmas. We also encourage people to bring any new gear or projects they would like to show the rest of the club. The meeting is at 7:00 on December 22nd at EWEB’s Community Room, 500 E. 4th in Eugene. Next First Quarter Fridays: December 2nd and 30th Our November star party was clouded out, along with a good deal of the month afterward. If that sounds familiar, that’s because it is: I changed the date in the previous sentence from October to November and left the rest of the sentence intact. Yes, our autumn weather is predictable. Here’s hoping for a lucky break in the weather for our two December star parties.
    [Show full text]
  • Download This Article (Pdf)
    Sigismondi et al., JAAVSO Volume 30, 2001 31 LONG-TERM BEHAVIOR OF MIRA CETI MAXIMA Costantino Sigismondi Department of Astronomy Yale University New Haven, CT 06520-8101 Osservatorio Astronomico di Roma Viale del Parco Mellini 84 00136 Rome, Italy and International Center for Relativistic Astrophysics Physics Department University of Rome “La Sapienza” Piazzale Aldo Moro 5 00185 Rome, Italy Dorrit Hoffleit Department of Astronomy Yale University Riccardo Coccioli Physics Department University of Rome “La Sapienza” Presented at the 90th AAVSO Spring Meeting, May 5, 2001 Abstract We gathered the maxima of Mira Ceti (1596–2000) in order to evaluate the frequency of two consecutive bright apparitions. We did an evaluation of the correlation between two following maxima in order to verify the probability of occurrence of two consecutive bright maxima. Analyzing the maxima of Mira, we found a probability of seeing it brighter than α Ceti once every 21 years. In this case, as in February 1997, Mira can be detected at the first sight as a new component near the most significant asterism in its zone, composed of α, γ, and δ Ceti. We found also a correlation between the magnitude of two consecutive maxima described by the linear fit: 32 Sigismondi et al., JAAVSO Volume 30, 2001 Mi+1 -Mi = - (1.10 ± 0.08) Mi + (3.74 ± 0.26), with R = -0.74. This study was done to test whether Mira could have been the Star of Bethlehem and fulfilled the hypothesis suggested by Kepler of a new star that appeared during the triple conjunction at 1° of Jupiter and Saturn that occurred in 7–6 B.C.E.
    [Show full text]
  • Boceto Revista Astronomica
    El eclipse de Luna del 15 de abril de 2014 - fotografía por Alejandro Blain Año 86 Número 281 Mayo 2014 Asociación Argentina Amigos de la Astronomía Editorial Telescopio Remoto 4 Hace unas semanas estaba de docente con un grupo de estudiantes Artemio Luis Fava en Quiroga y sin internet cuando me llamó Inés (que había vuelto de CASLEO) para contarme la noticia: un grupo de investigadores había Tierra a la vista... 5 detectado el modo B de polarización… lo que confirmaba las predicciones Iván David Castillo de la teoría inflacionaria del Big Bang. Dicho de otro modo ¡el Big Bang está confirmado! Y por primera vez en mucho tiempo sentí que somos MAVEN - NASA 7 polvo de estrellas. María Agostina Gangemi Si bien mi exclamación no es del todo cierta (más que haberse confirmado el Big Bang, se ha ganado seguridad en el modelo y es posible Damas del cielo 11 explicar hasta más atrás en el tiempo), creo que es el hecho científico más María Marta Do Santos importante que haya ocurrido durante mi vida y agradezco a todos los que ayudaron a poder plasmarlo en esta revista. Contamos con un interesante En el CASLEO de campaña 17 artículo del Dr. Bengochea acompañado de una historieta de PHD Inés Simone Comics de los doctores Jorge Cham y Jon Kaufman (perteneciente al grupo de investigación de BICEP2). No dejen de visitar www.phdcomics. Zoología galáctica 19 com , www.caifa.com.ar ni www.facebook.com/ParalajeCientifico Mgter. Ezequiel Koile Más cerca de nosotros, en el planeta rojo, mientras el Curiosity sigue La inflación cósmica 22 caminando en la superficie (un poco rengo y reculando) se le aproximan Dr.
    [Show full text]
  • Seeing the Light: the Art and Science of Astronomy
    Chapter 1 Seeing the Light: The Art and Science of Astronomy In This Chapter ▶ Understanding the observational nature of astronomy ▶ Focusing on astronomy’s language of light ▶ Weighing in on gravity ▶ Recognizing the movements of objects in space tep outside on a clear night and look at the sky. If you’re a city dweller Sor live in a cramped suburb, you see dozens, maybe hundreds, of twin- kling stars. Depending on the time of the month, you may also see a full Moon and up to five of the eight planets that revolve around the Sun. A shooting star or “meteor” may appear overhead. What you actually see is the flash of light from a tiny piece of comet dust streaking through the upper atmosphere. Another pinpoint of light moves slowly and steadily across the sky. Is it a space satellite, such as the Hubble Space Telescope, or just a high-altitude airliner? If you have a pair of binoculars, you may be able to see the difference. Most air- liners have running lights, and their shapes may be perceptible. If you liveCOPYRIGHTED in the country — on the seashore MATERIAL away from resorts and develop- ments, on the plains, or in the mountains far from any floodlit ski slope — you can see thousands of stars. The Milky Way appears as a beautiful pearly swath across the heavens. What you’re seeing is the cumulative glow from millions of faint stars, individually indistinguishable with the naked eye. At a great observation place, such as Cerro Tololo in the Chilean Andes, you can see even more stars.
    [Show full text]