DOCSLIB.ORG

Vol. 73, No. 2 MARCH 2021

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Vol. 73, No. 2 MARCH 2021 Published by the Astronomical League Vol. 73, No. 2 MARCH 2021 CELEBRITY VARIABLE STARS IMAGING TECHNIQUES EXPLAINED 75th WILLIAMINA FLEMING SIMPLE CITIZEN SOLAR SCIENCE Contents AN EMPLOYEE-OWNED COMPANY NEW FREE SHIPPING on order of $75 or more INSTALLMENT BILLING on orders over $350 PAGE 10 & . PRODUCTS Standard Shipping. Some exclusions apply. Exclusions apply. 4 To the Editor 4 . Star Beams (from the President) 5 . International Dark-Sky Association 5 . Night Sky Network 7 . Full STEAM Ahead Orion® StarShoot™ Mini 6.3mp 7 . Wanderers in the Neighborhood Imaging Cameras (sold separately) Orion® StarShoot™ G26 APS-C Orion® GiantView™ BT-100 ED Orion® EON 115mm ED Triplet Awesome Autoguider Pro Refractor PAGE 20 Color #51883 $400 Color Imaging Camera 90-degree Binocular Telescope Apochromatic Refractor Telescope Telescope Package 10 . Deep-Sky Objects Mono #51884 $430 #51458 $1,800 #51878 $2,600 #10285 $1,500 #20716 $600 12 . From Around the League Trust 2019 14 . 12 Celebrity Variable Stars Proven reputation for Orion® U-Mount . innovation, dependability and and Paragon Plus 16 Creating the “Phase-Stacked” Moon service… for over 45 years! XHD Package . #22115 $600 18 Combining Broadband and PAGE 22 Superior Value Orion® StarShoot™ Deep Space Narrowband Imagery High quality products at Orion® StarShoot™ G21 Deep Space Imaging Cameras (sold separately) Orion® 120mm Guide Scope Rings affordable prices Color Imaging Camera G10 Color #51452 $1,200 with Dual-Width Clamps 20 . The Big Bang: Space Science #54290 $950 G16 Mono #51457 $1,300 #5442 $130 Wide Selection Education for the Next Generation Extensive assortment of 22 . Williamina Fleming — award winning Orion brand 2019 products and solutions A Pioneering Woman in Astronomy Customer Support 24 . A Funny Thing Happened in Solar Orion products are also Physics (and a New Opportunity available through select Orion® MagneticDobsonian for Backyard Observers) authorized dealers able to Counterweights offer professional advice and Orion® Premium Linear Orion® EON 130mm ED Triplet Orion® 2x54 Ultra Wide Angle 1-Pound #7006 $25 Binoculars post-purchase support BinoViewer for Telescopes Apochromatic Refractor Telescope 26 . Gallery 3-Pound #7009 $50 #52054 $500 #10286 $2,500 #51007 $150 30 . Observing Awards 2019 Bernard Miller (East Valley Astronomy Club) took this fantastic image of IC 434 with a PlaneWave 17-inch corrected Dall-Kirkham telescope MAY 15 & Orion® Truss Tube Ritchey-Chretien Orion® GiantView 45-degree Binocular Orion® StarShoot™ P1 Polar and a FLI ProLine 16803 CCD camera from Astrographs (sold separately) Alignment Camera with Atlas™/ Orion® 15mm Ultra Telescopes (sold separately) OCTOBER 9 10" #51874 $2,800 Pro/SVP Adapter Orion® 8x33 WP Binocular Flat Field Eyepiece BT-70 #51876 $1,300 Dark Sky New Mexico in Animas. 12" #51875 $4,000 #20098 $300 #51695 $100 #8515 $130 BT-82 #51877 $1,500 2021 DEADLINE to enter Astronomy Day Award The Astronomical League Magazine June 13, 2021 Vol. 73, No. 2 • ISSN: 0034-2963 • MARCH 2021 Orion® f/12 Classical Cassegrain For entry forms: Orion® 80mm ED Semi-Apo Orion® 8-24mm Pro Orion® EON 110mm ED f/6.0 Telescopes (sold separately) A FEDERATION OF ASTRONOMICAL SOCIETIES Apochromatic Refractor Telescope www.astroleague.org Binocular Spotting Scope Orion® U-Mount Lanthanum Zoom Eyepiece CC6 6" #52138 $550 A NON-PROFIT ORGANIZATION #40910 $1,250 #51865 $500 #52056 $200 #10031 $1,300 CC8 8" #52139 $1,000 click on “Astronomy Day” To promote the science of astronomy scroll down to “Astronomy • by fostering astronomical education, Day Award Application” OrionTelescopes.com • by providing incentives for astronomical Sales reps are available Retail prices shown are current as observation and research, and For additional information, by Live Chat of 12/22/20 from Orion. Prices are • by assisting communication among amateur contact Gary Tomlinson M-F 6 am - 5 pm PT, subject to change without notice. Saturday 8 am - 2 pm PT Please check OrionTelescopes.com astronomical societies. Astronomy Day Coordinator Orion® Monster Mount Orion® Dynamo™ Pro 155Wh AC/ Orion® StarShoot 2" Filter Wheel for the most current pricing. Dealer Astronomical League National Office: [email protected] and LRGB Filter Set Package (800)447-1001 pricing and/or promotions may vary. & 25x100 Binocular Kit DC/USB Lithium Power Supply 9201 Ward Parkway, Suite 100, Kansas City, MO 64114 #21186 $900 #2309 $180 #20186 $630 2 REFLECTOR ✶ SEPTEMBER 2020 that I read with great interest was one by Dr. Dire, revamp to the program. More details will follow meeting was virtual but with important twists. darksky.org. You can watch all the presentations To the Editor “Globular Cluster Meets Gas Giant Planets.” I was soon. First, it was free to anyone who wanted to register at your leisure, just as if you had attended the fascinated to learn about the different types of INCREASED ONLINE PRESENCE for it and attend whatever session piqued their conference. It is too late to virtually raise your clusters. There was a lot of valuable information During the past few months, the League has interest. hand to ask a question at the conference, but I QUARTERLY PUBLICATION OF THE ASTRONOMICAL LEAGUE eading vol. 73, no. 1, of the Reflector, I am in Dr. Dire’s article and I was motivated to do my greatly increased its online reach with our joint Second, it was a true global meeting with am sure the presenters would be receptive to fol- Issued by the Astronomical League in March, June, September, and so satisfied and enthralled reading “My own research. efforts with Explore Scientific and its online speakers from around the world. Moreover, the low-up correspondence from anyone who watched December, Reflector (ISSN: 0034-2963) is sent directly, either by R postal mail or via a digital link, to each individual member of its Herschel Objects Project Is Complete.” I’m retired All your contributors should be congratulated programs. These activities will continue and scheduled times for talks and breakout sessions their presentations. affiliate societies and to members-at-large as a benefit of League membership. Individual copies of Reflector are available at the now (secondary and higher science education) as they put together a good product. Keep up the possibly expand in 2021, and I encourage you were purposely scattered around the clock for I was going to briefly highlight some of the following subscription rates, payable to the League’s national office. and still have the need for understanding the good work. to access Facebook to view these special events. convenient daytime attendance for some of featured presentations and sessions, but then I PAPER SUBSCRIPTIONS: developing history as well as cutting-edge —Rodney R. Nordstrom, Ph.D. Please check the League’s Facebook page to see the sessions no matter where the attendee was thought better of it. No doubt I would overlook USA & possessions: $3.00 each or $10.00 per year (4 issues) Canada: $5.00 each or $16.00 per year astronomy. This is a valuable product by the the upcoming schedule. Also, What’s Up With the located – North America, South America, Central something important and do a poor job in the Mexico: $6.00 each or $22.00 per year Other countries: $7.00 each or $25.00 per year Astronomical League. Astronomical League, a sporadic publication sent America, Europe, Central Asia, Southeast Asia, process. The best I can do is inform you about DIGITAL SUBSCRIPTIONS: —Lawrence Blanchard to League members for whom we have an email Australia, New Zealand, and Pacific Islands. Except the conference and urge you to view the presen- All countries, possessions, and territories: $10.00 per year Pontchartrain Astronomical Society Star Beams address on file, is used to communicate upcoming for the wonderful keynote address by Annette tations on the IDA website. REFLECTOR AND CLUB ROSTER DEADLINES events and share other brief time-sensitive news Lee, all major talks and breakout sessions were —Tim Hunter March issue January 1 June issue April 1 ur senior astronomy club (Moonstruck y the time you read this edition of the in between Reflector issues. from speakers outside the United States. This Co-founder, IDA September issue July 1 Astronomy Club, On Top of the World, Reflector, hopefully the coronavirus pan- Our feedback indicates that, in many cases, broadened the scope of the conference and lent December issue October 1 O B Written and graphic material from this publication may be reprinted only Ocala, Florida), met for a fantastic viewing ses- demic will have begun receding in a meaningful societies that are conducting online events during an international flavor to an organization that for non-profit benefit of interested parties, provided specific credit is given to the writer(s), Reflector, and the Astronomical League. Any other use of sion of the Jupiter/Saturn conjunction. The crowd way, with more people able to get vaccinated. In this pandemic have greater participation than purports to be international but is U.S.-centric material, including graphics and photographs, is subject to express Night Sky Network permission from the Editor and the Astronomical League. of over 60 seniors gathered to witness the once- the meantime, despite the pandemic, a core group when they were holding all of their meetings and because of historical and practical considerations. in-a-lifetime event. Face masks were worn, social of observers are still out observing and earning events in person. Moving forward, hopefully we To quote from the IDA website, “the organi- NATIONAL OFFICERS distancing was observed, and members were ad- certificates. will all avail ourselves of the opportunity to bene- zation’s annual meeting became a virtual global ASTRONOMY OUTREACH President Carroll Iorg vised to bring any type of visual aid for personal NEW AL IMAGING AWARD fit from online events, when it makes sense, even meeting.
Load more

Recommended publications
  • III. the Young Open Cluster NGC 1893 in the HII Region W8
    MNRAS 443, 454–473 (2014) doi:10.1093/mnras/stu1170 Sejong Open Cluster Survey (SOS) – III. The young open cluster NGC 1893 in the H II region W8 Beomdu Lim,1,2‹† Hwankyung Sung,2‹ Jinyoung S. Kim,3 Michael S. Bessell4 and Byeong-Gon Park1 1Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 305-348, Korea 2Department of Astronomy and Space Science, Sejong University, 209 Neungdong-Ro, Gwangjin-gu, Seoul 143-747, Korea 3Steward Observatory, University of Arizona, 933 N. Cherry Ave. Tucson, AZ 85721-0065, USA 4Research School of Astronomy and Astrophysics, Australian National University, MSO, Cotter Road, Weston, ACT 2611, Australia Downloaded from Accepted 2014 June 11. Received 2014 June 10; in original form 2014 March 31 ABSTRACT http://mnras.oxfordjournals.org/ We present a UBVI and Hα photometric study of the young open cluster NGC 1893 in the H II region W8 (IC 410 or Sh 2-236). A total of 65 early-type members are selected from photometric diagrams. A mean reddening of the stars is E(B − V)=0.563 ± 0.083 mag. The published photometric data in the near- and mid-infrared passbands are used to test the reddening law towards the cluster, and we confirm that the reddening law is normal (RV = 3.1). Zero-age main-sequence fitting gives a distance modulus of V0 − MV = 12.7 ± 0.2 mag, equivalent to 3.5 ± 0.3 kpc. From Hα photometry, 125 Hα emission stars and candidates are identified as pre-main-sequence (PMS). The lists of young stellar objects and X-ray sources published by previous studies allow us to select a large number of PMS members down to at The Australian National University on September 16, 2014 1M.
    [Show full text]
  • Mathématiques Et Espace
    Atelier disciplinaire AD 5 Mathématiques et Espace Anne-Cécile DHERS, Education Nationale (mathématiques) Peggy THILLET, Education Nationale (mathématiques) Yann BARSAMIAN, Education Nationale (mathématiques) Olivier BONNETON, Sciences - U (mathématiques) Cahier d'activités Activité 1 : L'HORIZON TERRESTRE ET SPATIAL Activité 2 : DENOMBREMENT D'ETOILES DANS LE CIEL ET L'UNIVERS Activité 3 : D'HIPPARCOS A BENFORD Activité 4 : OBSERVATION STATISTIQUE DES CRATERES LUNAIRES Activité 5 : DIAMETRE DES CRATERES D'IMPACT Activité 6 : LOI DE TITIUS-BODE Activité 7 : MODELISER UNE CONSTELLATION EN 3D Crédits photo : NASA / CNES L'HORIZON TERRESTRE ET SPATIAL (3 ème / 2 nde ) __________________________________________________ OBJECTIF : Détermination de la ligne d'horizon à une altitude donnée. COMPETENCES : ● Utilisation du théorème de Pythagore ● Utilisation de Google Earth pour évaluer des distances à vol d'oiseau ● Recherche personnelle de données REALISATION : Il s'agit ici de mettre en application le théorème de Pythagore mais avec une vision terrestre dans un premier temps suite à un questionnement de l'élève puis dans un second temps de réutiliser la même démarche dans le cadre spatial de la visibilité d'un satellite. Fiche élève ____________________________________________________________________________ 1. Victor Hugo a écrit dans Les Châtiments : "Les horizons aux horizons succèdent […] : on avance toujours, on n’arrive jamais ". Face à la mer, vous voyez l'horizon à perte de vue. Mais "est-ce loin, l'horizon ?". D'après toi, jusqu'à quelle distance peux-tu voir si le temps est clair ? Réponse 1 : " Sans instrument, je peux voir jusqu'à .................. km " Réponse 2 : " Avec une paire de jumelles, je peux voir jusqu'à ............... km " 2. Nous allons maintenant calculer à l'aide du théorème de Pythagore la ligne d'horizon pour une hauteur H donnée.
    [Show full text]
  • Explore the Universe Observing Certificate Second Edition
    RASC Observing Committee Explore the Universe Observing Certificate Second Edition Explore the Universe Observing Certificate Welcome to the Explore the Universe Observing Certificate Program. This program is designed to provide the observer with a well-rounded introduction to the night sky visible from North America. Using this observing program is an excellent way to gain knowledge and experience in astronomy. Experienced observers find that a planned observing session results in a more satisfying and interesting experience. This program will help introduce you to amateur astronomy and prepare you for other more challenging certificate programs such as the Messier and Finest NGC. The program covers the full range of astronomical objects. Here is a summary: Observing Objective Requirement Available Constellations and Bright Stars 12 24 The Moon 16 32 Solar System 5 10 Deep Sky Objects 12 24 Double Stars 10 20 Total 55 110 In each category a choice of objects is provided so that you can begin the certificate at any time of the year. In order to receive your certificate you need to observe a total of 55 of the 110 objects available. Here is a summary of some of the abbreviations used in this program Instrument V – Visual (unaided eye) B – Binocular T – Telescope V/B - Visual/Binocular B/T - Binocular/Telescope Season Season when the object can be best seen in the evening sky between dusk. and midnight. Objects may also be seen in other seasons. Description Brief description of the target object, its common name and other details. Cons Constellation where object can be found (if applicable) BOG Ref Refers to corresponding references in the RASC’s The Beginner’s Observing Guide highlighting this object.
    [Show full text]
  • Vssc163 Draftv3 IBVS 2 Colour Correct Graph.Pmd
    British Astronomical Association VARIABLE STAR SECTION CIRCULAR No 163, March 2015 Contents IBVS 6080 – 6109 - J. Simpson ............................................... inside front cover From the Director - R. Pickard ........................................................................... 3 Polar V1432 Aquilae - Editor’s Note .................................................................. 4 Eclipsing Binary News - D. Loughney .............................................................. 4 Update on the Campaign to Observe the Dwarf Nova CSS 121005:212625+201948 - J. Shears ............... 6 How Variable Stars get Their Names - D. Griffin .............................................. 9 References to Naming of Variable Stars - D. Griffin ........................................ 11 The Discovery of Three New Variable Stars using the Bradford Robotic Telescope and the Software Package Muniwin - D. Conner .................. 12 FY Librae - a First Look at the Behaviour during 2014 - P. Williams .............. 16 FY Librae goes Active and Reaffirms the Howarth and Bailey Formula - J. Toone .............. 18 Refining the Period of V505 Scuti - I. Miller ................................................... 21 Binocular Programme - M. Taylor ................................................................... 21 Eclipsing Binary Predictions – Where to Find Them - D. Loughney .............. 22 Charges for Section Publications .............................................. inside back cover Guidelines for Contributing to the Circular .............................
    [Show full text]
  • Winter Constellations
    Winter Constellations *Orion *Canis Major *Monoceros *Canis Minor *Gemini *Auriga *Taurus *Eradinus *Lepus *Monoceros *Cancer *Lynx *Ursa Major *Ursa Minor *Draco *Camelopardalis *Cassiopeia *Cepheus *Andromeda *Perseus *Lacerta *Pegasus *Triangulum *Aries *Pisces *Cetus *Leo (rising) *Hydra (rising) *Canes Venatici (rising) Orion--Myth: Orion, the great ​ ​ hunter. In one myth, Orion boasted he would kill all the wild animals on the earth. But, the earth goddess Gaia, who was the protector of all animals, produced a gigantic scorpion, whose body was so heavily encased that Orion was unable to pierce through the armour, and was himself stung to death. His companion Artemis was greatly saddened and arranged for Orion to be immortalised among the stars. Scorpius, the scorpion, was placed on the opposite side of the sky so that Orion would never be hurt by it again. To this day, Orion is never seen in the sky at the same time as Scorpius. DSO’s ● ***M42 “Orion Nebula” (Neb) with Trapezium A stellar ​ ​ ​ nursery where new stars are being born, perhaps a thousand stars. These are immense clouds of interstellar gas and dust collapse inward to form stars, mainly of ionized hydrogen which gives off the red glow so dominant, and also ionized greenish oxygen gas. The youngest stars may be less than 300,000 years old, even as young as 10,000 years old (compared to the Sun, 4.6 billion years old). 1300 ly. ​ ​ 1 ● *M43--(Neb) “De Marin’s Nebula” The star-forming ​ “comma-shaped” region connected to the Orion Nebula. ● *M78--(Neb) Hard to see. A star-forming region connected to the ​ Orion Nebula.
    [Show full text]
  • Young Super-Neptune Offers Clues to the Origin of Close-In Exoplanet 21 June 2016, by Rebecca Johnson
    Young super-Neptune offers clues to the origin of close-in exoplanet 21 June 2016, by Rebecca Johnson planets in the same planetary system, or with more distant stars. These scenarios can be tested observationally by searching for young planets and studying their orbits. If the close-in population formed in place or migrated in through interactions with the natal disk, they reach their final orbital distances early on and will be found close in at young ages. In comparison, migrating a planet inward through interactions with other planets or more distant stars is effective on much longer timescales. If the latter processes dominate, planets will not be found close to their K2-33 b, shown in this illustration, is one of the youngest stars when they are young. exoplanets detected to date. It makes a complete orbit around its star in about five days. These two characteristics combined provide exciting new directions for planet-formation theories. K2-33b could have formed on a farther out orbit and quickly migrated inward. Alternatively, it could have formed in situ, or in place. Credit: NASA/JPL-Caltech A team of astronomers has confirmed the existence of a young planet, only 11 million years old, that orbits very close to its star (at 0.05 AU), with an orbital period of 5.4 days. Approximately 5 times the size of the Earth, the new planet is a "super-Neptune" and the youngest such planet This image shows the K2-33 system, and its planet known. The discovery lends unique insights into K2-33b, compared to our own solar system.
    [Show full text]
  • The Skyscraper 2009 04.Indd
    A Better Galaxy Guide: Early Spring M67: One of the most ancient open clusters known and Craig Cortis is a great novelty in this regard. Located 1.7° due W of mag NGC 2419: 3.25° SE of mag 6.2 66 Aurigae. Hard to find 4.3 Alpha Cancri. and see; at E end of short row of two mag 7.5 stars. Highly NGC 2775: Located 3.7° ENE of mag 3.1 Zeta Hydrae. significant and worth the effort —may be approximately (Look for “Head of Hydra” first.) 300,000 light years distant and qualify as an extragalactic NGC 2903: Easily found at 1.5° due S of mag 4.3 Lambda cluster. Named the Intergalactic Wanderer. Leonis. NGC 2683: Marks NW “crook” of coathanger-type triangle M95: One of three bright galaxies forming a compact with easy double star mag 4.2 Iota Cancri (which is SSW by triangle, along with M96 and M105. All three can be seen 4.8°) and mag 3.1 Alpha Lyncis (at 6° to the ENE). together in a low power, wide field view. M105 is at the NE tip of triangle, midway between stars 52 and 53 Leonis, mag Object Type R.A. Dec. Mag. Size 5.5 and 5.3 respectively —M95 is at W tip. Lynx NGC 3521: Located 0.5° due E of mag 6.0 62 Leonis. M65: One of a pair of bright galaxies that can be seen in NGC 2419 GC 07h 38.1m +38° 53’ 10.3 4.2’ a wide field view along with M66, which lies just E.
    [Show full text]
  • A Photometric and Spectroscopic Study of the Cataclysmic Variable Sx Leonis Minoris in Quiescence and Superoutburst1 R
    THE ASTRONOMICAL JOURNAL, 115:787È800, 1998 February ( 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A. A PHOTOMETRIC AND SPECTROSCOPIC STUDY OF THE CATACLYSMIC VARIABLE SX LEONIS MINORIS IN QUIESCENCE AND SUPEROUTBURST1 R. MARK WAGNER,2 JOHN R.THORSTENSEN,3 R. K.HONEYCUTT,4 S. B.HOWELL,5 R. H. KAITCHUCK,6 T. J.KREIDL,7 J. W.ROBERTSON,4 E. M. SION,8 AND S. G. STARRFIELD9 Received 1996 December 17; revised 1997 October 27 ABSTRACT We present CCD imaging, CCD photometry on long and short timescales, and time-resolved spectros- copy of SX LMi, a new SU Ursae Majoris type dwarf nova. The quiescent optical spectrum shows broad double-peaked Balmer, He I, and He II emission lines, similar to other quiescent dwarf novae. Absorption lines from a late-type secondary are not detected. Time-resolved spectra obtained in quies- cence reveal radial velocity variations of the Balmer emission lines on a period of 0.06717 ^ 0.00011 days, or 96.72 ^ 0.16 minutes, with only a slight possibility of a daily cycle-count error. Optical photometry obtained between 1987 and 1991 shows Ñickering with a peak-to-peak amplitude of ^0.18 mag. The binary orbital period can sometimes be seen in the photometric record. Long-term photometric monitor- ing by Indiana UniversityÏs robotic telescope RoboScope for a 3 year period between 1992 October and 1995 June shows seven well-deÐned outbursts and marginally detects a few others. The outburst interval varies between 34 and 64 days. During the 1994 December outburst, optical photometric observations show that SX LMi exhibited superhumps with a period of 0.06893 ^ 0.00012 days, which is 2.6% ^ 0.2% longer than the orbital period, as expected for a normal SU UMa star at this period.
    [Show full text]
  • Educator's Guide: Orion
    Legends of the Night Sky Orion Educator’s Guide Grades K - 8 Written By: Dr. Phil Wymer, Ph.D. & Art Klinger Legends of the Night Sky: Orion Educator’s Guide Table of Contents Introduction………………………………………………………………....3 Constellations; General Overview……………………………………..4 Orion…………………………………………………………………………..22 Scorpius……………………………………………………………………….36 Canis Major…………………………………………………………………..45 Canis Minor…………………………………………………………………..52 Lesson Plans………………………………………………………………….56 Coloring Book…………………………………………………………………….….57 Hand Angles……………………………………………………………………….…64 Constellation Research..…………………………………………………….……71 When and Where to View Orion…………………………………….……..…77 Angles For Locating Orion..…………………………………………...……….78 Overhead Projector Punch Out of Orion……………………………………82 Where on Earth is: Thrace, Lemnos, and Crete?.............................83 Appendix………………………………………………………………………86 Copyright©2003, Audio Visual Imagineering, Inc. 2 Legends of the Night Sky: Orion Educator’s Guide Introduction It is our belief that “Legends of the Night sky: Orion” is the best multi-grade (K – 8), multi-disciplinary education package on the market today. It consists of a humorous 24-minute show and educator’s package. The Orion Educator’s Guide is designed for Planetarians, Teachers, and parents. The information is researched, organized, and laid out so that the educator need not spend hours coming up with lesson plans or labs. This has already been accomplished by certified educators. The guide is written to alleviate the fear of space and the night sky (that many elementary and middle school teachers have) when it comes to that section of the science lesson plan. It is an excellent tool that allows the parents to be a part of the learning experience. The guide is devised in such a way that there are plenty of visuals to assist the educator and student in finding the Winter constellations.
    [Show full text]
  • The Heavens in August a Study of Short Period Variables
    100 SCIENTIFIC,AMERlCAN July 31, 1915 The Heavens in August A Study of Short Period Variables By Prof. Henry Norris Russell, Ph.D. HE warm clear nights of summer offer the amateur which is marked on our map, .and the second lies about and but 18 minutes of arc apart, while Neptune is only T the best chance for star-gazing in all the year, and, two fifths of the way from this to () Ophiuchi (also a degree away on the other side. This simultaneous fortunately, he has one of the finest portions of the shown on the map) and is the only bright star near conjunction of three planets is rather remarkable, but, heavens at his command in the splendid region of the this line. The character of the variation is in both as they rise less than an hour earlier than the Sun, Milky Way, which stretches from Cassiopeia and cases very similar to that of the stars previously de­ Neptune will be utterly invisible, though the other two Cygnus through Aquila to Sagittarius and Scorpio, and scribed. w Sagittarii varies from magnitude 4.3 to 5.1 planets may easily be seen with a telescope (provided forms a vast circle right across the summit of the vault in a period of 7.595 days, the ris� in brightness taking with suitable finding circles ) even in broad daylight, of heaven. about half as long as the fall, and the maximum being and in the same low-power field. The veriest novice can learn in an hour to identify a little more than twice the minimum light.
    [Show full text]
  • The Transfiguration in the Theology of Gregory Palamas And
    Duquesne University Duquesne Scholarship Collection Electronic Theses and Dissertations Spring 2015 Deus in se et Deus pro nobis: The rT ansfiguration in the Theology of Gregory Palamas and Its Importance for Catholic Theology Cory Hayes Follow this and additional works at: https://dsc.duq.edu/etd Recommended Citation Hayes, C. (2015). Deus in se et Deus pro nobis: The rT ansfiguration in the Theology of Gregory Palamas and Its Importance for Catholic Theology (Doctoral dissertation, Duquesne University). Retrieved from https://dsc.duq.edu/etd/640 This Immediate Access is brought to you for free and open access by Duquesne Scholarship Collection. It has been accepted for inclusion in Electronic Theses and Dissertations by an authorized administrator of Duquesne Scholarship Collection. For more information, please contact [email protected]. DEUS IN SE ET DEUS PRO NOBIS: THE TRANSFIGURATION IN THE THEOLOGY OF GREGORY PALAMAS AND ITS IMPORTANCE FOR CATHOLIC THEOLOGY A Dissertation Submitted to the McAnulty Graduate School of Liberal Arts Duquesne University In partial fulfillment of the requirements for the degree of Doctor of Philosophy By Cory J. Hayes May 2015 Copyright by Cory J. Hayes 2015 DEUS IN SE ET DEUS PRO NOBIS: THE TRANSFIGURATION IN THE THEOLOGY OF GREGORY PALAMAS AND ITS IMPORTANCE FOR CATHOLIC THEOLOGY By Cory J. Hayes Approved March 31, 2015 _______________________________ ______________________________ Dr. Bogdan Bucur Dr. Radu Bordeianu Associate Professor of Theology Associate Professor of Theology (Committee Chair) (Committee Member) _______________________________ Dr. Christiaan Kappes Professor of Liturgy and Patristics Saints Cyril and Methodius Byzantine Catholic Seminary (Committee Member) ________________________________ ______________________________ Dr. James Swindal Dr.
    [Show full text]
  • Astronomy 2008 Index
    Astronomy Magazine Article Title Index 10 rising stars of astronomy, 8:60–8:63 1.5 million galaxies revealed, 3:41–3:43 185 million years before the dinosaurs’ demise, did an asteroid nearly end life on Earth?, 4:34–4:39 A Aligned aurorae, 8:27 All about the Veil Nebula, 6:56–6:61 Amateur astronomy’s greatest generation, 8:68–8:71 Amateurs see fireballs from U.S. satellite kill, 7:24 Another Earth, 6:13 Another super-Earth discovered, 9:21 Antares gang, The, 7:18 Antimatter traced, 5:23 Are big-planet systems uncommon?, 10:23 Are super-sized Earths the new frontier?, 11:26–11:31 Are these space rocks from Mercury?, 11:32–11:37 Are we done yet?, 4:14 Are we looking for life in the right places?, 7:28–7:33 Ask the aliens, 3:12 Asteroid sleuths find the dino killer, 1:20 Astro-humiliation, 10:14 Astroimaging over ancient Greece, 12:64–12:69 Astronaut rescue rocket revs up, 11:22 Astronomers spy a giant particle accelerator in the sky, 5:21 Astronomers unearth a star’s death secrets, 10:18 Astronomers witness alien star flip-out, 6:27 Astronomy magazine’s first 35 years, 8:supplement Astronomy’s guide to Go-to telescopes, 10:supplement Auroral storm trigger confirmed, 11:18 B Backstage at Astronomy, 8:76–8:82 Basking in the Sun, 5:16 Biggest planet’s 5 deepest mysteries, The, 1:38–1:43 Binary pulsar test affirms relativity, 10:21 Binocular Telescope snaps first image, 6:21 Black hole sets a record, 2:20 Black holes wind up galaxy arms, 9:19 Brightest starburst galaxy discovered, 12:23 C Calling all space probes, 10:64–10:65 Calling on Cassiopeia, 11:76 Canada to launch new asteroid hunter, 11:19 Canada’s handy robot, 1:24 Cannibal next door, The, 3:38 Capture images of our local star, 4:66–4:67 Cassini confirms Titan lakes, 12:27 Cassini scopes Saturn’s two-toned moon, 1:25 Cassini “tastes” Enceladus’ plumes, 7:26 Cepheus’ fall delights, 10:85 Choose the dome that’s right for you, 5:70–5:71 Clearing the air about seeing vs.
    [Show full text]