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Ira Sprague Bowen Papers, 1940-1973
http://oac.cdlib.org/findaid/ark:/13030/tf2p300278 No online items Inventory of the Ira Sprague Bowen Papers, 1940-1973 Processed by Ronald S. Brashear; machine-readable finding aid created by Gabriela A. Montoya Manuscripts Department The Huntington Library 1151 Oxford Road San Marino, California 91108 Phone: (626) 405-2203 Fax: (626) 449-5720 Email: [email protected] URL: http://www.huntington.org/huntingtonlibrary.aspx?id=554 © 1998 The Huntington Library. All rights reserved. Observatories of the Carnegie Institution of Washington Collection Inventory of the Ira Sprague 1 Bowen Papers, 1940-1973 Observatories of the Carnegie Institution of Washington Collection Inventory of the Ira Sprague Bowen Paper, 1940-1973 The Huntington Library San Marino, California Contact Information Manuscripts Department The Huntington Library 1151 Oxford Road San Marino, California 91108 Phone: (626) 405-2203 Fax: (626) 449-5720 Email: [email protected] URL: http://www.huntington.org/huntingtonlibrary.aspx?id=554 Processed by: Ronald S. Brashear Encoded by: Gabriela A. Montoya © 1998 The Huntington Library. All rights reserved. Descriptive Summary Title: Ira Sprague Bowen Papers, Date (inclusive): 1940-1973 Creator: Bowen, Ira Sprague Extent: Approximately 29,000 pieces in 88 boxes Repository: The Huntington Library San Marino, California 91108 Language: English. Provenance Placed on permanent deposit in the Huntington Library by the Observatories of the Carnegie Institution of Washington Collection. This was done in 1989 as part of a letter of agreement (dated November 5, 1987) between the Huntington and the Carnegie Observatories. The papers have yet to be officially accessioned. Cataloging of the papers was completed in 1989 prior to their transfer to the Huntington. -
Guide Du Ciel Profond
Guide du ciel profond Olivier PETIT 8 mai 2004 2 Introduction hjjdfhgf ghjfghfd fg hdfjgdf gfdhfdk dfkgfd fghfkg fdkg fhdkg fkg kfghfhk Table des mati`eres I Objets par constellation 21 1 Androm`ede (And) Andromeda 23 1.1 Messier 31 (La grande Galaxie d'Androm`ede) . 25 1.2 Messier 32 . 27 1.3 Messier 110 . 29 1.4 NGC 404 . 31 1.5 NGC 752 . 33 1.6 NGC 891 . 35 1.7 NGC 7640 . 37 1.8 NGC 7662 (La boule de neige bleue) . 39 2 La Machine pneumatique (Ant) Antlia 41 2.1 NGC 2997 . 43 3 le Verseau (Aqr) Aquarius 45 3.1 Messier 2 . 47 3.2 Messier 72 . 49 3.3 Messier 73 . 51 3.4 NGC 7009 (La n¶ebuleuse Saturne) . 53 3.5 NGC 7293 (La n¶ebuleuse de l'h¶elice) . 56 3.6 NGC 7492 . 58 3.7 NGC 7606 . 60 3.8 Cederblad 211 (N¶ebuleuse de R Aquarii) . 62 4 l'Aigle (Aql) Aquila 63 4.1 NGC 6709 . 65 4.2 NGC 6741 . 67 4.3 NGC 6751 (La n¶ebuleuse de l’œil flou) . 69 4.4 NGC 6760 . 71 4.5 NGC 6781 (Le nid de l'Aigle ) . 73 TABLE DES MATIERES` 5 4.6 NGC 6790 . 75 4.7 NGC 6804 . 77 4.8 Barnard 142-143 (La tani`ere noire) . 79 5 le B¶elier (Ari) Aries 81 5.1 NGC 772 . 83 6 le Cocher (Aur) Auriga 85 6.1 Messier 36 . 87 6.2 Messier 37 . 89 6.3 Messier 38 . -
Journal Für Astronomie ISSN 1615-0880
Journal für Astronomie www.vds-astro.de ISSN 1615-0880 Nr. 75 4/2020 Zeitschrift der Vereinigung der Sternfreunde e.V. Infrarotastronomie ASTRONOMISCHE VEREINIGUNGEN Die Sternwarte St. Andreasberg KOMETEN Die Entwicklung von C/2020 F3 (NEOWISE) PLANETEN Die Sichtbarkeit von Venus im Frühjahr 2020 Canon EOS 250D & 2000D modifiziert für die Astrofotografie ! Ob mit Kameraobjektiv oder am Teleskop: Modizierte Canon EOS DSLR Kameras bieten Ihnen einen einfachen Einstieg in die Astrofotograe! Die Vorteile im Überblick: • etwa fünffach höhere Empfindlichkeit bei H-alpha und SII • Infrarot Blockung der Kamera bleibt vollständig erhalten • kein Einbau eines teuren Ersatzfilters • mit Astronomik OWB-Clip-Filter uneingeschränkt bei Tag nutzbar • auch ohne Computer am Teleskop einsatzfähig • 14 Bit Datentiefe im RAW-Format, 24 Megapixel • bei der 250Da: Erhalt des EOS Integrated Cleaning System • bei der 250Da: Dreh- und schwenkbarer Bildschirm • kompatibel mit vielen gängigen Astronomieprogrammen • voller Erhalt der Herstellergarantie Weitere Modelle auf Anfrage Wir bauen auch Ihre bereits vorhandene Kamera um! Canon EOS 250Da € 72037 * Canon EOS 2000Da € 54491 * * Tagespreis vom 07. August 2020 mit 200mm 1:4 Reflektor ©Bruno Mattern, Aufnahme Astronomik Deep-Sky RGB Farbfiltersatz Neuentwicklung! + optimierte Bildschärfe + höchster Kontrast + maximale Transmission = optimale Ergebnisse © Michael Sidonio Annals of the Deep Sky - A Survey of Galactic and Extragalactic Objects astro-shop Diese englischsprachige Buchreihe ist als mehrbändiges Werk angelegt, das Das seit zwei Jahrzehnten erfolgreiche Konzept die heutige Sicht auf alle Sternbilder des Himmels und die in Ihnen beobacht- hat inzwischen viele Nachahmer gefunden. baren Objekte darstellt. Deshalb achten Sie unbedingt darauf, dass Sie Die Gliederung erfolgt alphabetisch nach Sternbildern. Vergleichbar sind die auf der richtigen astro-shop Seite landen: Bücher mit "Burnham's Celestial Handbook" oder "Taschenatlas der Sternbilder“, eben aktualisiert auf den Wissens- und Technikstand von heute. -
Binocular Challenges
This page intentionally left blank Cosmic Challenge Listing more than 500 sky targets, both near and far, in 187 challenges, this observing guide will test novice astronomers and advanced veterans alike. Its unique mix of Solar System and deep-sky targets will have observers hunting for the Apollo lunar landing sites, searching for satellites orbiting the outermost planets, and exploring hundreds of star clusters, nebulae, distant galaxies, and quasars. Each target object is accompanied by a rating indicating how difficult the object is to find, an in-depth visual description, an illustration showing how the object realistically looks, and a detailed finder chart to help you find each challenge quickly and effectively. The guide introduces objects often overlooked in other observing guides and features targets visible in a variety of conditions, from the inner city to the dark countryside. Challenges are provided for viewing by the naked eye, through binoculars, to the largest backyard telescopes. Philip S. Harrington is the author of eight previous books for the amateur astronomer, including Touring the Universe through Binoculars, Star Ware, and Star Watch. He is also a contributing editor for Astronomy magazine, where he has authored the magazine’s monthly “Binocular Universe” column and “Phil Harrington’s Challenge Objects,” a quarterly online column on Astronomy.com. He is an Adjunct Professor at Dowling College and Suffolk County Community College, New York, where he teaches courses in stellar and planetary astronomy. Cosmic Challenge The Ultimate Observing List for Amateurs PHILIP S. HARRINGTON CAMBRIDGE UNIVERSITY PRESS Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, Sao˜ Paulo, Delhi, Dubai, Tokyo, Mexico City Cambridge University Press The Edinburgh Building, Cambridge CB2 8RU, UK Published in the United States of America by Cambridge University Press, New York www.cambridge.org Information on this title: www.cambridge.org/9780521899369 C P. -
Narrowband Imaging and Spectrophotometry of Galactic Emission Nebulae
Narrowband Imaging and Spectrophotometry of Galactic Emission Nebulae Julien Chemouni Bach Independent Project Tufts University May 2009 Abstract The goal of this paper is to provide an introduction to the field of narrowband imaging of emission nebulae. We consider the emission properties of HII regions, planetary nebulae, and shock-excited nebulae (e.g. supernova remnants), particularly in the light of H-alpha, [SII], and [OIII]. We have carried out optical observations of these nebulae using the 0.6-m telescope at the Clay Center Observatory along with special narrowband filters. These observa- tions serve as the basis for explaining our observation methods and procedures in the context of narrowband imaging and spectrophotometry of emission nebulae. We begin by discussing the physical theory of emission nebula. We then look more directly at the specific factors involved in narrowband imaging and the observations and measurements required for any sort of analysis. We detail how measurements can be used to deduce specific nebular properties. Next, we discuss the instrumentation and filters used in this research and the observing strategy. We present electronic imaging data obtained of the HII region M43 and proceed to demonstrate the process of data reduction using the Image Reduction and Analysis Facility (IRAF) suite of software. Reduction steps include using dark, bias, and flat-field frames to remove instrumental artifacts from the target frames. We conclude by discussing further analysis that can be conducted in order to obtain spectra, combined images and final scientific results. 1 Contents 1 Introduction 3 2 Spectrophotometric Properties of Ionized Emission Nebulae 4 2.1 Photoionized Nebulae (HII Regions and Planetary Nebulae) . -
Donald E. Osterbrock 1924–2007
Donald E. Osterbrock 1924–2007 A Biographical Memoir by Gregory A. Shields ©2013 National Academy of Sciences. Any opinions expressed in this memoir are those of the author and do not necessarily reflect the views of the National Academy of Sciences. DONALD EDWARD OSTERBROCK July 13, 1924–January 11, 2007 Elected to the NAS, 1966 Donald E. Osterbrock was born in Ohio during the first quarter of the 20th century and died in California during the first quarter of the 21st. His astronomical research showed an exceptional mastery both of theory and observation. After important initial contributions to the understanding of the Milky Way and stellar structure, he did outstanding work on emission-line nebulae, on active galactic nuclei, and on the history of astronomy. He was an excellent teacher, and many of his doctoral students went on to distinguished careers in astronomy. He served as director of the Lick Observatory and as president of the American Astronomical Society. Those who worked with him appreciated his style of simplicity and directness, which were likely rooted in his Midwestern upbringing. By Gregory A. Shields Early years Donald E. Osterbrock (or “Don,” as his friends and associates called him), was born on July 13, 1924, in Cincinnati, Ohio. His parents, William C. and Elsie Wettlin Osterbrock, had lived their entire lives in that city on the bank of the Ohio River. His father’s parents and mother’s grandparents had emigrated from Germany. Don’s father, talented in physical sciences and mathematics, graduated from the University of Cincinnati in 1918 and was hired as an instructor in electrical engineering, ultimately becoming chair- man of the department. -
Heart and Soul Bared in H-Alpha
Vol. 2015, No. 11 Newsletter of the New Hampshire Astronomical Society November 2015 In This Issue… Society Activities Featured Article 3 9 YFOS Pot-luck Shooting with my New Canon 2 President’s Message Nashua Winter Stroll 13 The Regular Items 2 Sky Watch Review 6 Object of the Month Business Meeting Report Epping Middle School December: M52 Treasurer’s Report Bethlehem Public Library Contact Information GSAMA Aviation Day 7 Images of the Month Club Loaner Scopes Kimball Library Astronomy Resource Guide Boy Scout Troop 11 Sharpless 2-190 and 2-199 Upcoming Events and Credits Heart and Soul bared in H-alpha or Soul and Heart – IC 1848 (left) and IC 1805, imaged in H-α by Herb Bubert in December 2013 with a Canon 70-200mm f/2.8 lens at f/3.5 attached directly to his SBIG ST-8300M camera mounted on the G11 plus PHD guiding with a 50mm finderscope (see page 7). 2 President’s Message Looking Back at 2015 I have now been club President for almost a year. It's been a good year for NHAS, I think. In particular, we managed to do two things which we had wanted to do for years and never quite got around to before: a summer picnic and pre-Christmas telescope-buying talk for the general public. The summer picnic went well and I hope we will have one again next year. The pre-Christmas talk did not go so well. We wanted to educate the general public so that when they bought telescopes they would buy good telescopes. -
Interstellarum 17 Starhopper
interstellarumEditorial fokussiert Wegen der kurzen Zeit, die diesmal zwi- schen dem Erscheinen dieser und der letz- Liebe Beobachterinnen, liebe Beobachter, ten Ausgabe lag, können wir in diesem Heft nur erste Ergebnisse der interstellarum Ein- Wir bedanken uns ganz herzlich bei Ihnen steiger-Aktion zeigen. Wir möchten alle allen für die hervorragende Aufnahme des Leser herzlich aufrufen, an dieser einmali- ersten Heftes der neuen Folge. Ihr gen Initiative teilzunehmen. Bitte informie- Zuspruch, Ihre Ermutigungen und viele ren Sie sich auf Seite 9 ausführlich über neue Bestellungen machten uns klar, dass unser neues Zielobjekt M 13 – unter allen wir auf dem richtigen Weg sind. Wir möch- Einsendern von Einsteiger-Beschreibungen, ten Sie dabei auch weiterhin an unserer Sei- -Zeichnungen und -Fotos verlosen wir drei te haben – beteiligen Sie sich an interstella- Freiabos und einen »Deep Sky Reiseführer«! rum kritisch und aktiv! Übrigens: Wir möchten Sie recht herzlich Unsere Service-Plattform im Internet – auf die Deep-Sky-Tagung 2001 einladen. www.interstellarum.de – wird mehr und Dort können Sie nicht nur in entspannter mehr zu einer Drehscheibe der Informatio- Atmosphäre über Deep-Sky fachsimpeln, nen für unsere Leser, die wir in naher sondern auch persönlichen Kontakt zum Zukunft noch deutlich ausbauen werden. interstellarum-Team knüpfen, wenn Sie Besuchen Sie unsere Website doch regelmä- wollen – wir freuen uns darauf. Mehr ßig und geben Sie auch anderen Stern- Informationen und Anmeldeunterlagen freunden unsere Internet-Seiten als Surf- finden Sie in diesem Heft. tipp weiter! Gefällt Ihnen das neue interstellarum? Wir haben versucht, Ihnen mit dieser Aus- Wenn ja, empfehlen Sie uns doch weiter: gabe abermals mehr zu bieten, als dies Ihren Beobachtungsfreunden, Ihren Ver- schon bei interstellarum 16 der Fall war: ein einskollegen, und warum nicht auch dem angenehmes Layout, noch mehr Farbe und jungen Einsteiger auf dem Beobachtungs- wieder viele interessante Beiträge. -
250+ Deep-Sky Objects Visible with 7X35 Binoculars and the Naked-Eye
6726 1 Scott N. Harrington 2nd edition September, 2018 2 To my family, Who were always understanding of my excursions under the stars. To the late Jack Horkheimer, a.k.a. Star Gazer, Whose television show kept this young astronomer inspired during those crucial first years. I’ll never stop “looking up”. And in memory of my dog Nell, who kept me company many long evenings – especially the one just before she passed away peacefully at the age of fifteen. I owe her a thanks for helping me with my observations by making this young astronomer feel safe at night. You will always be my favorite of our dogs. 3 Acknowledgements Below is a list of books that I read (most for the first time) in the last few years. They were all deeply influential in helping me discover many of the toughest objects that fill out my list. I would like to note that one I have not read, but greatly look forward to doing so, is Richard P. Wilds Bright & Dark Nebulae: An Observers Guide to Understanding the Clouds of the Milky Way Galaxy. Atlas of the Messier Objects by Ronald Stoyan The Backyard Astronomer’s Guide* by Terence Dickinson and Alan Dyer Cosmic Challenge – The Ultimate Observing List for Amateurs by Philip S. Harrington Deep-Sky Companions: The Caldwell Objects by Stephen James O’Meara Deep-Sky Companions: Hidden Treasures by Stephen James O'Meara Deep-Sky Companions: The Messier Objects by Stephen James O’Meara Deep-Sky Companions: The Secret Deep by Stephen James O’Meara Deep-Sky Wonders by Sue French Observing Handbook and Catalogue of Deep-Sky Objects by Christian B. -
The Sidereal Times April 2016
Observe—Educate—Have Fun The April 2016 Sidereal Times The Official Newsletter of The Albuquerque Astronomical Society P.O. Box 50581, Albuquerque, New Mexico 87181-0581 www.TAAS.org taas — 2011 winner Of astronomy magazine’S OuT-Of-ThiS-wOrld AwArd SiNcE 1959 General Meeting News TAAS Astronomy 101 Lynne Olson Saturday, April 23, 6:00 p.m. TAAS General Meeting (before the General Meeting) Saturday, April 23, 7:00 P.M. UNM Science and Math Learning Center All AboutFree the and TAAS Open Observatory, to the Public GNTO UNM Science and Math Learning Center by LynneJim Fordice, Olson Observatory Director Jim Fordice, Director of the Society’s Gen- eral Nathan Twining Observatory, will re- Enjoy Dark Skies, Cookies, veal all of the outstanding features of this and Cider in Placitas observatory...the domes, the telescopes, the buildings and facilities, the superb dark-sky attraction of this site, the oppor- Saturday, April 16, Dusk To Late tunity for camaraderie and sharing knowl- by LynnePlacitas Olson Community Library edge...and how to go about visiting and using it. The observatory is for members TAAS Visits Astronomical and guests only, and you will learn how to England be both! The Placitas Community Library and The Albuquerque Astronomical Society (TAAS) This session is excellent for new members David Frizzell and Barry Spletzer will co-host a public star party on the and old and the interested public. grounds of the library, located 4.5 miles east Whether you are of I-25 from the Placitas exit at Bernalillo. peering through This popular event has two big points to Join us for an enjoyable evening which the dome tele- recommend it—the excellent dark-sky loca- features not only our usual official re- scope, your own tion, aided by the venue’s use of red lights, ports, but two—not one, but two—speak- telescope, or one and the hospitality of the library staff and ers on diverse aspects of the recent trip to of the observatory gnto imaging dome its volunteers in providing parking and ci- England by our TAAS delegation. -
A Cluster Within a Cluster 25 April 2012
A cluster within a cluster 25 April 2012 upper left of the image. It is a young star cluster that is the densest part of a more widely scattered association containing about one hundred brilliant blue-white stars. The picture also shows the cluster's associated nebula - a cloud of glowing hydrogen gas that is called Sh2-54 - as well as dust clouds. NGC 6604 lies about 5500 light-years away in the constellation of Serpens (The Serpent) and is located about two degrees north of the Eagle Nebula in the night sky. The bright stars are easily seen in a small telescope and were first catalogued by William Herschel in 1784. However, the faint gas cloud escaped attention until the 1950s when it was catalogued by Stewart Sharpless on photographs from the National Geographic-Palomar Sky Atlas. The cluster's hot young stars are helping a new generation of stars to form in NGC 6604, by collecting star-making material into a compact The star cluster NGC 6604 is shown in this image taken region with their strong stellar winds and radiation. by the Wide Field Imager attached to the 2.2-metre MPG/ESO telescope at the La Silla Observatory in Chile. This second generation of stars will quickly replace NGC 6604 is the bright grouping towards to the upper the older generation, as although the brightest left of the image. It is a young star cluster that is the young stars are massive, they consume their fuel densest part of a more widely scattered association copiously and live short lives. -
Aas Ci 170 Gennaio 2014
ASSOCIAZIONE ASTROFILI SEGUSINI 10059 SUSA (TO) Circolare interna n. 170 Gennaio 2014 ________________________________________________________________________________________________________________________ IL CIELO DEL 2014 Come ogni anno, nella prima circolare offriamo ai curiosi del cielo una breve carrellata dei fenomeni più appariscenti. Al cielo è spesso rivolto uno sguardo distratto, ma se ad esso guardiamo invece con attenzione vi possiamo cogliere ogni notte, e talvolta anche durante il giorno, eventi di grande interesse che ci consentono di approfondire la conoscenza dell’universo che si trova “fuori” dal nostro ristretto mondo. Iniziamo dagli aspetti spettacolari che si succederanno nel cielo di quest’anno. La Luna passerà accanto a Marte nella notte tra il 20 e il 21 febbraio, il 18 marzo, il 14 aprile, il 7 giugno e il 5 luglio. Il 3 agosto, poco prima del loro tramonto, potremo notare approssimativamente allineati nel cielo Spica, la Luna, Marte e Saturno, mentre il 31 agosto il nostro satellite naturale si troverà tra il pianeta rosso e Saturno, a meno di un grado da quest’ultimo. Il 29 settembre la Luna tramonterà accanto a Marte accompagnata anche dalla rossa Antares. 3 agosto 2014, sera 31 agosto 2014, sera Il nostro satellite naturale incontrerà anche molte volte gli altri pianeti. Tra questi Giove l’11 febbraio, il 10 marzo, il 6 aprile, il 4 maggio; il 31 maggio la Luna tramonterà tra Mercurio e Giove. Il 18 agosto sorgeranno vicinissimi tra loro Giove e Venere; non lontano da essi si troverà l’ammasso aperto M44, posto nella costellazione del Cancro e detto anche Presepe o Alveare; le condizioni per osservare questo avvicinamento non saranno ottimali a causa delle luci dell’alba.