DOCSLIB.ORG

La Porte Des Étoiles Le Journal Des Astronomes Amateurs Du Nord De La France

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
La Porte Des Étoiles Le Journal Des Astronomes Amateurs Du Nord De La France la porte des étoiles le journal des astronomes amateurs du nord de la France Numéro 39 - hiver 2018 39 À la une Les environs de la grande nébuleuse d’Orion Auteur : F. Lefebvre et D. Fayolle Date : 16/10/2017 Lieu : Saint-Véran (05) GROUPEMENT D’ASTRONOMES Matériel : APN Canon 1000D et AMATEURS COURRIEROIS astrographe Boren-Simon 8'' F2.8 Adresse postale GAAC - Simon Lericque Édito 12 lotissement des Flandres 62128 WANCOURT On avait déjà raconté beaucoup de choses sur Saint-Véran et son Internet observatoire... On pensait même avoir tout dit... On ne voulait pas Site : http://www.astrogaac.fr se répéter... Et pourtant, la mission Astroqueyras 2017 du GAAC Facebook : https://www.facebook.com/GAAC62 a encore repoussé les limites... Imaginez, une fine équipe de 20 E-mail : [email protected] astronomes amateurs venus de l’ensemble des Hauts-de-France (et même au-delà) envahissant pour une semaine le plus bel Les auteurs de ce numéro observatoire astronomique ouvert aux amateurs ; parmi eux, des Philippe Nonckelynck - membre du GAAC contemplateurs, des dessinateurs, des photographes. Les résultats, E-mail : [email protected] fort nombreux, de cette mission historique nous ont poussé à nouveau à prendre la plume pour causer de ce coin de paradis, Simon Lericque - membre du GAAC E-mail : [email protected] de son ciel, de son observatoire et de ses instruments, et surtout de l’ambiance extraordinaire d’une semaine à 3000 mètres sous Yann Picco - membre du GAAC les étoiles... La belle histoire entre le GAAC et Saint-Véran se E-mail : [email protected] poursuit donc avec cet épais numéro de la porte des étoiles... Vincent Prouvoyeur - membre du CAD E-mail : [email protected] Sommaire Michaël Michalak - membre du GAAC E-mail : [email protected] Damien Devigne - membre du GAAC 5..............................Mission Astroqueyras ‘‘Hauts de France’’ E-mail : [email protected] par Philippe Nonckelynck Site : www.astro59.org 17...........................................................Le T62 fête ses 60 ans Laurie Peyroche - membre du GAAC par Simon Lericque E-mail : [email protected] 22...Observer et dessiner les nébuleuses planétaires : de Saint-Véran à Lille L’équipe de conception par Simon Lericque Simon Lericque : rédac’ chef tyrannique Arnaud Agache : relecture et diffusion 33...............................................Le rayon vert et le rayon bleu Catherine Ulicska : relecture et bonnes idées par Yann Picco Fabienne Clauss : relecture et bonnes idées 38...................................Le transit de l’exoplanète WASP-10b David Fayolle : relecture et bonnes idées Émeline Taubert : relecture et bonnes idées par Vincent Prouvoyeur Serge Vasseur : relecture et bonnes idées 40..............................................................La Maison du Soleil Olivier Moreau : conseiller scientifique par Michaël Michalak Edition numérique sous Licence Creative Commons 43.......................................Une mission d’hiver à Saint-Véran par Laurie Peyroche et Damien Devigne 52.............................................................................. La galeríe • • • • LA VIE DU GAAC C’était cet automne Mission Astroqueyras 2017 Animation astro à la Maison de la Nature Geotopia de Mont Bernenchon 28ème Nuit Noire du Pas-de-Calais Fête de la Science 2017 Grand nettoyage du miroir primaire du Dobson 400 du GAAC Ce sera cet hiver GANIL Sous le planétarium Ardennes belges Le 19 janvier prochain, le Le 27 janvier, le GAAC organise À l’approche du printemps, GAAC aura la chance de une rencontre d’utilisateurs de plusieurs membres du GAAC visiter le Grand Accelérateur petits planétariums numériques, iront passer quelques jours dans National d’Ions Lourds à Caen. type LSS. Ce sera au lycée de les Ardennes belges, près de Encore un riche moment en Radinghem, sur le site habituel Bastogne. Au programme : visites perspective... des Nuits Noires culturelles et astronomiques. Retrouvez l’agenda complet de l’association sur http://www.astrogaac.fr/agenda.html • • • • LA VIE DU GAAC Les instantanés Bilan de la mission... Et quel beau bilan ! Saint-Véran (05) - 20/10/2017 Dédé à la barre... Saint-Véran (05) - 14/10/2017 À la plonge ! Saint-Véran (05) - 14/10/2017 Soirée mousse avec le GAAC ! Oignies (62) - 11/11/2017 De la lecture saine pour les vacances Brognon (21) - 13/10/2017 Treize à table... Même un peu plus. Saint-Véran (05) - 14/10/2017 Retrouvez la vie ‘‘officieuse’’ de l’association sur la page Facebook : https://www.facebook.com/GAAC62 la porte des étoiles n°39 • • • • VOYAGE Mission Astroqueyras ‘‘Hauts de France’’ Par Philippe Nonckelynck Pour cette première d’une invasion d’astronomes ‘‘Hauts de France’’ de la station du Pic de Châteaurenard, je me suis proposé pour reprendre la plume de Frédéric, de Michel et de Simon (qui avaient narré les précédentes missions) et vous raconter notre belle aventure 2017. Pour une première fois, l’observatoire serait occupé à 100% depuis sa rénovation en 2016. Nous sommes 20 participants, membres de sept clubs d’astronomie du Nord, du Pas-de-Calais, de Picardie et du Val d’Oise, accompagnés par Dominique Menel, notre pilote de chez Astroqueyras sur le site. Le programme présenté sera sobre. Les limites sont fixées aux ‘‘objets’’ du Groupe Local, mais aussi quelques raretés. Eh ! Ce sera quelques fois du lourd : voir la galerie de fin de journal particulièrement abondante en photos, imagerie et dessins... L’observatoire Astroqueyras, surpeuplé durant une semaine la porte des étoiles n°39 • • • • VOYAGE Dans le registre haut de gamme, nous ne sommes pas non plus peu fiers. Stéphane et Vincent ont œuvré pour le compte de la NASA. Il s’agissait de l’étude du transit d’une exoplanète, WASP 10-b. Bien sûr, leur travail sera noyé dans l’immensité comptable fournie par tous les astronomes réquisitionnés sur le sujet. Mais quand même, leur réussite sera presque totale et un article spécifique sera rédigé à ce sujet (voir page 38). Précision immédiate, j’emploie le terme ‘‘objet’’ à regret. Faute d’une autre appellation usitée pour ces espaces perdus au fond de notre espace visible, juste aux limites de la portée de nos télescopes à portée humaine. Là-bas, si loin, c’est la grandeur de l’univers dans tous les sens, les trois dimensions ajoutées de toutes celles que nous ne connaissons pas encore et même pas prêts de connaître. Je trouve ce terme ‘‘objet’’ bien réducteur, il ne s’agit pas de simples bibelots pour décorer l’espace des humains. Le premier choc, enfin, de notre périple, soit la traversée de la France dans presque une diagonale, c’est ce paysage de montagne. Il s’agit d’une splendeur et d’une émotion quasiment verticale, pierreuse, desséchée et rude. Les couleurs, ici, ce sont des flammes dorées dans les feuillages d’automne, le contraste avec la pierre grise, parfois presque noire. Les bouleaux en vallée, puis, jusque très haut vers les cimes, les délicatesses presque féminines du port des mélèzes, soit en tenue estivale, soit dorée en parure d’automne. Tout ceci en des artifices de lumière mouvante sous un silence majestueux... Vendredi 13 octobre Comme l’an dernier, le camp de base intermédiaire se situe au hameau de la Chap, sous le village de Saint- Véran, qui possède le titre de ‘‘plus haut village d’Europe’’. Ce que j’aime à Saint-Véran, c’est qu’il s’y trouve différents lieux de culte chrétien, un protestant, un catholique. Ce que je n’aime pas à Saint-Véran, c’est une sensation de ‘‘pas propre’’ global du village, avec en particulier, toujours des chantiers mal rangés, les mêmes dépôts informes que l’an dernier. Ceci ne convient pas au statut de ce site quand on héberge un observatoire. Et quel observatoire ! À titre de comparaison, passez jeter un œil quelques kilomètres plus bas, au village de Pierre Grosse et après, on en reparle... Premiers moments de convivialité autour de la table au gîte de La Chalp Dans la chambre du gîte, me voici confronté à un premier moment de poésie intense. Le lit se trouve juste en-dessous d’une ‘‘lucarne-Velux’’. Je suis positionné plein feu sous la Voie lactée à peu près au zénith. Le Cygne se déplace lentement tout au long de la nuit. Tout se déplace en mode géocentrique comme au temps de la conception stoïcienne de l’univers, soit un plongeon dans la pensée scientifique ancienne avant le retour vers Edwin Hubble. Vertige. Vertige. la porte des étoiles n°39 • • • • VOYAGE Trombinoscope de la mission Arnaud Carpentier Carine Souplet Cédric Giraud David Fayolle André ‘‘Dédé’’ Barbarin Philippe ‘‘Fifi’’ Sénicourt François Lefebvre Françoise Auger Huguette Pruvost Jean-Pierre ‘‘Biquet’’ Auger Mathieu Guinot Mathieu Senegas Michel Pruvost Pascale Barbarin Philippe Nonckelynck Sabine Garnier Simon Lericque Stéphane Razemon Vincent Prouvoyeur Yann Picco la porte des étoiles n°39 • • • • VOYAGE Samedi 1 octobre La montée à l’observatoire n’est pas une expédition en soi, mais quand même, en voiture ou à pied, c’est assez sportif. Ma fourgonnette s’était offert la montée et descente sans encombre l’an dernier. J’avais alors retrouvé des sensations de jeunesse parce que, dans un temps lointain, j’ai passé mon permis de conduire en montagne. Mais, cette fois, je suis assez content de ne pas être sollicité pour remonter comme chauffeur cette année. Avec six autres copains de cordée, ce sera chemin à quatre pattes, soit deux pieds plus deux bâtons de randonnée. Cordée, pas vraiment. Les cinq plus jeunes se disputent la tête du peloton à vitesse V² et creusent rapidement l’écart. Yann et Certains courageux attaquent l’ascension à pied... moi-même, nous les regardons s’envoler littéralement vers le sommet. Yann est, certes, légèrement lourd (ancien pilier de rugby) et moi, légèrement vieux. Ça peine un peu. Dur dans mes articulations pourries et les poumons en déficit de O2. Une partie du peloton des grimpeurs s’arrêtera aimablement une demi-heure pour nous attendre.
Load more

Recommended publications
  • I N S I D E T H I S I S S
    Publications from February/février 1998 Volume/volume 92 Number/numero 1 [669] The Royal Astronomical Society of Canada The Beginner’s Observing Guide This guide is for anyone with little or no experience in observing the night sky. Large, easy to read star maps are provided to acquaint the reader with the constellations and bright stars. Basic information on observing the moon, planets and eclipses through the year 2000 is provided. There The Journal of the Royal Astronomical Society of Canada Le Journal de la Société royale d’astronomie du Canada is also a special section to help Scouts, Cubs, Guides and Brownies achieve their respective astronomy badges. Written by Leo Enright (160 pages of information in a soft-cover book with a spiral binding which allows the book to lie flat). Price: $12 (includes taxes, postage and handling) Looking Up: A History of the Royal Astronomical Society of Canada Published to commemorate the 125th anniversary of the first meeting of the Toronto Astronomical Club, “Looking Up — A History of the RASC” is an excellent overall history of Canada’s national astronomy organization. The book was written by R. Peter Broughton, a Past President and expert on the history of astronomy in Canada. Histories on each of the centres across the country are included as well as dozens of biographical sketches of the many people who have volunteered their time and skills to the Society. (hard cover with cloth binding, 300 pages with 150 b&w illustrations) Price: $43 (includes taxes, postage and handling) Observers Calendar — 1998 This calendar was created by members of the RASC.
    [Show full text]
  • Planetary Nebulae
    Planetary Nebulae A planetary nebula is a kind of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from old red giant stars late in their lives. The term "planetary nebula" is a misnomer that originated in the 1780s with astronomer William Herschel because when viewed through his telescope, these objects appeared to him to resemble the rounded shapes of planets. Herschel's name for these objects was popularly adopted and has not been changed. They are a relatively short-lived phenomenon, lasting a few tens of thousands of years, compared to a typical stellar lifetime of several billion years. The mechanism for formation of most planetary nebulae is thought to be the following: at the end of the star's life, during the red giant phase, the outer layers of the star are expelled by strong stellar winds. Eventually, after most of the red giant's atmosphere is dissipated, the exposed hot, luminous core emits ultraviolet radiation to ionize the ejected outer layers of the star. Absorbed ultraviolet light energizes the shell of nebulous gas around the central star, appearing as a bright colored planetary nebula at several discrete visible wavelengths. Planetary nebulae may play a crucial role in the chemical evolution of the Milky Way, returning material to the interstellar medium from stars where elements, the products of nucleosynthesis (such as carbon, nitrogen, oxygen and neon), have been created. Planetary nebulae are also observed in more distant galaxies, yielding useful information about their chemical abundances. In recent years, Hubble Space Telescope images have revealed many planetary nebulae to have extremely complex and varied morphologies.
    [Show full text]
  • RATIOS and STAR FORMATION EFFICIENCIES in SUPERGIANT H Ii REGIONS
    The Astrophysical Journal, 788:167 (7pp), 2014 June 20 doi:10.1088/0004-637X/788/2/167 C 2014. The American Astronomical Society. All rights reserved. Printed in the U.S.A. ENHANCEMENT OF CO(3–2)/CO(1–0) RATIOS AND STAR FORMATION EFFICIENCIES IN SUPERGIANT H ii REGIONS Rie E. Miura1,2, Kotaro Kohno3,4, Tomoka Tosaki5, Daniel Espada1,6,7, Akihiko Hirota8, Shinya Komugi1, Sachiko K. Okumura9, Nario Kuno7,8, Kazuyuki Muraoka10, Sachiko Onodera10, Kouichiro Nakanishi1,6,7, Tsuyoshi Sawada1,6, Hiroyuki Kaneko11, Tetsuhiro Minamidani8, Kosuke Fujii1,2, and Ryohei Kawabe1,6 1 National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; [email protected] 2 Department of Astronomy, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 133-0033, Japan 3 Institute of Astronomy, School of Science, The University of Tokyo, Osawa, Mitaka, Tokyo 181-0015, Japan 4 Research Center for Early Universe, School of Science, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan 5 Joetsu University of Education, Yamayashiki-machi, Joetsu, Niigata 943-8512, Japan 6 Joint ALMA Observatory, Alonso de Cordova 3107, Vitacura 763-0355, Santiago, Chile 7 Department of Astronomical Science, The Graduate University for Advanced Studies (Sokendai), 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan 8 Nobeyama Radio Observatory, Minamimaki, Minamisaku, Nagano 384-1805, Japan 9 Department of Mathematical and Physical Sciences, Faculty of Science, Japan Woman’s University, Mejirodai 2-8-1, Bunkyo, Tokyo 112-8681, Japan 10 Osaka Prefecture University,
    [Show full text]
  • From Luminous Hot Stars to Starburst Galaxies
    9780521791342pre CUP/CONT July 9, 2008 11:48 Page-i FROM LUMINOUS HOT STARS TO STARBURST GALAXIES Luminous hot stars represent the extreme upper mass end of normal stellar evolution. Before exploding as supernovae, they live out their lives of only a few million years with prodigious outputs of radiation and stellar winds which dramatically affect both their evolution and environments. A detailed introduction to the topic, this book connects the astrophysics of mas- sive stars with the extremes of galaxy evolution represented by starburst phenomena. A thorough discussion of the physical and wind parameters of massive stars is pre- sented, together with considerations of their birth, evolution, and death. Hll galaxies, their connection to starburst galaxies, and the contribution of starburst phenomena to galaxy evolution through superwinds, are explored. The book concludes with the wider cosmological implications, including Population III stars, Lyman break galaxies, and gamma-ray bursts, for each of which massive stars are believed to play a crucial role. This book is ideal for graduate students and researchers in astrophysics who are interested in massive stars and their role in the evolution of galaxies. Peter S. Conti is an Emeritus Professor at the Joint Institute for Laboratory Astro- physics (JILA) and theAstrophysics and Planetary Sciences Department at the University of Colorado. Paul A. Crowther is a Professor of Astrophysics in the Department of Physics and Astronomy at the University of Sheffield. Claus Leitherer is an Astronomer with the Space Telescope Science Institute, Baltimore. 9780521791342pre CUP/CONT July 9, 2008 11:48 Page-ii Cambridge Astrophysics Series Series editors: Andrew King, Douglas Lin, Stephen Maran, Jim Pringle and Martin Ward Titles available in the series 10.
    [Show full text]
  • Central Coast Astronomy Virtual Star Party January 16Th 7Pm Pacific
    Central Coast Astronomy Virtual Star Party January 16th 7pm Pacific Welcome to our Virtual Star Gazing session! We’ll be focusing on objects you can see with binoculars or a small telescope, so after our session, you can simply walk outside, look up, and understand what you’re looking at. CCAS President Aurora Lipper and astronomer Kent Wallace will bring you a virtual “tour of the night sky” where you can discover, learn, and ask questions as we go along! All you need is an internet connection. You can use an iPad, laptop, computer or cell phone. When 7pm on Saturday night rolls around, click the link on our website to join our class. CentralCoastAstronomy.org/stargaze Before our session starts: Step 1: Download your free map of the night sky: SkyMaps.com They have it available for Northern and Southern hemispheres. Step 2: Print out this document and use it to take notes during our time on Saturday. This document highlights the objects we will focus on in our session together. Celestial Objects: Moon: The moon is 3 days past new, which is really good for star gazing. Be sure to look at the moon tonight with your naked eyes and/or binoculars! Mercury is rising into the western sky and may be a good target near the end of the month. Mars is up high but is shrinking in size as the weeks progress. *Image credit: all astrophotography images are courtesy of NASA unless otherwise noted. All planetarium images are courtesy of Stellarium. Central Coast Astronomy CentralCoastAstronomy.org Page 1 Main Focus for the Session: 1.
    [Show full text]
  • A Basic Requirement for Studying the Heavens Is Determining Where In
    Abasic requirement for studying the heavens is determining where in the sky things are. To specify sky positions, astronomers have developed several coordinate systems. Each uses a coordinate grid projected on to the celestial sphere, in analogy to the geographic coordinate 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 is probably the most widely used celestial coordinate system. It is also the one most closely related to the geographic coordinate system, because they use the same fun­ damental plane and the same poles. The projection of the Earth's equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles on to the celest ial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate systems: the geographic system is fixed to the Earth; it 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 of course 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. The longitud inal angle is called the right ascension (RA for short).
    [Show full text]
  • September 2020 BRAS Newsletter
    A Neowise Comet 2020, photo by Ralf Rohner of Skypointer Photography Monthly Meeting September 14th at 7:00 PM, via Jitsi (Monthly meetings are on 2nd Mondays at Highland Road Park Observatory, temporarily during quarantine at meet.jit.si/BRASMeets). GUEST SPEAKER: NASA Michoud Assembly Facility Director, Robert Champion What's In This Issue? President’s Message Secretary's Summary Business Meeting Minutes Outreach Report Asteroid and Comet News Light Pollution Committee Report Globe at Night Member’s Corner –My Quest For A Dark Place, by Chris Carlton Astro-Photos by BRAS Members Messages from the HRPO REMOTE DISCUSSION Solar Viewing Plus Night Mercurian Elongation Spooky Sensation Great Martian Opposition Observing Notes: Aquila – The Eagle Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society Baton Rouge Astronomical Society Newsletter, Night Visions Page 2 of 27 September 2020 President’s Message Welcome to September. You may have noticed that this newsletter is showing up a little bit later than usual, and it’s for good reason: release of the newsletter will now happen after the monthly business meeting so that we can have a chance to keep everybody up to date on the latest information. Sometimes, this will mean the newsletter shows up a couple of days late. But, the upshot is that you’ll now be able to see what we discussed at the recent business meeting and have time to digest it before our general meeting in case you want to give some feedback. Now that we’re on the new format, business meetings (and the oft neglected Light Pollution Committee Meeting), are going to start being open to all members of the club again by simply joining up in the respective chat rooms the Wednesday before the first Monday of the month—which I encourage people to do, especially if you have some ideas you want to see the club put into action.
    [Show full text]
  • Narrowband CCD Photometry of Giant HII Regions
    Mon. Not. R. Astron. Soc. 000, 000–000 (0000) Printed 1 November 2018 (MN LATEX style file v2.2) Narrowband CCD Photometry of Giant HII Regions Guillermo Bosch 1 ⋆, Elena Terlevich 2 †, Roberto Terlevich 1 ‡ 1 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA 2 INAOE, Puebla, M´exico 1 November 2018 ABSTRACT We have obtained accurate CCD narrow band Hβ and Hα photometry of Giant HII Regions in M 33, NGC 6822 and M 101. Comparison with previous determinations of emission line fluxes show large discrepancies; their probable origins are discussed. Combining our new photometric data with global velocity dispersion (σ) derived from emission line widths we have reviewed the L(Hβ)) − σ relation. A reanalysis of the properties of the GEHRs included in our sample shows that age spread and the su- perposition of components in multiple regions introduce a considerable spread in the regression. Combining the information available in the literature regarding ages of the associated clusters, evolutionary footprints on the interstellar medium, and kinemati- cal properties of the knots that build up the multiple GEHRs, we have found that a subsample - which we refer to as young and single GEHRs - do follow a tight relation in the L − σ plane. Key words: galaxies: individual: NGC6822, M33, M101 – H ii regions – galaxies: star clusters 1 INTRODUCTION tional explanation for this observed kinematical behaviour. Other authors confirmed the existence of a correlation, al- Accurate photometry of Giant HII Regions (GEHRs) is a though they found different slopes for the linear regression. key source of information about the energetics of these large New models were produced to account for the underlying dy- star-forming regions.
    [Show full text]
  • The 2011 Observers Challenge List
    TMSP OBSERVER'S CHALLENGE 2011 By Kreig McBride and Tom Masterson All observations must be made at TMSP and 25 out of 30 objects must be viewed to earn a unique TMSP Observer's Award lapel pin. You must create a record of your observations which include date, time, instruments used and a brief description and/or sketch of the object. Your records will be returned to you. Size or ID Number V Magnitude Object Type Constellation RA Dec Description Separation The Sun! View 2 days noting changes. H-alpha, white 1 Sol -28m ½ degree Star Cancer 08h 39' +27d 07' light or projection is OK North Galactic Astronomical Catch this one before it sets. Next to the double star 31 2 N/A N/A Coma Berenices 12h 51' +27d 07' Pole Reference point Comae Berenices Omicron-2 a wide 4.9m, 9m double lies close by as does 3 U Cygni 5.9 – 12.1m N/A Carbon Star Cygnus 19.6h +47d 54' 6” diameter, 12.6m Planetary nebula NGC6884 4 M22 5.1m 7.8' Globular Cluster Sagittarius 18h 36.4' -23d 54' Rich, large and bright 5 NGC 6629 11.3m 15” Planetary Nebula Sagittarius 18h 25.7' -23d 12' Stellar at low powers. Central Star is 12.8m 6 Barnard 86 N/A 5' Dark Nebula Sagittarius 18h 03' -27d 53' “Ink Spot” Imbedded in spectacular star field Faint 1' glow surrounding 9.5m star w/a faint companion 7 NGC 6589-90 N/A 5' x 3' Reflection Nebula Sagittarius 18h 16.9'' -19d 47' 25” to its SW A 3.2m, B Reddish/Orange primary, B white, C is 10m companion 8 ETA Sagittarii 3.6m, C 10m, AB pair 3.6” Quadruple Star Sagittarius 18h 17.6' -36d 46' 93” distant at PA303d and D is 13m star 33”
    [Show full text]
  • SAC's 110 Best of the NGC
    SAC's 110 Best of the NGC by Paul Dickson Version: 1.4 | March 26, 1997 Copyright °c 1996, by Paul Dickson. All rights reserved If you purchased this book from Paul Dickson directly, please ignore this form. I already have most of this information. Why Should You Register This Book? Please register your copy of this book. I have done two book, SAC's 110 Best of the NGC and the Messier Logbook. In the works for late 1997 is a four volume set for the Herschel 400. q I am a beginner and I bought this book to get start with deep-sky observing. q I am an intermediate observer. I bought this book to observe these objects again. q I am an advance observer. I bought this book to add to my collect and/or re-observe these objects again. The book I'm registering is: q SAC's 110 Best of the NGC q Messier Logbook q I would like to purchase a copy of Herschel 400 book when it becomes available. Club Name: __________________________________________ Your Name: __________________________________________ Address: ____________________________________________ City: __________________ State: ____ Zip Code: _________ Mail this to: or E-mail it to: Paul Dickson 7714 N 36th Ave [email protected] Phoenix, AZ 85051-6401 After Observing the Messier Catalog, Try this Observing List: SAC's 110 Best of the NGC [email protected] http://www.seds.org/pub/info/newsletters/sacnews/html/sac.110.best.ngc.html SAC's 110 Best of the NGC is an observing list of some of the best objects after those in the Messier Catalog.
    [Show full text]
  • Catalogue of Excitation Classes P for 750 Galactic Planetary Nebulae
    Catalogue of Excitation Classes p for 750 Galactic Planetary Nebulae Name p Name p Name p Name p NeC 40 1 Nee 6072 9 NeC 6881 10 IC 4663 11 NeC 246 12+ Nee 6153 3 NeC 6884 7 IC 4673 10 NeC 650-1 10 Nee 6210 4 NeC 6886 9 IC 4699 9 NeC 1360 12 Nee 6302 10 Nee 6891 4 IC 4732 5 NeC 1501 10 Nee 6309 10 NeC 6894 10 IC 4776 2 NeC 1514 8 NeC 6326 9 Nee 6905 11 IC 4846 3 NeC 1535 8 Nee 6337 11 Nee 7008 11 IC 4997 8 NeC 2022 12 Nee 6369 4 NeC 7009 7 IC 5117 6 NeC 2242 12+ NeC 6439 8 NeC 7026 9 IC 5148-50 6 NeC 2346 9 NeC 6445 10 Nee 7027 11 IC 5217 6 NeC 2371-2 12 Nee 6537 11 Nee 7048 11 Al 1 NeC 2392 10 NeC 6543 5 Nee 7094 12 A2 10 NeC 2438 10 NeC 6563 8 NeC 7139 9 A4 10 NeC 2440 10 NeC 6565 7 NeC 7293 7 A 12 4 NeC 2452 10 NeC 6567 4 Nee 7354 10 A 15 12+ NeC 2610 12 NeC 6572 7 NeC 7662 10 A 20 12+ NeC 2792 11 NeC 6578 2 Ie 289 12 A 21 1 NeC 2818 11 NeC 6620 8 IC 351 10 A 23 4 NeC 2867 9 NeC 6629 5 Ie 418 1 A 24 1 NeC 2899 10 Nee 6644 7 IC 972 10 A 30 12+ NeC 3132 9 NeC 6720 10 IC 1295 10 A 33 11 NeC 3195 9 NeC 6741 9 IC 1297 9 A 35 1 NeC 3211 10 NeC 6751 9 Ie 1454 10 A 36 12+ NeC 3242 9 Nee 6765 10 IC1747 9 A 40 2 NeC 3587 8 NeC 6772 9 IC 2003 10 A 41 1 NeC 3699 9 NeC 6778 9 IC 2149 2 A 43 2 NeC 3918 9 NeC 6781 8 IC 2165 10 A 46 2 NeC 4071 11 NeC 6790 4 IC 2448 9 A 49 4 NeC 4361 12+ NeC 6803 5 IC 2501 3 A 50 10 NeC 5189 10 NeC 6804 12 IC 2553 8 A 51 12 NeC 5307 9 NeC 6807 4 IC 2621 9 A 54 12 NeC 5315 2 NeC 6818 10 Ie 3568 3 A 55 4 NeC 5873 10 NeC 6826 11 Ie 4191 6 A 57 3 NeC 5882 6 NeC 6833 2 Ie 4406 4 A 60 2 NeC 5879 12 NeC 6842 2 IC 4593 6 A
    [Show full text]
  • TRANSIT the Newsletter Of
    TRANSIT The Newsletter of 05 January 2009 Hubble caught Saturn with the edge-on rings in 1996. Image courtesy Eric Karkoschka (UoA) Front Page Image - Saturn, like the Earth, is tilted on its axis compared to the plane of its orbit, being off vertical by 26.7 degrees. Saturn’s rings are aligned with its equator so that means that roughly twice every orbit of Saturn we on Earth see the rings edge on. We pass through the ring plane in September 2009 but at that time Saturn is on the other side of the Sun, so now is the best time to view Saturn in Leo with the almost disappeared rings when they are inclined at 0.8 degrees to our line of sight. The next ring plane crossing is March 2025 Last meeting : 12 December 2008. “The Large Hadron Collider” by Dr Peter Edwards of Durham University. Dr Edwards proved he was a skilled public communicator when he initially launched into a short history of particle physics – we all understood what he was talking about! After then explaining what the LHC was actually looking for and how their massive detectors work he explained the problems caused by the unfortunate accident when firing up the LHC for the first time. The prognosis for future collisions seems to have a varying date but perhaps the 2010 date is the most likely. We wish Dr Edwards and his LHC colleagues the best of luck in achieving an early target date. Next meeting : 09 January 2009 – Members night. The meeting will start with the Society 2009 AGM and follow on with short talks presented by members of the Society.
    [Show full text]