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Interstellarum 23 1 30 46 Liebe Leserinnen, liebe Leser, die zunehmende Lichtverschmutzung ist ein Thema, das uns alle angeht. Anhand einer umfas- senden italienischen Studie, die erstmals dieses anthropogene Phänomen global kartiert hat, wol- len wir die Sensibilität für diesen Teil der Umweltverschmutzung erhöhen. Jeder von uns kann auch im kleinen beitragen, dass in der nicht-astronomischen Öffentlichkeit die Ausein- andersetzung mit diesem für uns Amateure kriti- schen Punkt stattfindet: Zeigen Sie Ihren Bekann- ten und Freunden die Karten in diesem Heft (Sei- te 30), nehmen Sie die Angebote der deutschen und internationalen Initiativen wahr, oder beteili- gen Sie sich aktiv an der bevorstehenden globa- len Dark-Sky-Tagung in der Schweiz – der Nach- thimmel wird es Ihnen danken! Die Zeit ist noch nicht allzulang her, als man Milchstraße in Sölden (Foto: Uwe Wohlrab) Einsteigern pauschal empfahl, mindestens 1500 Mark für ein vernünftiges erstes Teleskop auszu- geben. Damals hätte niemand gedacht, dass es In eigener Sache haben wir zwei Fehler aus der einmal 8"-Newton-Fernrohre für 1000 und weni- letzten Ausgabe zu entschuldigen: In der letzten ger Mark geben würde. In unserem großen Dob- Ausgabe der Einsteigeraktion verwechselten wir son-Test haben wir die vier preiswertesten Tele- die Jupiterbilder von Armin Meyer, Jörg Meyer skope gegenübergestellt – mit erstaunlichem und Frank Meyer, die deswegen alle nochmals Resultat (Seite 61). (und diesmal korrekt) wiedergegeben sind. Unse- re zweite Entschuldigung betrifft die Seite 54 im Sie können selbst entscheiden, welche Instru- letzten Heft, auf der die Bildautorenschaft Hans- mente wir zukünftig testen sollen. Bei unserer Günter Diederichs versehentlich vergessen wurde. Online-Umfrage auf www.interstellarum.de haben bereits über 500 Sternfreunde teilgenommen – Zurecht kritisiert wurden die zum Teil sehr klei- machen Sie mit! nen Bilder in den Objekten der Saison, die unser Bemühen wiederspiegelten, alle Einsendungen zu berücksichtigen. Wir werden künftig wieder nur eine Auswahl der eingehenden Bilder abdrucken, diese dafür in ausreichender Größe. fokussiert Kurz vor Druckbeginn haben wir wieder einmal die Kometenrubrik umgestellt. Grund dafür ist die erste visuelle Entdeckung eines Kometen von deutschem Boden seit 1946. Lesen Sie die außer- gewöhnliche Entdeckungsgeschichte auf Seite 43. clear skies wünschen Titelbild: Ausschnitt aus dem Dieses Dokument ist urheberrechtlich geschützt. Nutzung nur zu privaten Zwecken. Die Weiterverbreitung ist untersagt. Weltatlas der Lichtverschmutzung mit Afrika, Europa und Westasien. Die Karte zeigt die Lichtemission skaliert auf Meeresniveau unter einer Einheitsatmosphäre. Karte von P. Cinzano, F. Falchi (Universität Padua, Italien) und C. D. Elvidge (NOAA National Geophysical Data Center, Boulder). interstellarum 23 1 30 46 Inhalt August/September 2002 8 Beobachterforum Erde 10 Astroszene 30 Globaler Grauschleier Die zunehmende Beeinträchtigung des Nachthimmels 14 Schlagzeilen durch menschliche Lichtquellen ist nicht nur für 18 Aktueller Sternhimmel Sternfreunde ein zunehmendes Ärgernis. Nun hat eine italienische Forschergruppe erstmals die Einsteiger Lichtverschmutzung weltweit kartiert. 22 Besser ausgestattet als Galileo Galilei (4) von Ronald Stoyan Sonnenbeobachtung kann eine der spannendsten Beschäfti- Sonne gungen mit einem Kaufhausfernrohr sein, wenn man die elementaren Sicherheitsregeln beachtet. von Frank Möller 36 Ein neuer Blick auf die Sonne 25 Astronomie im Fernglas: Protuberanzen, Filamente und Flares kann man mit Die großen Kugelsternhaufen im Herkules einem H-alpha-Filter beobachten. Was die neuen Modelle der Firma Coronado bieten beschreibt unser 28 Die interstellarum Einsteiger-Aktion Erfahrungsbericht. von Wolfgang Lille 73 Objekte der Saison 39 Sonne aktuell NGC 6781: Planetarischer Nebel Ein schöner Gasball für kleine und große Öffnungen. Planeten NGC 6755: Offener Sternhaufen 41 Saison der Ovale Dieses Dokument ist urheberrechtlich geschützt. Nutzung nur zu privaten Zwecken. Die Weiterverbreitung ist untersagt. Dieser unbekannte Sternhaufen verdient Ihren Besuch. Großer Roter Fleck und WOS-BA waren die Hauptakteure im Geschehen der vergangenen Jupitersaison. Rubriken von Ronald Stoyan Fokussiert . 1 Termine . 26 Impressum . 6 Kleinanzeigen . 80 Kometen Verzeichnisse . 6 Vorschau . 80 Leserhinweise . 6 Astro-Max . 80 43 Komet Hönig – C/2002-O4 2 interstellarum 23 50 61 www. .de 23 44 Die Kometenseite: Ikeya-Zhangs Abschiedsvorstellung Starhopper Ein letzter Gruß: 341 Jahre müssen wir warten, bis wieder 57 Starhop in Sagittarius solch schöne Aufnahmen von 153P/Ikeya-Zhang gemacht werden können. Die Sommerzeit ist die Zeit der Himmelswunder im Schützen. M 22, Lagunennebel, Trifidnebel und Ink Spot heißen die Milchstraße Favoriten des Starhoppers für Ihre abendliche Himmelstour. 46 Großartige Globulars von Thomas Jäger Tausende Sterne glitzernd aufgelöst: Kugelsternhaufen sind Favoriten jeder Starparty. Wir vergleichen die schönsten acht Hardware Globulars visuell und fotografisch. 61 Viel Öffnung für wenig Geld von Rainer Töpler Um die 500 Euro kosten heute Newton-Teleskope mit 49 Veränderlicher aktuell: Goldilock’s Veränderlicher 203mm Öffnung, wenn sie auf einer Dobson-Montierung Universum stehen. Acht Sternfreunde haben die preiswertesten vier Modelle getestet. 50 Ein neues Großteleskop von Ronald Stoyan, Armin Junblut und Thomas Michna für den Nordhimmel Relativ unbemerkt von der Öffentlichkeit wird derzeit das 63 Meine Sternwarte: Sternwarte Cassiopeia – Steinfurt größte Teleskop der Nordhemisphäre errichtet. 2003 64 Neuigkeiten direkt vom Hersteller soll das 10,3m-GranTeCan auf dem Roque de los Muchachos auf der Kanareninsel La Palma fertiggestellt sein. 68 Bastelecke: Astroleuchte selbst gebaut von Jens Moser Dieses Dokument ist urheberrechtlich geschützt. Nutzung nur zu privaten Zwecken. Die Weiterverbreitung ist untersagt. 53 Zwerggalaxien – ein Ziel für Amateure? Galerie Zwerggalaxien sind das Thema des neuen Projekts der 70 Astrofotos von Michel Hoppe Fachgruppen Astrofotografie und Deep-Sky. Die Autoren geben Hintergrundwissen und listen 15 interessante Objekte für Amateurbeobachter auf. von Peter Riepe und Wolfgang Steinicke interstellarum 23 3 Dieses Dokument ist urheberrechtlich geschützt. Nutzung nur zu privaten Zwecken. Die Weiterverbreitung ist untersagt. Dieses Dokument ist urheberrechtlich geschützt. Nutzung nur zu privaten Zwecken. Die Weiterverbreitung ist untersagt. Service Autorenverzeichnis Andreas Alzner Zeckerner Hauptstraße 3, 91334 Hemhofen [email protected] Ulrich Beinert Eichenstraße 31, 61476 Kronberg Verlag Thomas Engl Karwendelstraße 9/Top12, A-6020 Innsbruck Oculum-Verlag Ronald Stoyan, Erlangen Peter Friedrich Hoheberg 29, 85309 Pörnbach [email protected] Anschrift Béla Hassforther Ringstraße 27, 69115 Heidelberg [email protected] Luitpoldstraße 3, D-91054 Erlangen Manfred Holl Friedrich-Ebert-Damm 12a, 22049 Hamburg [email protected] Abo-Service Michael Hoppe Im Mittenfeld 14, 42859 Remscheid [email protected] bitte immer die Kunden-Nummer angeben; Thomas Jäger Kriemhildstraße 10, 90513 Zirndorf [email protected] schriftlich, per Fax: 09131/978596 oder per Armin Jungblut Siemensstraße 3, 90599 Dietenhofen [email protected] E-Mail: [email protected] Stathis Kafalis Krumpterstraße 6, 81543 München [email protected] Redaktion Jan Kertzscher Carl-Benz-Straße 11, 71717 Beilstein [email protected] Matthias Gräter (-mg), Stephan Schurig Erich Kopowski Tempelhofer Straße 81, 45661 Recklinghausen (-ssg), Ronald Stoyan (-rcs) schriftlich oder Burkhard Kowatsch Hainbuchenstraße 34, 71149 Bondorf [email protected] per E-Mail: [email protected] Jürgen Lamprecht Am Bauernwald 50, 90411 Nürnberg [email protected] Jürgen Liesmann [email protected] Mitarbeit Wolfgang Lille Kirchweg 43, 21726 Heinbockel [email protected] Peter Friedrich, Susanne Friedrich, Béla Hass- Rainer Mannoff Geroldsaeckerweg 41, 76139 Karlsruhe forther, Manfred Holl, Thomas Jäger, André Knöfel, Jürgen Lamprecht, Peter Riepe, Wolf- Thomas Michna Am Donacker 4, 91086 Aurachtal [email protected] gang Steinicke, Rainer Töpler, Klaus Wenzel Frank Möller Bernstorffstraße 14, 22767 Hamburg [email protected] Jens Moser Markusstraße 7, 50259 Pulheim-Sinnersdorf Herstellung Christian Müller Mangstraße 28, 80997 München Ronald Stoyan (Redaktionelle Bearbeitung), Gerhard Rausch Mittelgasse 4, 34295 Edermünde [email protected] Stephan Schurig (Satz und Layout), Gerald Rhemann Linzer Straße 372/1/6, A-1140 Wien Matthias Gräter (Bildbearbeitung, Anzeigen) Peter Riepe Lortzingstraße 5, 44789 Bochum Internet Harald Ryfisch [email protected] www.interstellarum.de, Wolfgang Steinicke Gottenheimerstraße 18, 79224 Umkirch [email protected] www.interstellarum.com, Matthias Stürner Körnerstraße 20, 71720 Oberstenfeld [email protected] [email protected] Rainer Töpler Zaisenweg 6, 73614 Schorndorf Erscheinungsweise Hermann von Eiff Friedberger Straße 1a, 63543 Neuberg [email protected] zweimonatlich; jeweils im Februar, April, Juni, Wilfried Wacker Elsa-Brändström-Straße 6, 48565 Steinfurt [email protected] August, Oktober, Dezember Heinrich Weiß Eichenweg 3, A-3163 Rohrbach/Gölsen [email protected] Private Kleinanzeigen Uwe Wohlrab Calbesche-Straße. 4, 39218 Schönebeck kostenloser Service; Stephan Schurig, Äußere Bayreuther Straße 73a, D-90409 Nürnberg, Inserentenverzeichnis [email protected] Anzeigenleitung 3rd Planet . 26 Astrocom GmbH . 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