Dokumente & Ressourchen - Suchergebnisse
Suchergebnisse
Waage-Sternbildkarte
Bild
Unterschrift: Das Sternbild Waage mit seinen hellen Sternen und den umliegenden Sternbildern. Die Waage ist im Uhrzeigersinn von oben gehend umgeben von dem Kopf der Schlange, Jungfrau, Wasserschlange, Zentaur, Wolf, Skorpion und Schlangenträger. Die Waage liegt auf der Ekliptik (hier als blaue Linie dargestellt), das ist der Weg, den die Sonne im Laufe eines Jahres über den Himmel zu nehmen scheint. Die Sonne befindet sich von Ende Oktober bis Ende November in der Waage. Die anderen Planeten des Sonnensystems sind oft in der Waage zu finden.
Die Waage liegt knapp südlich des Himmelsäquators und ist daher in allen Regionen mit Ausnahme der arktischsten im Laufe des Jahres irgendwann einmal sichtbar. Am besten zu sehen ist die Waage abends auf der Nordhalbkugel im späten Frühling/Frühsommer und auf der Südhalbkugel im Spätherbst/Frühwinter.
Die y-Achse dieses Diagramms ist in Deklinationsgraden mit Norden nach oben und die x-Achse in Stunden der Rektaszension mit Osten nach links. Die Größe der hier markierten Sterne bezieht sich auf die scheinbare Helligkeit des Sterns. Je größer die Punkte, desto heller scheinen die Sterne die sie darstellen. Die griechischen Buchstaben kennzeichnen die hellsten Sterne des Sternbildes. Diese sind nach Helligkeit geordnet, wobei der hellste Stern mit Alpha, der zweithellste mit Beta usw. bezeichnet wird, obwohl diese Reihenfolge nicht immer genau eingehalten wird. Die gepunkteten Begrenzungslinien markieren die IAU-Grenzen der Sternbilder und die durchgezogenen grünen Linien markieren eine der üblichen Formen, die zur Darstellung der Sternbilder verwendet werden. Weder die Sternbildgrenzen, noch die Linie, die die Ekliptik markiert, noch die Linien, die die Sterne verbinden, sind am Himmel sichtbar.
Bild: Angepasst vom IAU Office of Astronomy for Education nach dem Original von IAU/Sky & Telescope
Link zur Quelle
Glossar-Begriffe:
Scheinbare Helligkeit , Himmelskoordinaten , Sternbild , Deklination , Ekliptik , Waage , Rektaszension (RA) , Skorpion , Tierkreis , Jungfrau
Kategorien:
Astronomie mit bloßem Auge
Lizenz: Creative Commons Namensnennung 4.0 International (CC BY 4.0) Creative Commons Namensnennung 4.0 International (CC BY 4.0) Symbole
Datei
( Bild
104.23 kB)
PDF-Datei
(PDF file
196.85 kB)
Hydra Constellation Map
Bild
Unterschrift: The constellation Hydra with its bright stars and surrounding constellations. Hydra is surrounded by (going clockwise from the top): Leo, Cancer, Canis Minor, Monoceros, Puppis, Pyxis, Antlia, Centaurus, Lupus, Libra, Virgo, Corvus, Crater and Sextans.
Hydra is a large constellation that covers over a quarter of the celestial sphere in right ascension. It also spans the celestial equator and thus part of the constellation is visible from everywhere on the Earth at some point in the year. All parts of the constellation are visible at some point for all but the most antarctic parts of the southern hemisphere and to equatorial and most temperate regions of the northern hemisphere. However the wide span of the constellation means that all of it may not be visible at the same time in many of these regions. Hydra is best viewed in the northern hemisphere spring and southern hemisphere autumn.
The famous spiral galaxy M83, also known as the Pinwheel Galaxy, lies in Hydra. It is marked here with a red ellipse. The planetary nebula NGC 3242 can also be found in Hydra. It is marked here with a green circle with a plus sign superimposed on it. The open cluster M48 is marked here with a yellow circle while the globular cluster M68 is marked with a yellow circle with a plus sign superimposed on it.
The y-axis of this diagram is in degrees of declination with north as up and the x-axis is in hours of right ascension with east to the left. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. The blue line on the diagram marks the ecliptic. Neither the constellation boundaries, nor the line marking the ecliptic, nor the lines joining the stars appear on the sky.
Bild: Adapted by the IAU Office of Astronomy for Education from the original by the IAU and Sky & Telescope
Link zur Quelle
Glossar-Begriffe:
Scheinbare Helligkeit , Himmelskoordinaten , Sternbild , Deklination , Ekliptik , Kugelsternhaufen , Waage , Planetarischer Nebel , Rektaszension (RA) , Spiralgalaxie , Krebs , Offener Sternhaufen , Jungfrau
Kategorien:
Astronomie mit bloßem Auge
Lizenz: Creative Commons Namensnennung 4.0 International (CC BY 4.0) Creative Commons Namensnennung 4.0 International (CC BY 4.0) Symbole
Datei
( Bild
114.60 kB)
PDF-Datei
(PDF file
253.49 kB)
Centaurus Constellation Map
Bild
Unterschrift: The constellation Centaurus with its bright stars and surrounding constellations. Centaurus is surrounded by (going clockwise from the top): Hydra, Antlia, Vela, Carina, Musca, Crux, Circinus, Lupus and Libra. Centaurus is a large constellation most notable for its brightest star Alpha Centauri. Alpha Centauri is a triple star system and is the nearest star system to the Solar System. When viewed with the naked eye, the two brightest components of Alpha Centauri appear as one star. The combined light from these two stars makes Alpha Centauri appear as the third brightest star in the night sky. The third component of the Alpha Centauri system Proxima Centauri, the nearest star to the Sun, is too faint to be viewed with the naked eye.
Centaurus is a southern constellation and thus the whole constellation is visible from the southern hemisphere at some point in the year. The whole constellation is also visible from equatorial regions of the northern hemisphere with parts of the constellation visible from temperate northern regions. The constellation is best viewed in the evening in the late northern hemisphere spring and late southern hemisphere autumn.
The globular cluster Omega Centauri, also known as NGC 5319, lies in Centaurus. Bright enough to be seen with the naked eye, this cluster was initially given a designation as a star in the constellation before its true nature was realised. It is marked here with a yellow circle with a plus sign superimposed on it. As is the globular cluster NGC 5286. The open cluster NGC 3766 is marked here with a yellow circle. NGC 5128, also known as Centaurus A, is the closest active galaxy to Earth. The supermassive black hole at the heart of this galaxy has launched two huge jets of matter which emit in many different wavelengths including x-ray and radio emission. NGC 5128 is marked with a red ellipse here, as is the edge-on spiral galaxy NGC 4945.
The y-axis of this diagram is in degrees of declination with north as up and the x-axis is in hours of right ascension with east to the left. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. The blue line in the top left is the ecliptic. Neither the constellation boundaries, nor the line marking the ecliptic, nor the lines joining the stars appear on the sky.
Bild: Adapted by the IAU Office of Astronomy for Education from the original by the IAU and Sky & Telescope
Link zur Quelle
Glossar-Begriffe:
Scheinbare Helligkeit , Himmelskoordinaten , Sternbild , Deklination , Kugelsternhaufen , Rektaszension (RA) , Offener Sternhaufen , Alpha Centauri
Kategorien:
Astronomie mit bloßem Auge
Lizenz: Creative Commons Namensnennung 4.0 International (CC BY 4.0) Creative Commons Namensnennung 4.0 International (CC BY 4.0) Symbole
Datei
( Bild
152.88 kB)
PDF-Datei
(PDF file
255.96 kB)
