Plik:Caldwell 43.jpg
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Opis
OpisCaldwell 43.jpg |
English: Hubble has allowed astronomers to view galaxies of all shapes and sizes from nearly every angle. When a galaxy is seen edge-on, the mesmerizing perspective reveals a dazzling slice of the universe. Caldwell 43, also known as the “Little Sombrero,” is one such galaxy.
Set against a speckled backdrop of more remote galaxies, Caldwell 43 features a bright central bulge, a thin disk full of dust, and a glowing halo of gas and stars that sprawls out into space. The Little Sombrero was first discovered by British astronomer William Herschel in 1784. The dusty spiral gets its nickname from the Sombrero galaxy (M104), which resembles a broad-rimmed Mexican hat and was discovered by the French astronomer Pierre Méchain just a few years earlier in 1781. Also viewed from its edge, the Sombrero galaxy is located just 28 million light-years away and looks larger than the Little Sombrero. In reality, they are nearly the same size. The Sombrero appears bigger because it is closer. With a magnitude of 10.5, the Little Sombrero is tougher to spot because it is farther away, at a distance of 40 million light-years from Earth. Also known as NGC 7814, the roughly 80,000-light-year-wide galaxy is billions of years old. Observers equipped with a telescope at least 7 inches in diameter will have the best luck spotting the galaxy, which resides in the constellation Pegasus. The dim, elongated galaxy is bright enough to be seen in moderately light-polluted skies. In the Northern Hemisphere, the autumn months provide the best opportunity to view Caldwell 43. In the Southern Hemisphere, look for it in the springtime. This image of Caldwell 43 is a combination of visible and infrared observations captured by Hubble’s Advanced Camera for Surveys in 2006. The observations were taken to assist astronomers in studying the galaxy’s stellar populations, and to help shed light on the evolution of this galaxy and others like it. For more information about Hubble’s observations of Caldwell 43, see: www.spacetelescope.org/images/potw1505a/ Credit: ESA/Hubble & NASA; Acknowledgment: Josh Barrington For Hubble's Caldwell catalog site and information on how to find these objects in the night sky, visit: www.nasa.gov/content/goddard/hubble-s-caldwell-catalog |
Data | |
Źródło | https://www.flickr.com/photos/144614754@N02/49201143797/ |
Autor | NASA Hubble |
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Ten plik, opublikowany pierwotnie w serwisie Flickr przez NASA Hubble pod adresem https://flickr.com/photos/144614754@N02/49201143797 (kopia archiwalna), został sprawdzony 23 lutego 2020 przez FlickreviewR 2, który potwierdził, że jest on tam dostępny na licencji cc-by-2.0. |
23 lutego 2020
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2 lut 2015
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4 440 462 bajt
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aktualny | 22:04, 23 lut 2020 | 4042 × 2009 (4,23 MB) | Killarnee | User created page with UploadWizard |
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Data i czas utworzenia oryginału | 10:00, 2 lut 2015 |
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Krótki tytuł | Dancing on the edge |
Dostawca | Credit: ESA/Hubble & NASAAcknowl |
Źródło | ESA/Hubble |
Tytuł lub opis obrazu | Galaxies can take many shapes and be oriented any way relative to us in the sky. This can make it hard to figure out their actual morphology, as a galaxy can look very different from different viewpoints. A special case is when we are lucky enough to observe a spiral galaxy directly from its edge, providing us with a spectacular view like the one seen in this picture of the week. This is NGC 7814, also known as the “Little Sombrero”. Its larger namesake the Sombrero Galaxy is another stunning example of an edge-on galaxy — in fact, the “Little Sombrero” is about the same size as its bright namesake at about 60 000 light-years across, but as it lies further away, it appears smaller in the sky. NGC 7814 has a bright central bulge and a bright halo of glowing gas extending outwards into space. The dusty spiral arms appear as dark streaks. they consist of dusty material that absorbs and blocks light from the galactic centre behind it. The field of view of this NASA/ESA Hubble Space Telescope image would be very impressive even without NGC 7814 in front; nearly all the objects seen in this image are galaxies as well. A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Josh Barrington. Links Josh Barrington’s Hidden Treasures entry on Flickr |
Wydawca | ESA/Hubble |
Warunki wykorzystania |
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Komentarz pliku JPEG | Galaxies can take many shapes and be oriented any way relative to us in the sky. This can make it hard to figure out their actual morphology, as a galaxy can look very different from different viewpoints. A special case is when we are lucky enough to observe a spiral galaxy directly from its edge, providing us with a spectacular view like the one seen in this picture of the week. This is NGC 7814, also known as the “Little Sombrero”. Its larger namesake the Sombrero Galaxy is another stunning example of an edge-on galaxy — in fact, the “Little Sombrero” is about the same size as its bright namesake at about 60 000 light-years across, but as it lies further away, it appears smaller in the sky. NGC 7814 has a bright central bulge and a bright halo of glowing gas extending outwards into space. The dusty spiral arms appear as dark streaks. they consist of dusty material that absorbs and blocks light from the galactic centre behind it. The field of view of this NASA/ESA Hubble Space Telescope image would be very impressive even without NGC 7814 in front; nearly all the objects seen in this image are galaxies as well. A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Josh Barrington. Links Josh Barrington’s Hidden Treasures entry on Flickr |
Orientacja obrazu | normalna |
Rozdzielczość w poziomie | 72 punktów na cal |
Rozdzielczość w pionie | 72 punktów na cal |
Użyte oprogramowanie | Adobe Photoshop CC 2014 (Windows) |
Data i czas modyfikacji pliku | 17:57, 3 wrz 2014 |
Rozmieszczenie Y i C | Wyśrodkowane |
Wersja standardu Exif | 2.31 |
Data i czas zeskanowania | 18:55, 28 sie 2014 |
Znaczenie składowych |
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Obsługiwana wersja Flashpix | 1 |
Przestrzeń kolorów | Nie skalibrowano |
Wersja IIM | 4 |
Słowa kluczowe | NGC 7814 |
Bitów na próbkę |
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Wysokość | 2009 px |
Szerokość | 4042 px |
Interpretacja fotometryczna | RGB |
Próbek na piksel | 3 |
Kontakt |
http://www.spacetelescope.org/ Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
Typ utworu | Observation |
Data ostatniej modyfikacji metadanych | 19:57, 3 wrz 2014 |
Unikalny identyfikator oryginalnego dokumentu | xmp.did:2c92fa5b-6894-094c-8ecc-8fbf283d67ad |