Fájl:25 years of stunning definition Messier 100.jpg

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Leírás	English: This stunning spiral galaxy is Messier 100 in the constellation Coma Berenices, captured here by the NASA/ESA Hubble Space Telescope — not for the first time. Among Hubble’s most striking images of Messier 100 are a pair taken just over a month apart, before and after Servicing Mission 1, which took place 25 years ago in December 1993. After Hubble was launched, the astronomers and engineers operating the telescope found that the images it returned were fuzzy, as if it were out of focus. In fact, that was exactly what was happening. Hubble’s primary mirror functions like a satellite dish; its curved surface reflects all the light falling on it to a single focal point. However, the mirror suffered from a defect known as a spherical aberration, meaning that the light striking the edges of the mirror was not travelling to the same point as the light from the centre. The result was blurry, unfocused images. To correct this fault, a team of seven astronauts undertook the first Servicing Mission in December 1993. They installed a device named COSTAR (Corrective Optics Space Telescope Axial Replacement) on Hubble, which took account of this flaw of the mirror and allowed the scientific instruments to correct the images they received. The difference between the photos taken of Messier 100 before and after shows the remarkable effect this had, and the dramatic increase in image quality. COSTAR was in place on Hubble until Servicing Mission 4, by which time all the original instruments had been replaced. All subsequent instrumentation had corrective optics built in. This new image of Messier 100 taken with Hubble’s Wide Field Camera 3 (WFC3), demonstrates how much better the latest generation of instruments is compared to the ones installed in Hubble after its launch and after Servicing Mission 1.
Dátum	2018. december 10., 06:00:00
Forrás	https://www.spacetelescope.org/images/potw1850a/
Szerző	NASA, ESA

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aktuális	2018. december 10., 10:25		3 679 × 3 645 (5,67 MB)	Jmencisom	User created page with UploadWizard

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Hubble űrtávcső

Globális fájlhasználat

A következő wikik használják ezt a fájlt:

Használata itt: de.wikipedia.org
- Messier 100
Használata itt: en.wikipedia.org
- Coma Berenices
Használata itt: et.wikipedia.org
- Messier 100
Használata itt: fr.wikipedia.org
Használata itt: it.wikipedia.org
- Galassia a spirale grand design
Használata itt: www.wikidata.org
- Q123331674

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Köszönet/Készítő	NASA, ESA
Forrás	ESA/Hubble
Rövid cím	25 years of stunning definition
Kép címe	This stunning spiral galaxy is Messier 100 in the constellation Coma Berenices, captured here by the NASA/ESA Hubble Space Telescope — not for the first time. Among Hubble’s most striking images of Messier 100 are a pair taken just over a month apart, before and after Servicing Mission 1, which took place 25 years ago in December 1993. After Hubble was launched, the astronomers and engineers operating the telescope found that the images it returned were fuzzy, as if it were out of focus. In fact, that was exactly what was happening. Hubble’s primary mirror functions like a satellite dish; its curved surface reflects all the light falling on it to a single focal point. However, the mirror suffered from a defect known as a spherical aberration, meaning that the light striking the edges of the mirror was not travelling to the same point as the light from the centre. The result was blurry, unfocused images. To correct this fault, a team of seven astronauts undertook the first Servicing Mission in December 1993. They installed a device named COSTAR (Corrective Optics Space Telescope Axial Replacement) on Hubble, which took account of this flaw of the mirror and allowed the scientific instruments to correct the images they received. The difference between the photos taken of Messier 100 before and after shows the remarkable effect this had, and the dramatic increase in image quality. COSTAR was in place on Hubble until Servicing Mission 4, by which time all the original instruments had been replaced. All subsequent instrumentation had corrective optics built in. This new image of Messier 100 taken with Hubble’s Wide Field Camera 3 (WFC3), demonstrates how much better the latest generation of instruments is compared to the ones installed in Hubble after its launch and after Servicing Mission 1. Links Messier 100 shows improvements of Hubble Messier 100 seen 1993 with WFPC1 Messier 100 seen 1994 with WFPC2
Felhasználási feltételek	Creative Commons Attribution 4.0 International License
EXIF információ létrehozásának dátuma	2018. december 10., 06:00
Használt szoftver	Adobe Photoshop CC 2018 (Windows)
Utolsó változtatás ideje	2018. november 27., 17:02
Digitalizálás dátuma és időpontja	2018. október 18., 13:53
Dátum metaadat utolsó módosítása	2018. november 27., 18:02
Eredeti dokumentum egyedi azonosítója	xmp.did:5517f5c8-64e4-104e-8c2c-f62292a85b80
Kulcsszavak	M 100
Elérhetőségi adatok	http://www.spacetelescope.org Karl-Schwarzschild-Strasse 2 Garching bei München, None, D-85748 Germany
IIM-verzió	4

Fájl:25 years of stunning definition Messier 100.jpg

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10. december 2018

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