Fitxer:Sirius A and B Hubble photo.jpg

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Sirius_A_and_B_Hubble_photo.jpg ‎(369 × 403 píxels, mida del fitxer: 179 Ko, tipus MIME: image/jpeg)

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Resum

DescripcióSirius A and B Hubble photo.jpg	English: This Hubble Space Telescope image shows Sirius A, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B. Astronomers overexposed the image of Sirius A [at centre] so that the dim Sirius B [tiny dot at lower left] could be seen. The cross-shaped diffraction spikes and concentric rings around A*, and the small ring around Sirius B, are artifacts produced within the telescope's imaging system. The two stars revolve around each other every 50 years. Sirius A, only 8.6 light-years from Earth, is the fifth closest star system known. The image was taken with Hubble's Wide Field Planetary Camera 2.
Data	13 de desembre de 2005, 15:00:00
Font	http://www.spacetelescope.org/images/heic0516a/
Autor	NASA, ESA, H. Bond (STScI), and M. Barstow (University of Leicester)
Altres versions	derivative derivative 80px square for template Placed pointer to Sirius B

Llicència

This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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Historial del fitxer

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	Data/hora	Dimensions	Usuari/a	Comentari
actual	11:11, 19 oct 2019	369 × 403 (179 Ko)	BevinKacon	Reverted to version as of 19:39, 25 August 2010 (UTC) actual size from source
	08:26, 22 gen 2016	2.209 × 2.410 (1,43 Mo)	PlanetUser	higher resolution (modified from http://www.spacetelescope.org/static/archives/images/pl_original/heic0516a.tif)
	21:39, 25 ago 2010	369 × 403 (179 Ko)	LobStoR	progressive JPEG generated from .TIFF at quality setting 100
	00:06, 29 ago 2009	369 × 403 (143 Ko)	Tryphon	Reverted to version as of 12:42, 25 December 2005: original size; anything bigger is just blown-up from this image.
	20:34, 12 des 2007	1.280 × 1.398 (160 Ko)	DENker	higher quality
	14:42, 25 des 2005	369 × 403 (143 Ko)	Superborsuk	The image of Sirius A and white dwarf Sirius B taken by Hubble Space Telescope. Source: http://hubblesite.org/newscenter/newsdesk/archive/releases/2005/36/image/a