File:Sirius A and B Hubble photo.jpg
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Sirius_A_and_B_Hubble_photo.jpg (369 × 403 pixel, dimensione del file: 179 KB, tipo MIME: image/jpeg)
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Dettagli
| Descrizione |
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 | |
| Fonte | http://www.spacetelescope.org/images/heic0516a/ |
| Autore | NASA, ESA, H. Bond (STScI), and M. Barstow (University of Leicester) |
| Altre versioni |
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Licenza
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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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| Annotazioni | Questa immagine è annotata: Vedi le annotazioni su Commons |
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| Data/Ora | Miniatura | Dimensioni | Utente | Commento | |
|---|---|---|---|---|---|
| attuale | 11:11, 19 ott 2019 | | 369 × 403 (179 KB) | 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 MB) | PlanetUser | higher resolution (modified from http://www.spacetelescope.org/static/archives/images/pl_original/heic0516a.tif) | |
| 21:39, 25 ago 2010 |  | 369 × 403 (179 KB) | LobStoR | progressive JPEG generated from .TIFF at quality setting 100 | |
| 00:06, 29 ago 2009 |  | 369 × 403 (143 KB) | 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 dic 2007 |  | 1 280 × 1 398 (160 KB) | DENker | higher quality | |
| 14:42, 25 dic 2005 |  | 369 × 403 (143 KB) | 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 |
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