| Risultati della ricerca nelle immagini - "Kitt" |
APOLLO 14 AS 14 66-9344.jpgAS 14-66-9344 - Kitty Hawk (HR)84 visitenessun commento
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APOLLO_14_AS_14-66-9345_(HR).jpgAS 14-66-9345 (HR) - Looking for the Blue Flare... (20)59 visiteCaption NASA:"View of the CSM Kitty Hawk from the LM Antares during rendezvous".
MareKromium
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APOLLO_14_AS_14-66-9350_(HR).jpgAS 14-66-9350 (HR) - Looking for the Blue Flare... (21)69 visitenessun commentoMareKromium
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Cassiopeia_A-PIA11748.jpgSNR Cassiopeia "A"54 visiteFor the first time, a multiwavelength three-dimensional reconstruction of a SuperNova Remnant has been created. This stunning visualization of Cassiopeia A, or Cas A, the result of an explosion approximately 330 years ago, uses data from several telescopes: X-ray data from NASA's Chandra X-ray Observatory, InfraRed data from NASA's Spitzer Space Telescope and optical data from the National Optical Astronomy Observatory 4-meter telescope at Kitt Peak, Ariz., and the Michigan-Dartmouth-MIT 2.4-meter telescope, also at Kitt Peak. In this visualization, the green region is mostly Iron observed in X-rays. The yellow region is a combination of Argon and Silicon seen in X-rays, optical, and infrared — including jets of Silicon — plus outer debris seen in the optical. The red region is cold debris seen in the infrared. Finally, the blue reveals the outer blast wave, most prominently detected in X-rays.
Most of the material shown in this visualization is debris from the explosion that has been heated by a shock moving inwards. The red material interior to the yellow/orange ring has not yet encountered the inward moving shock and so has not yet been heated. These unshocked debris were known to exist because they absorb background radio light, but they were only recently discovered in infrared emission with Spitzer. The blue region is composed of gas surrounding the explosion that was heated when it was struck by the outgoing blast wave, as clearly seen in Chandra images.
To create this visualization, scientists took advantage of both a previously known phenomenon — the Doppler effect — and a new technology that bridges astronomy and medicine. When elements created inside a supernova, such as Iron, Silicon and Argon, are heated they emit light at certain wavelengths. Material moving towards the observer will have shorter wavelengths and material moving away will have longer wavelengths. Since the amount of the wavelength shift is related to the speed of motion, one can determine how fast the debris are moving in either direction.
Because Cas A is the result of an explosion, the stellar debris is expanding radially outwards from the explosion center. Using simple geometry, the scientists were able to construct a 3-D model using all of this information. A program called 3-D Slicer — modified for astronomical use by the Astronomical Medicine Project at Harvard University in Cambridge, Mass. — was used to display and manipulate the 3-D model. Commercial software was then used to create the 3-D fly-through.
The blue filaments defining the blast wave were not mapped using the Doppler Effect because they emit a different kind of light —synchrotron radiation — that does not emit light at discrete wavelengths, but rather in a broad continuum. The blue filaments are only a representation of the actual filaments observed at the blast wave.
This visualization shows that there are two main components to this supernova remnant: a spherical component in the outer parts of the remnant and a flattened (disk-like) component in the inner region. The spherical component consists of the outer layer of the star that exploded, probably made of helium and carbon. These layers drove a spherical blast wave into the diffuse gas surrounding the star.
The flattened component — that astronomers were unable to map into 3-D prior to these Spitzer observations — consists of the inner layers of the star. It is made from various heavier elements, not all shown in the visualization, such as Oxygen, Neon, Silicon, Sulphur, Argon and Iron.
High-velocity plumes, or jets, of this material are shooting out from the explosion in the plane of the disk-like component mentioned above. Plumes of Silicon appear in the North/East and South/West, while those of Iron are seen in the South/East and North. These jets were already known and Doppler velocity measurements have been made for these structures, but their orientation and position with respect to the rest of the debris field had never been mapped before now.
This new insight into the structure of Cas A gained from this 3-D visualization is important for astronomers who build models of supernova explosions. Now, they must consider that the outer layers of the star come off spherically, but the inner layers come out more disk-like with high-velocity jets in multiple directions.MareKromium
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NGC-4038_and_NGC-4039-0.jpgNGC 4038 and 4039 - The "Antennae Galaxies"54 visite"...Ars longa, Vita brevis (est)..."
(Seneca)
"...La via dell'Arte (intesa come Scienza e Conoscenza) è eterna; la Vita (invece) è breve..."
Nota: tutta la Vita di un Uomo che si dedichi alle Arti ed alla Scienza non basta perchè egli possa svolgere la sua opera ed il suo pensiero per intero. Come Faust cade sul libro non finito, altri lo riprenderà per continuarlo e quindi seguirà la stessa fine e così via...ad infinitum.
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Tempel1-PIA07881.jpgTempel-1, from Kitt Peak (pseudo-colors)59 visiteCaption NASA originale:"The Kitt Peak National Observatory's 2,1-meter telescope observed comet Tempel 1 on April 11, 2005, when the comet was near its closest approach to the Earth. A pinkish dust jet is visible to the SouthWest, with the broader neutral gas coma surrounding it. North is up, East is to the left and the field of view is about 80.000 Km wide. The Sun was almost directly behind the observer at this time. The red, green and blue bars in the background are stars that moved between the individual images.
This pseudo-color picture was created by combining three black and white images obtained with different filters. The images were obtained with the HB Narrowband Comet Filters, using CN (3870 A - shown in blue), C2 (5140 A - shown in green) and RC (7128 A - shown in red).
The CN and C2 filters capture different gas species (along with the underlying dust) while the RC filter captures just the dust".
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Tempel1-S-ImpactConfirmation.jpgTempel-1 from Kitt Peak National Obs.56 visiteOriginal caption:"The image was taken through an R band filter and has the smoothed dust light profile removed to enhance the jets. North is up, East to the left, the Sun at PA (Position Angle) 290 and the FOV is 2,5 arcmin (which is now 96.500 km at the comet)".
T. Farnham and Jianyang Li
(University of Maryland)
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The_Virgo_Galaxy_Cluster.jpgDiffuse lights inside the Virgo Cluster57 visite"...Qui sibi semitam non sapiunt, alteri mostrant viam..."
(Cicerone)
"...Coloro che non trovano la propria strada, indicano il cammino agli altri..."
Nota: una sentenza fortemente ironica e rivolta, si dice, agli indovini ed ai ciarlatani in genere che affollavano il Foro, il Circo e le case del volgo e, pur di mettere in tasca qualche moneta, si azzardavano a dare consigli e suggerimenti su materie delle quali non sapevano nulla. Un simile concetto venne ripreso, sebbene in un contesto diverso, dal Cantautore De Andrè il quale, nella ballata "Bocca di Rosa", dice "...Si sa che la gente dà buoni consigli, sentendosi come Gesù nel Tempio, si sa che la gente dà buoni consigli, se non può più dare il cattivo esempio...".
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as14-66-09345-00.JPGAS 14-66-9345 (1) - Under observation...85 visiteCaption NASA:"View of the CSM Kitty Hawk from the LM Antares during rendezvous".
Nota Lunexit: nell'inset (in alto a Dx) un extra-detail mgnf della Blue Flare che pare osservare da MOLTO vicino le operazioni di rendezvous tra CSM e LM.
Un piccolo suggerimento per tutti gli Amici appassionati della Blue Flare e delle sue controverse apparizioni. Noi riteniamo che la "genuinità" della Blue Flare (dato e premesso che esiste un quantitativo - ormai - impressionante di image artefacts simili ad essa) può essere determinata, con un discreto margine di approssimazione, anche attraverso la sottoposizione a stretch estremo del dettaglio controverso.
La Blue Flare "genuina", infatti, non solo NON si sgrana allorchè sottoposta ad anche elevate magnificazioni ma, inoltre, evidenzia il proprio "cuore": una sfera color bianco brillante la quale è - a nostro parere - difficile da spiegare ricorrendo al semplice image artefact - o vizio dell'immagine.
Questa Blue Flare, a nostro parere - e che vedrete ultra-stretchata nel frame che segue, a nostro parere è GENUINA e cioè NON E' un vizio del frame.
E, come sapete, dire che cosa una possibile Anomalìa "non è", è già molto...MareKromium
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as14-66-09350.JPGAS 14-66-9350 - The Kitty Hawk59 visiteCaption NASA:"View of the CSM Kitty Hawk from the LM Antares during rendezvous".MareKromium
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