| Piú votate - Mars through Mars Express (ESA - Original Raw Frames & Orbital Panoramas) |
Volcanoes-Olympus_Mons-PCF-LXTT.jpgOlympus Mons and Surroundings (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)61 visiteUna nostra elaborazione Multispettrale del maestoso Vulcano Olympus, ottenuta da un frame HR proveniente dalla Sonda ESA "Mars Express".
Caption ESA:"This is a mosaic of Olympus Mons, the highest volcano on Mars, which towers 26 Km above the surrounding plains. The image covers an area of approx. 600.000 sq/km.
The High Resolution Stereo Camera (HRSC) on board ESA’s Mars Express Orbiter imaged the Region over 18 orbits.
This image is an ortho-image mosaic, where the projecting rays are perpendicular to the plane of projection.
This corrects any deformations introduced by an imaging camera and therefore such an image can be fitted directly on to a map.
From the observations, 16 HRSC orbit strips, with around 35 Gigabytes of data were used to generate a Digital Terrain Model (DTM) mosaic and an ortho-image mosaic. The DTM mosaic has a resolution of 150 mt/pixel. The resolution of individual nadir images (taken by pointing the camera vertically down to the surface) is in the range of 12 to 40 mt/pixel. Individual terrain models with a resolution of up to 50 mt were derived for every HRSC image strip.
The HR DTMs and ortho-images are derived through a complex process. Matching surface features were used to 'stitch' the images strips together, and complex geometrical calculations were used to produce the 3D coordinates of all measured points in the area".MareKromium
(15 voti)
|
|
Craters-Unnamed_Double_Crater_in_Terra_Tyrrhena.jpgDouble Impact Crater in Terra Tyrrhena (Natural Colors + MULTISPECTRUM; credits: ESA & Lunexit)60 visiteThe High Resolution Stereo Camera (HRSC), ESA’s Mars Express obtained images of the Tyrrhena Terra Impact Region on Mars.
On 10 May 2007, the spacecraft was in orbit number 4294 when it snapped pictures of the Region located at 18° South Lat. and 99° East Long. with a ground resolution of approximately 15 metres per pixel.
The Western part of the scene is dominated by a 35 Km-wide and approx. 1000 mt-deep impact crater with an extremely cliffy and chiseled edge. Another, 18 Km-long and approx. 750 mt-deep impact crater, in all likelihood a ‘double impact crater’, is located South of the large crater.
These 'double impact craters' develop when two objects, part of a binary, hit the surface almost simultaneously.MareKromium
(12 voti)
|
|
Volcanoes-Arsia_Mons-Eruption-04.jpgArsia Mons is erupting? (Processed Natural Colors; credits for the additional process. and color.: Dr Marco Faccin - Lunexit Team)107 visitenessun commentoMareKromium
(11 voti)
|
|
Chasmas-Tithonium_Chasma-2-121-221004-0442-6-co-01.jpgTithonium Chasma - Valles Marineris137 visiteCaption ESA originale:"This image shows the western end of the canyons Tithonium Chasma and Ius Chasma, part of the Valles Marineris canyon system, which are up to 5,5 Km deep.
The image was taken on 26 May 2004 during orbit 442 with a ground resolution of approximately 52 metres per pixel. The displayed region is located at the beginning of the canyon system at about latitude 7° South and longitude 269° East. North is to the left".
(11 voti)
|
|
Volcanoes-Arsia_Mons-Eruption-06.gifArsia Mons is erupting? (a GIF-Movie in processed Natural Colors by Dr Marco Faccin - Lunexit Team)72 visiteSolo un'annotazione "tecnica": notate come l'Atmosfera di Marte (tutt'altro che impercettibile ed ultra-sottile...) si evidenzia sul bordo del Pianeta colorandosi, di fotogramma in fotogramma, dello stesso colore della Dominante propria del Filtro impiegato.
Un altro straordinario Lavoro del nostro Marco Faccin, che ringraziamo di Cuore!MareKromium
(10 voti)
|
|
Volcanoes-Arsia_Mons-Eruption-02.jpgArsia Mons is erupting? (ALL available frames - a Photo-Mosaic by Dr Marco Faccin - Lunexit Team)61 visitenessun commentoMareKromium
(9 voti)
|
|
Volcanoes-Arsia_Mons-Eruption-05.jpgArsia Mons is erupting? (RAW Natural Colors; credits for the additional process. and color.: Dr Marco Faccin - Lunexit Team)61 visitenessun commentoMareKromium
(9 voti)
|
|
Craters-Terby_Crater.jpgTerby Crater (Natural Colors + MULTISPECTRUM; credits: ESA & Lunexit)60 visiteThe High Resolution Stereo Camera (HRSC) on board ESA’s Mars Express Orbiter imaged the Terby Crater on Mars on 13 April 2007 during orbit 4199.
The Region is of great scientific interest as sediments there hold information on the role of water in the history of the Planet. Eye-catching finger-shaped plateaux extend in the North-South direction. They rise up to 2000 mt above the surrounding terrain. The relatively old crater was filled with sediments in the past, which formed plateaux on erosion.
The flanks of the plateaux clearly exhibit layering of different-coloured material. Differences in colour usually indicate changes in the composition of the material and such layering is called ‘bedding’. Bedding structures are typical of sedimentary rock, which has been deposited either by wind or water. Different rock layers erode differently, forming terraces.
The valleys exhibit gullies, or channels cut in the ground by running liquid, mainly in the Northern part of the image.
These gullies and the rock-bedding structure indicate that the region has been affected by water.
MareKromium
(9 voti)
|
|
Volcanoes-Arsia_Mons-Eruption-00.jpgArsia Mons is erupting?121 visiteIn data 2 Luglio 2009, sono state ottenute (dalla Sonda ESA "Mars Express") una serie di immagini che SEMBRANO essere la prova visibile della verificazione di un fenomeno vulcanico tutt'altro che residuale nella Provincia Marziana di Tharsis: una nube piuttosto chiara, ma molto densa e compatta (oltre che di dimensioni davvero imponenti - ne stimiamo la lunghezza intorno ai 400/450 Km), pare infatti provenire dal Vulcano Arsia Mons.
La qualità delle immagini ESA (scattate lungo l'arco di circa 30 minuti) è - come sempre... - scarsa e quindi, se non altro per il momento, ci limitiamo a pubblicare l'immagine più significativa (ed in Natural Colors), nel contesto di un piccolo collage il quale Vi sarà di aiuto per capire non solo la possibile origine dello sfogo, ma anche le sue attuali dimensioni (calcolabili agevolmente, una volta tenutosi conto che la caldera di Arsia Mons ha un diametro di circa 110 Km).
Attendiamo le Vostre opinioni ed i Vostri commenti (speculazioni incluse)!MareKromium
(8 voti)
|
|
Craters-Crommelin_Crater-PCF-LXTT.jpgCrommelin Crater (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)64 visiteCoord.: 5,1° North Lat. and 349,8° East Long.MareKromium
(8 voti)
|
|
Craters-Pollack_Crater-H1201_0001_ND3_crop_wide-3.jpgPollack Crater and "White Rock" (Natural Colors - Tri-Chromatic Version; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)58 visitenessun commentoMareKromium
(8 voti)
|
|
Craters-Lauth_Crater_in_Vastitas_Borealis_Region-Frozen_Lake-W-212-010705-1343-6-3d-01-03.jpgThe misterious "Frozen Lake" of Vastitas Borealis (4 - Extremely Enhanced Natural Colors; credits for the additional process. and color.: Lunar Explorer Italia)59 visitePiena Estate Polare Marziana: polveri rosse ricoprono il cratere senza nome di Vastitas Borealis e colorano, in parte, il suo "laghetto" centrale.
Da notare che, in accordo alle nostre assunzioni di partenza (ed in accordo a regole elementari di logica e di buon senso), un cielo ricco di polveri color arancio, gialle e rossastre (e dunque, di conseguenza, un cielo color rosso/arancio e giallo - di base) si dovrebbe adeguatamente riflettere con questi medesimi colori nelle acque - a questo punto ghiacciate o meno diventa indifferente - del lago di Vastitas.
Ebbene, la regola elementare per cui le acque e/o i ghiacci superficiali, "usualmente", riflettono il colore del cielo, nel frame ESA Originale (fateci caso!) diremmo che NON trova applicazione.
Come mai? Forse abbiamo sbagliato noi...O forse l'immagine ESA è un'mmagine bella ma fasulla? O forse i suoi colori sono stati taroccati (male)?
O magari essa è frutto di incompetenza?
Oppure - chissà... - l'immagine ESA di partenza è un mix di tutte e tre le possibili (e summenzionate) variabili... Decidetelo Voi.MareKromium
(8 voti)
|
|
| 106 immagini su 9 pagina(e) |
1 |
 |
|
|
|
|
|
|
