| Ultimi arrivi - Titan: The "Foggy" Moon |
Titan_and_Tethys-N00048632.jpgDancing in the dark: Tethys and Titan56 visitenessun commentoGen 23, 2006
|
|
Titan-W00013114.jpgThe first clouds of the New "Titan" Year56 visiteOriginal caption:"W00013114.jpg was taken on January 15, 2006 and received on Earth January 16, 2006. The camera was pointing toward Titan that, at the time, was approximately 25.495 Km away, and the image was taken using the CB3 and CL2 filters.
This image has not been validated or calibrated".Gen 20, 2006
|
|
Titan-IMG001935-br500.jpgTitan during Fly-By n. 9 (Original NASA/JPL/SSI RAW b/w Frame)59 visiteOriginal caption:"This image was taken on December 26, 2005 and received on Earth December 27, 2005. The camera was pointing toward TITAN that, at the time, was approximately 57.509 Km (about 35.734 miles) away.
This image was taken using the CB3 and CL2 filters and has not been validated or calibrated".Dic 28, 2005
|
|
Titan-W00012609.jpgHidden Land, strange "clouds"...69 visiteOriginal caption:"W00012609.jpg was taken on December 26, 2005 and received on Earth December 27, 2005. The camera was pointing toward TITAN at approximately 38,016 kilometers away, and the image was taken using the CB3 and CL2 filters. This image has not been validated or calibrated".Dic 28, 2005
|
|
Titan-W00012695.jpgTitans... (2)54 visiteOriginal caption:"W00012695.jpg was taken on December 26, 2005 and received on Earth December 27, 2005. The camera was pointing toward TITAN that, at the time, was approximately 25.404 Km away.
Te image was taken using the CL1 and RED filters".Dic 28, 2005
|
|
Titan-W00012686.jpgTitans... (1)56 visiteOriginal caption:"W00012686.jpg was taken on December 26, 2005 and received on Earth December 27, 2005. The camera was pointing toward TITAN that, at the time, was approximately 23.945 Km away
The image was taken using the CL1 and RED filters".Dic 28, 2005
|
|
Titan-PIA07774.jpgCrescent Titan55 visiteWith its thick, distended atmosphere, Titan's orange globe shines softly, encircled by a thin halo of purple light-scattering haze. Images taken using blue, green and red spectral filters were used to create this enhanced-color view; the color images were combined with an ultraviolet view that makes the high-altitude, detached layer of haze visible.
The ultraviolet part of the composite image was given a purplish hue to match the bluish-purple color of the upper atmospheric haze seen in visible light.
Small particles that populate high hazes in Titan's atmosphere scatter short wavelengths more efficiently than longer visible or infrared wavelengths, so the best possible observations of the detached layer are made in ultraviolet light.
The images in this view were taken by the Cassini narrow-angle camera on May 5, 2005, at a distance of approx. 1,4 MKM (about 900.000 miles) from Titan and at a phase angle of 137°.
Image scale is 8 Km (5 miles) per pixel.Dic 23, 2005
|
|
Titan_and_Dione-PIA07644.jpgTitan & Co.57 visiteOriginal caption:"In a rare moment, the Cassini spacecraft captured this enduring portrait of a near-alignment of four of Saturn's restless moons. Timing is critical when trying to capture a view of multiple bodies, like this one. All four of the moons seen here were on the far side of the Rings from the spacecraft when this image was taken; and about an hour later, all four had disappeared behind Saturn.
Seen here are Titan (5.150 Km, or 3.200 miles across) and Dione (1.126 Km, or 700 miles across) at bottom; Prometheus (102 Km, or 63 miles across) hugs the Rings at center; Telesto (24 Km, or 15 miles across) is a mere speck in the darkness above center.
The image was taken in visible light with the Cassini narrow-angle camera on Oct. 17, 2005 at a distance of approx. 3,4 MKM (2,1 MMs) from Dione and 2,5 MKM (about 1,6 MMs) from Titan. The image scale is 16 Km (10 miles) per pixel on Dione and 21 Km (about 13 miles) per pixel on Titan".Dic 02, 2005
|
|
Titan-Surface-33-PIA06440.jpgThe surface of Titan (again)58 visiteOriginal caption:"Images from the European Space Agency's Huygens probe descent imager/spectral radiometer side-looking imager and from the medium resolution imager, acquired after landing, were merged to produce this image.
The horizon's position implies a pitch of the imager/spectral radiometer, nose-upward, by 1 to 2° with no measurable roll. The "stones" (?) in the foreground are 4 to 6" (10 to 15 cm) in size, presumably made of water ice and these lie on a darker, finer-grained substrate.
A region with a relatively low number of rocks lies between clusters of rocks in the foreground and the background and matches the general orientation of channel-like features in the panorama of PIA06439.
The scene evokes the possibility of a dry lakebed".Dic 02, 2005
|
|
Titan-Huygens_Landing_Site-01-PIA06435.jpgHuygens' Landing Site (true colors)57 visiteOriginal caption:"This frame is (...) a composite of Cassini imaging science sub-system images, radar images and visual and infrared mapping spectrometer images of the Huygens probe landing area.
(...) It displays the Titan surface in true color.
(...) The probe was delivered to Titan by the Cassini spacecraft, which is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif. NASA supplied two instruments on the probe: the descent imager/spectral radiometer and the gas chromatograph mass spectrometer".Dic 02, 2005
|
|
Titan-Regions-Fensal_and_Aztlan_Region-PIA07634.jpgFensal-Aztlan Region56 visiteOriginal caption:"The H-shaped region Fensal-Aztlan is faintly visible on Saturn's murky moon Titan in this enhanced clear-filter view from Cassini.
While most of the light passing through the clear filters is visible light, a small portion of the light is in the treasured infrared windows that allow views down to the moon's frigid surface (nota: la NASA persiste nel definire Titano come un mondo "gelido". Forse è vero - a logica diremmo di si - ma i dati che possediamo non autorizzano ancora tale conclusione la quale, ovviamente, è ad oggi solo speculativa).
At the upper left, dark wavelike features in the atmosphere encircle the moon's North Pole.
The view shows principally the Saturn-facing Hemisphere on Titan; North is up and rotated 35° to the left.
The image was taken with the Cassini spacecraft narrow-angle camera on Oct. 7, 2005, at a distance of approximately 2,4 MKM (about 1,5 MMs) from Titan and at a phase angle of 33°. The image scale is 14 Km (about 9 miles) per pixel".Nov 18, 2005
|
|
Titan-PIA07626.jpgThe "haze" of Titan59 visiteOriginal caption:"Looking back toward the sun brings out the thin haze that hovers 500 Km (310 miles) above Saturn's moon Titan.
The haze is composed of small particles whose diameter is comparable to the wavelength of light, which is ultraviolet light centered at 338 nnmts. Particles of this scale scatter sunlight most effectively in the direction opposite to the direction of sunlight itself.
Scientists are still trying to understand what processes produce this thin, high-altitude haze layer.
Picture data: North on Titan is up and tilted 10° to the right. The image was taken with the Cassini spacecraft narrow-angle camera on Sept. 24, 2005, at a distance of approx. 917.000 Km (about 570.000 miles) from Titan and at a Sun-Titan-spacecraft angle of 145°. Image scale is 5 Km (about 3 miles) per pixel".Nov 09, 2005
|
|
| 426 immagini su 36 pagina(e) |
 |
|
|
|
|
27 | |
|
|
|
|
