Saturn: the "Ringed Beauty" and His Moons
|
|
|
Japetus-N00042823.jpgApproaching Japetus67 visiteOriginal caption:"N00042823.jpg was taken on November 08, 2005 and received on Earth November 09, 2005. The camera was pointing toward IAPETUS at approx. 774,151 Km away, and the image was taken using the CL1 and IR3 filters".
|
|
Japetus-N00042846.jpgApproaching Japetus53 visiteOriginal caption:"N00042846.jpg was taken on November 09, 2005 and received on Earth November 10, 2005. The camera was pointing toward Japetus at approx. 639.972 Km away, and the image was taken using the IR2 and CL2 filters. This image has not been validated or calibrated".
|
|
Japetus-N00042866.jpgApproaching Japetus54 visiteOriginal caption:"N00042866.jpg was taken on Nov. 11, 2005 and received on Earth Nov. 11, 2005. The camera was pointing toward Japetus at approx. 480.263 Km away and the image was taken using the CL1 and GRN filters".
Purtroppo, alla fine di questo passaggio (solo relativamente) ravvicinato, non avremo la possibilità di scrutare ancora nelle valli e dentro i crepacci di questa luna divisa a metà: una metà che ci ricorda, in tutto e per tutte, le altre lune del Sistema di Saturno ed i corpi celesti rocciosi "tipici" dello Spazio Esterno (o trans-Marziano). Un'altra metà, invece, completamente aliena, diversa e difficile da spiegare: una metà di Giapeto, infatti, è nera. Che si tratti di depositi di polveri è solo una speculazione e qualora si trattasse effettivamente di polveri, verrebbe naturale domandarsi "da dove" queste polveri provengano.
Ciò che sappiamo, oggi, è che Giapeto è un Corpo Celeste "bifronte" e, forse, dalla doppia natura: tutto il resto (e che NASA ed ESA ci perdonino) è "jargon"...
|
|
Japetus-N00042868.jpgApproaching Japetus (over-exposed)53 visiteOriginal caption:"N00042868.jpg was taken on November 11, 2005 and received on Earth November 11, 2005. The camera was pointing toward Japetus at approx. 480.167 Km away, and the image was taken using the CL1 and CL2 filters".
Nota: una stella si "allunga" (non si tratta di un raggio cosmico nè di un UFO in transito) e Giapeto, da nero o quasi, diventa di un bel color bianco brillante. Alcuni dettagli emergono dall'oscurità, altri annegano nella luce.
Ma non c'è nessun mistero: questi particolari sono solo i segni evidenti di un'immagine ottenuta allungando i tempi di esposizione.
|
|
Japetus-N00043065.jpgLand of night53 visiteOriginal caption:"N00043065.jpg was taken on November 14, 2005 and received on Earth November 15, 2005. The camera was pointing toward Japetus at approximately 554.430 Km away, and the image was taken using the P60 and MT2 filters. This image has not been validated or calibrated".
Nota: questa immagine ci offre, oltre ad una "inquietante" (e comunque davvero molto bella) veduta di Giapeto, anche un interessante ed assai variegato campionario di photographic artifacts (incluse anche alcune strisce di luce che vengono ufficialmente attribuite al transito di Raggi Cosmici).
|
|
Japetus-N00043073.jpgJapetus...in a very unusual "look"!53 visiteOriginal caption:"N00043073.jpg was taken on November 03, 2005 and received on Earth November 05, 2005. The camera was pointing toward Japetus at approximately 1.617.411 kilometers away, and the image was taken using the CL1 and CL2 filters. This image has not been validated or calibrated".
|
|
Japetus-N00043109.jpgGeodesic Japetus?53 visiteOriginal caption:"N00043109.jpg was taken on November 15, 2005 and received on Earth November 16, 2005. The camera was pointing toward Japetus at approximately 674.885 kilometers away, and the image was taken using the CL1 and CL2 filters. This image has not been validated or calibrated".
Nota: l'immagine, che mostra le cosiddette "star-trails" ed è quindi indice, assieme al bianco brillante della superficie illuminata di Giapeto, di una sostanziale sovraesposizione del frame, appare molto interessante soprattutto perchè ci consente di apprezzare bene la davvero particolare struttura del "disco" di Giapeto. Un disco-non disco, come aveva a suo tempo notato il Prof. Hoagland: una superficie non "smooth" (liscia) ed arrotondata, bensì squadrata, come fosse "scolpita", in qualche modo. E' evidente che la conclusione di Hoagland ("...Giapeto è una gigantesca nave spaziale...") rimane una boutade, ma l'assoluta peculiarità della forma - in termini globali - di questa luna lontana, resta un fatto.
|
|
Japetus-N00043118.jpgJapetus' "smile"...53 visiteOriginal caption:"N00043118.jpg was taken on November 16, 2005 and received on Earth November 17, 2005. The camera was pointing toward IAPETUS at approximately 806.360 kilometers away, and the image was taken using the CL1 and IR1 filters".
|
|
Japetus-N00049173.jpgTwo-faced Japetus53 visiteOriginal caption:"N00049173.jpg was taken on January 24, 2006 and received on Earth January 25, 2006. The camera was pointing toward Japetus that, at the time, was approximately 954.836 Km away.
The image was taken using the CL1 and CL2 filters".
|
|
Japetus-N00056228.jpgA little slice of light...53 visiteCaption originale:"N00056228.jpg was taken on April 01, 2006 and received on Earth April 02, 2006. The camera was pointing toward Iapetus that, at the time, was approximately 1.867.469 Km away, and the image was taken using the CL1 and IR1 filters".
|
|
Japetus-N00056325.jpgDarker than the Night!53 visiteCaption originale:"N00056325.jpg was taken on April 07, 2006 and received on Earth April 08, 2006. The camera was pointing toward Japetus that, at the time, was approximately 923.304 Km away.
The image was taken using the CL1 and CL2 filters. This image has not been validated or calibrated".
|
|
Japetus-N00071141.jpgJapetus in natural colors53 visiteCaption NASA:"N00071141.jpg was taken on November 27, 2006 and received on Earth November 28, 2006. The camera was pointing toward Japetus that, at the time, was approximately 1.998.833 Km away.
The image was taken using the CL1 and IR3 filters. This image has not been validated or calibrated".
|
|
| 2244 immagini su 187 pagina(e) |
 |
|
|
|
|
68 | |
|
|
|
|
