|
|
|
Praxiteles Crater (enhanced Natural Colors; credits: Lunar Explorer Italia)
|
MESSENGER's high-resolution images obtained during the mission's second Mercury flyby have revealed a number of irregularly shaped depressions on the floor of Praxiteles Crater. These depressions are intriguing indications of possible past volcanic activity within this Crater. View the previously released NAC image of Praxiteles for additional discussion.
The image shown here is similar to one recently published in the 1st of May issue of the "Science" magazine. This image was created by first mosaicking together the highest-resolution NAC images available of Praxiteles (one of which is shown in the previous web release), to produce complete coverage of the Crater. Independently, an enhanced-color image of Praxiteles was created by using images from all 11 WAC narrow-band color filters. (Visit last week's web release for more examples of enhanced-color images see PIA12051).
The WAC images provide important color information, but the WAC resolution is considerably less than that of the mosaicked NAC images. Thus, by overlaying a slightly transparent version of the WAC enhanced-color image on the high-resolution NAC mosaic, the high-resolution color view of Praxiteles crater shown here was produced. This overlay-color view helps associate the color features with the morphologic surface features. The fact that the irregularly shaped depressions on the floor of Praxiteles are associated with bright orange and yellow color features provides evidence that the depressions may be related to past volcanic activity in this area of Mercury.
Date Acquired: October 6, 2008
Instrument: Wide Angle Camera (WAC) and Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Resolution: 210 meters/pixel (0,13 miles/pixel)
Scale: Praxiteles Crater has a diameter of about 182 Km (approx. 113 miles)
|
|
(Dettagli)
ad un nostro Amico e Partner "Storico", attualmente in difficoltà, hanno svuotato la macchina (il suo strumento di lavoro per eccellenza) e rubato tutto, ivi incluso un pc portatile che conteneva la "Memoria", presente e futura, di Lunexit.
Non posso dire di chi si tratti (mi capirete...), ma se volete dare una mano ad un VERO Compagno di Viaggio per ricomprarsi (almeno) un pc, mandate il Vostro contributo a me, e poi io provvederò a smistarlo (sperando che Vi fidiate).
Il mio indirizzo è: Paolo C. Fienga, Via Novara, 5 - 20025 Legnano (MI).
PER FAVORE: NON RISPONDETE A QUESTO MESSAGGIO! SE VOLETE E POTETE; MANDATE UN CONTRIBUTO. NON VI CHIEDO ALTRO. GRAZIE DI CUORE.
Dr Paolo C. Fienga - Lunar Explorer Italia/Italian Planetary Foundation