Astronomy Picture of the Day
December 7, 2012

Through the Fog (Part II)
Through the Fog (Part II)

Credits: NASA/JPL/Space Science Institute - Credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/IPF

Today's view of Titan's Surface highlights a small portion of the North-Western Region known as Shangri-la: a large, Equatorial, Dark Region that radar observations revealed to be covered by Longitudinal Dunefields. The bright, Circular Feature visible right of center is a potential Impact Crater (one of the very few Impact Craters that have been spotted on Titan so far).


North on Titan is up and rotated about 15° to the right. This view was created by combining multiple images taken using a combination of spectral filters sensitive to Wavelengths of InfraRed Light centered at 938 and 619 nanometers. The images were taken with the NASA - Cassini Spacecraft Narrow-Angle Camera on May 13, 2007, at a distance of approximately 125.000 Km (such as about 77.000 miles) from Titan. Image scale is roughly 1 Km (such as approx. 0,6 miles) per pixel. Due to scattering of light by Titan's hazy Atmosphere, the size of the Surface Features that can be resolved is a few times larger than the actual pixel scale.


This picture (which is an Original NASA - Cassini Spacecraft b/w image-mosaic published on the NASA - Planetary Photojournal and identified by the n. PIA 08971) has been additionally processed and then colorized, according to an informed speculation carried out by Dr Paolo C. Fienga (LXTT-IPF), in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Cassini Spacecraft and then looked outside, towards the Saturnian moon Titan), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among others, the existence of different Elements present in the Atmosphere and on the Surface of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.


Note: it is possible (but we, as IPF, have no way to be one-hundred-percent sure of such a circumstance), that the actual luminosity of the Albedo Feature seen in this frame would appear, to an average human eye, way lower than it has been shown (better yet: interpreted) here.



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