Daily Archives: August 30, 2013

Titan’s Collar

A ‘collar’ on Titan. Credit: NASA/JPL-Caltech/Space Science Institute

I can remember watching these images come in.  I was watching on slow scan television “Live” via ham radio and I believe Goddard was the source of the transmission.  The transmissions were terribly exciting.  I even have the same scan converter.  Fun times.

From NASA:

Titan’s polar collar — previously seen by Voyager 2 and the Hubble Space Telescope — has now been observed by the Cassini spacecraft, seen here in ultraviolet light. The collar is believed to be seasonal in nature. Researchers are still studying its cause and evolution.
This view looks toward the Saturn-facing hemisphere of Titan. North on Titan is up and rotated 32 degrees to the right. The image was taken with the Cassini spacecraft narrow-angle camera on April 13, 2013 using a spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers.
The view was acquired at a distance of approximately 1.1 million miles (1.8 million kilometers) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 4 degrees. Image scale is 7 miles (11 kilometers) per pixel.

Here is Titan from 2.3 million km (1.4 million miles) by the Voyager 2 spacecraft on 23 August 1981. Image: NASA