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Saturn Ring Plane Crossing - November 19, 1995


Kitt Peak Observatory

The above 120 second exposure with 0.8 arcsecond seeing was taken in the 890 nm methane band using a narrow filter (5.0 nm FWHM). The exposure was begun at about 4:06 Universal Time (UT) on November 22 (9:06 p.m. MST, November 21). A central mask about 25 arcseconds wide is used to reduce the scattered light from the disk of Saturn. North is to the top, and East is to the left. The Sun is on the opposite side of the rings from the Earth, and so the rings are a `negative' image of their usual appearance. The C Ring and Cassini's Division are bright while the A and B Rings are dark. This image clearly shows the small Saturnian moons Epimetheus (top of the East ansa, moving East), Prometheus (bottom of the East ansa, moving West), and Janus (bottom of the West ansa, moving West). This image confirms the suggestion from HST observations that Prometheus is about 30 minutes behind the position predicted on the basis of the pre-1995 ephemeris.

Pic du Midi Observatory

New image of Saturn taken during the night of November 6, 1995. This image was taken with the 1 meter telescope at Pic du Midi observatory using an I filter. The observer was Francois COLAS member of the S2P (Station de planetologie des Pyrenees).

Hubble Space Telescope

Image taken by the Hubble Space Telescope on October 9, 1995 showing Saturn's aurora. Click on the image for more detailed information.

Amateur Image

Image by Jesus Rodriguez and Rafael Gonzalez & Francisco on October 12, 1995. Image is dark-frame substracted (no flat-fielded) and post processed with stretching, logaritmic scaling, unsharp masking and noise reduction. Image best seen with gamma display around 2.0. Then, two satellites can be seen as fuzzy points at each side of the disc.


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Ron Baalke