Date (U.T.): April 28, 2011
Time (U.T.): 02:00
L1 212.9*, L2 105.9*, L3 92.6*
De 7.9*, Ds 9.1*, 0.5m, 19.0" (Equatorial)
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 155x, 258x, and 388x
Filters: None (IL)
Seeing (1-10): 7, Antoniadi (I-V): II
Transparency (1-6): 5
North Polar Region (NPR): The northern limb (pole) exhibits a dark (3/10) elliptical center. The region appears dusky to shaded (4-6/10) and mottled (greenish-brown). A dark (3/10) ring surrounds the northern limb.
North Temperate Belt (NTB): Appears dark to dusky (3-4/10) and irregular. It appears to contain thin and bright (7/10) streaks (sections0 within it.
North Tropical Zone (NTrZ): Appears to contain bright (7/10) sections with dark to dusky (3-4/10) diagonal columns across it connecting to the NTB to the NEB. The bright sections represent the remnants of the NTrZ storm.
North Equatorial Belt (NEB): Appears broad and dark to dusky (3-4/10). The northern and southern borders appear irregular.
Equatorial Zone (EZ): Appears shaded to bright (6-7/10), but no other detail is noted within.
Shadow of Ring on the Globe: Appears very to extremely dark (2/10) and diffuse.
South Equatorial Belt (SEB): Appears dark to dusky (3-4/10) and thin.
South Polar Region (SPR): Appears dusky to dull (4-5/10) and mottled (greenish-brown).
Ring A: The outer half of the ring appears dusky (4/10) and a pastel reddish-brown color. The inner half appears shaded (6/10) and light pastel yellow-orange color.
Ring B: The outer half appears bright (7/10) and the inner half contains dusky to dull (4-5/10) streaks.
Ring C (Crepe): Appears dusky (4/10) and translucent.
Mimas (13.46m) appears south-following the planet.
A digital image produced in Pixelmator.
Carlos E. Hernandez