Choosing A Telescope
Telescope Aperture Considerations
Introduction to Planetary Sketching
Refractor Dobsonian Style Mounts
The Bonds: Pioneers of American Astronomy
Saturn's Encke Minima and Encke Division
Nature and Travel Photography
Recommended Astronomy Books
October 24th, 2010, 2:05 - 2:20 UT, seeing variable 4-5/10 (fair-good), transparency 5.0. Central meridian longitudes: System I: 258.1°, System II: 346.8°.
TMB 175mm f/8 refractor on an AP 800 mount. Magnification 170x - 264x with Baader binoviewer. Filters used: none, Baader Moon & Skyglow filter. Seeing started out good but became variable and was mostly fair with mid-level clouds obscuring the view from time to time.
In the above sketch the preceding limb is on the left, the following limb is on the right, south is at the top, and north is at the bottom.
In the southern portion of the globe the South Polar Region (SPR), South Temperate Zone (STZ), South Temperate Belt (STB), and South Tropical Zone (STropZ) were visible. The outline of the South Equatorial Belt (SEB) was visible, and was slightly darker than the Equatorial Zone (EZ) which appeared shaded. The SEB north (SEBn) had an irregular outline.
The shadow of Ganymede was visible near the preceding limb on the left in the STZ, as were several ovals. The shadow of Europa was visible in the SEB. The SPR was gray green in color.
In the Equatorial Zone (EZ) two festoons were visible along the North Equatorial Belt south (NEBs). The base of these festoons was blue in color. A bay was visible between the festoons and two red ovals were visible in the North Equatorial Belt (NEB). The NEB had a reddish-brownish color to it, and appeared uneven along the NEB north (NEBn).
In the northern portion of the globe the North Tropical Zone (NTrZ), North Temperate Belt (NTB), North Temperate Zone (NTZ), and North Polar Region (NPR) were visible. The NTB had several knots or thicker sections to it. The NPR was tan-brown color.
Limb darkening was noticeable on following limb of the globe.
When the seeing settled down the moons appeared as disks.
After finishing the above sketch I swung the telescope over to observe Uranus. It was resolved as a disk with a blue-green color. There appeared to be a lighter colored area near the center of the disk. A few years ago I observed Uranus with the same telescope and there were times when one of the polar regions appeared darker than the other polar region, and there appeared to be a lighter zone or belt near the equator on the following limb.