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
June 16th, 2006, 2:06 - 2:21 UT, seeing 2-4/10 (poor - fair), transparency 4.5. Central meridian longitudes: System I: 94.7°, System II: 82.7°.
TMB 175mm f/8 refractor on a homemade Dobsonian-style mount. Magnification 198x - 238x with Baader binoviewer. Filters used: none, Baader Moon & Skyglow filter. High clouds obscured the view from time to time, with the seeing varying from poor to fair which limited the amount of fine detail visible.
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), the South Temperate Zone (STZ), South Temperate Belt (STB), South Tropical Zone (STropZ), and the South Equatorial Belt (SEB) were visible. The SPR had a tan-brown color to it.
Along the southern edge of the SEB the Great Red Spot (GRS) was light pink in color. The GRS appeared to have a darker portion to it near the center. Preceding and following the GRS the SEB appeared to be bisected by a rift possibly composed of a number of ovals but I wasn't 100% sure. The southern portion of the SEB (SEBs) appeared red in color, while the northern portion (SEBn) appeared gray. "Red Jr." had a slight pink color to it and followed the GRS along the northern edge of the SPR.
In the Equatorial Zone (EZ) several large blue-colored festoons were visible and extended from the North Equatorial Belt south (NEBs) and connected to a faint Equatorial Band (EB). Following the festoons the EZ appeared white. The EB usually appears more near the middle of the EZ, but this time it appeared offset towards the South Equatorial Belt (SEB).
The NEB had a reddish-brownish color to it, and appeared uneven along the NEB north (NEBn). The North Tropical Zone (NTropZ) was visible between the NEB and the North Polar Region (NPR), and the NPR had a blue-gray color to it. The shadow of Ganymede was visible in the NPR. Ganymede was visible off of the preceding (or left) limb of Jupiter while Io, which had just come out of eclipse, was visible on the following (or right) limb.
Limb darkening was noticeable on following limb of the globe.
When the seeing settled down the moons appeared as disks, with Callisto appearing gray in color, Io white-orange in color, and Ganymede yellow in color.
After finishing the above sketch I observed several stars and deep-sky objects. This included Antares, M4, double stars in Scorpius, M14, M28, M22. All in all it was nice to be out under the stars.