Hitchhiker's Guide to Rukl Chart 33

See also an impressive high-resolution shot of the Triesnecker area at astro-shop.com.

Rimae Triesnecker (JRF <freeman _at_ netcom.com>)

This rille system contains members that are both easy and difficult in amateur instruments; it will provoke many interesting comparisons of telescope capability.

Sinus Medii (David North <d _at_ timocharis.com>)

Worth inspection is the Sinus Medii area, particularly the Triesnecker rille complex where it fractures Rhaeticus. In the eyepiece, it actually looked as if the southern extension of Rima Triesnecker met up with Rima Oppolzer, but the charts belie this