For sale is a nice Skywatcher Black Diamond 102mm f4.9 achromat in very good condition. I've been using this for wide field visual observing - it's great on the Milky Way, M42, Eta Carina, etc. It also does surprisingly well on the Moon and planets. Also excellent for terrestrial use.
Includes the rings shown in the picture but not the finder, diagonal or eyepiece.
Asking $290. Postage available or pickup from Drummoyne in Sydney.