This is a serious telescope. The 12-inch (303mm) mirror collects more than twice as much light as an 8-inch. At Te Awamutu Space Centre we use this model as our main telescope for public viewing sessions, so we certainly recommend it if you're looking for uncompromising images at the best price.
What you can see
The Moon looks great with detailed craters and mountains.
Venus is a small disk with phases visible.
Mars is a small disk.
Jupiter is a clear disk. You can see its main weather bands and four biggest moons.
Saturn is very nice. You can clearly see the rings and some of the moons.
Deep sky objects (nebulae etc) are easily visible. Star clusters such as Omega Centauri look nice.
Comets can look great but they vary a lot.
Objective mirror: 303 mm (12”);
Focal length: 1500 mm;
Focal ratio: f/5;
Tube length: 1450 mm;
Focuser: Crayford 2";
Finder scope: 8x50 mm;
Weight: 22kg (tube), 36kg (tube + base).
9 mm Plossl 1.25" eyepiece; 30 mm Superview 2" eyepiece; Cooling fan; dobsonian base (some assembly required).