Clear aperture

10 inches, 254mm

Secondary size

2.3 inches, 23%

Focal length

145 inches, 3683mm

Focus range

9.5 inches, 241mm

Focal ratio

f14.5 nominal, f13.6 at min focus, f15.8 at max focus point

Field size

3/4 degree (1.5 moon diameters), over a 2 inch field

Magnification range

61x with 60mm ocular to 921x with 4mm ocular

Resolution

0.45 arc seconds

Size

12" diameter x 29"long, incl the focuser

Weight of tube w/o dewcap

26.4 lb., 12kg.

Diameter of corrector cell
(to fit solar filter)

11.4"

Finish

Black anodized cells, white textured tube

Mirror coating

96% enhanced and protected aluminum

Corrector coating

Broadband multi-coatings both sides