ASTRO-PHYSICS
305mm F/12.5 Maksutov Cassegrain
with Carbon Fiber Tube

 

The 305mm f/12.5 was introduced at the Northeast Astronomy Forum (NEAF) on April 26, 2008.

Specifications

Clear aperture

12 inches, 305mm

Secondary size

3.46 inches, 28.8%

Focal length

150 inches, 3810mm

Focus range

4.1 inches, 105mm

Focal ratio

f/12.5 fixed focal ratio

Field size

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

Magnification range

64x with 60mm ocular to 952x with 4mm ocular

Resolution

0.375 arc seconds

Size

14" diameter x 36" long, with added 5" focuser length

Weight of tube w/o dewcap

65 lb., 29.5kg., dewcap 6 lb, 2.7kg

Diameter of corrector cell
(to fit solar filter)

14.50", 368.3mm

Finish

Black anodized cells, clear coated carbon fiber tube

Mirror coating

96% enhanced and protected aluminum

Corrector coating

Broadband multi-coatings both sides



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Copyright 2004 Astro-Physics Inc. All rights reserved.
Last modified: December 17, 2012

Astro-Physics, Inc.
11250 Forest Hills Road, Rockford, IL  61115, U.S.A.
Phone: 815-282-1513   Fax: 815-282-9847