Reflector Optical Tube Reflector GSO 10" f/4

GSO 10" f/4 Newton astrophotographer - 94% Reflectivity - 3.3" Focuser

Newton tube manufactured by GSO for wide field observation and astrophotography. Improved mechanically and optically with an ultra-stable 2" Monorail focuser. With a diameter of 254mm and a focal length of 1016mm.

The tube is made of steel with aluminum clamping rings. The GSO Newton 10" with its fast f/4 focal ratio has been optimized for astrophotography and wide field observation, with a large 88mm secondary it guarantees optical performance for both visual and deep sky photography. Its mechanical design has been made with stability in mind. This telescope is manufactured by GSO (Taiwan).

General features:

-- diffraction limited 10" f/4 for short exposure times
-- B270 "optical crown" glass and mirror
-- 94% reflection on primary and secondary mirrors.
-- 2" monorail focuser for high load capacity
-- 12V fan on primary mirror for easy thermal balancing
-- Aluminum rings with flat parts on both ends
-- Compact and transportable tube only 98 cm long
-- Sufficient backfocus even for DSLR and OAG off-axis guides

Technical Specifications:

Diameter/Focal Length: 254mm / 1016mm - f/4

Secondary diameter: 88 mm - minor axis
Tube weight: 15.3 kg (with rings and focuser)
Diameter / length: 303 mm / 980 mm
Primary mirror: B270 substrate, 94% reflection, diffraction limited
Focuser: Monorail 2" with DUAL SPEED with 1:10 reduction and brass compression rings.
Rings: Aluminum clamping rings with flat parts on both ends and M6 threads on both sides.
Collimation aid: Center mark on the primary mirror to aid perfect collimation with a laser collimator.

What comes with the tube?

-- GSO 10" f/4 newton astrograph tube
-- 8x50 finder with easy on/off clamp
-- 2" Monorail focuser with 1.25" adapter
-- Dust cover
-- Aluminum clamp rings
-- 2" extension tube
-- Collimating manual

NOTE: Despite the extreme quality of this tube, the experts at Telescopiomania.com recommend the use of a field corrector

GSO 10" f/4 Newton astrophotographer - 94% Reflectivity - 3.3" Focuser