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  • GSO Ritchey-Chretien 152mm f/9 con intubazione in metallo GSO Ritchey-Chretien 152mm f/9 con intubazione in metallo

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for order at least €250

GSO Newton 254mm f/4 with truss carbon fiber tube

Product code: GSN10f4Truss

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Quick Overview

GSO Newton 254mm f/4 with truss carbon fiber tube with quality optics from GSO, perfect for astrophotography thanks to the large aperture and short focal ratio. The carbon fiber truss tube offers maximal rigidity and collimation stability, without focus shift caused by temperature change. It has 2 Losmandy style dovetail bars, 2" Monorail dual speed focuser for precise focusing and parabolic quality optics from GSO with 94% reflectivity of primary and secondary mirror.

Availability: Order

Order €2,299.00
22% tax incl
if you pay by bank transfer €2,230.03


Newtonian telescopes from GSO are well-known worldwide for very fine optics. In our experience, telescope mirrors from GSO are among the the best in this price range. GSO now offers these top mirrors in a true high-end tube for demanding applications like astrophotography with long exposure times.

Main features of GSO Newton truss telescopes:

- sharp optics with above-average image quality
94% reflectivity for primary and secondary mirror for a brighter image with higher contrast
- large 88 mm secondary mirror for good illumination
high-quality carbon truss tube
primary and secondary cell made of metal - fully adjustable
2" Monorail dual speed focuser (10:1)
ideal for commercially available coma correctors for astrophotography - our recommendation: TSGPU 2" 4-element corrector
Two Losmandy style dovetail bar at opposite sides - one for connecting the telescope to the mount, one for attaching accessories like guide scope or camera support for side-by-side photography

The carbon tube with joints of stainless steel or aluminium

The tube combines the advantages of a carbon tube, regarding temperature stability, with the rigidity of a solid tube. After temperature changes, refocusing is not needed. The workmanship is outstanding, the connecting elements are precisely CNC-manufactured of aluminium.

Technical specifications

Optical Design Newton
Optics Specchio parabolico
Diameter (mm) 254mm
Tube diameter N/A
Focal Length (mm) 1016mm
Focal Ratio 4
Field flattener/corrector Not included (optional)
Optical Tube Carbonio
Obstruction No
Focuser 50,8mm Crayford, micrometrico
Eyepiece holder 50,8mm with 31,8mm reducer
Weight 17 Kg
Hard/soft case No

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