TS-Optics GSO 12″ RC Pro Carbon

TS-Optics GSO 12″ RC Pro Carbon Truss Tube 304/2432 - Astrophoto power

Visit TS-Optics GSO 12″ Ritchey-Chrétien (304 mm, 2432 mm, f/8) with truss carbon tube is designed for astrophotographers who demand professional results. With its large diameter, quartz mirrors with 94 % reflectivity and robust mechanics, it combines optical power and mechanical stability, ideal for sensors up to full format and beyond.

Highlights

• Genuine Ritchey-Chrétien primary and secondary hyperbolic → coma-free and relatively flat field.
• Large diameter 304 mm 0.38″ resolution and enhanced light gathering for nebulae and distant galaxies.
• Quartz mirrors (fused silica) virtually no dilatation, stable focus on long exposures.
• Reflectivity 94 % brighter, higher-contrast images than standards at 90 %.
• Carbon truss tube : structural rigidity, rapid ventilation, exceptional focus stability for long-term imaging.
• Two Losmandy dovetails maximum compatibility for heavy fixtures and fittings.
• Focuser RAP MONORAIL 3″ rack-and-pinion design on steel rail, 360° rotation, 1:10 microfocuser, 5 kg load capacity, integrated M68/M74/M77 thread.
• Gen. 2 version integrated tilt, optimized anti-glare baffle, reinforced 3″ extension.

Astrophotography

The 12″ RC delivers a corrected field of view up to approx. 35 mm diagonal without corrector, ideal for sensors APS-C. For the full format and beyond (60 mm max. with corrector), TS offers the right optical solutions. With the CCD47 reducer 0.67×the focal length drops to ≈1629 mm and the f/8 ratio increases to f/5,36which halves exposure times and widens the field of view for large objects.

Why a carbon truss tube?

Unlike aluminum, carbon limits focus variations due to temperature changes. The design truss ensures rapid ventilation and mechanical rigidity to maintain collimation, whatever the position of the tube. Result: less refocusing, more consistency in your night-time acquisitions.

The RAP Monorail 3″ focuser

A robust evolution of the Crayford RAP Monorail 3″ rests on a solid steel rail rather than on small balls, eliminating tilt even under heavy load. It features a 50 mm stroke, a clear 68 mm aperture, a 1:10 microfocuser for precise adjustments, 360° rotation and threads (M68x1, M74x0.75, M77x0.75) for secure mounting of accessories such as correctors, OAGs and heavy cameras.

RC vs SCT/Mak advantages

• No Schmidt blade : less fogging, full light transmission, including near-IR.
• Optical path 100 % reflective no permanent lenses → light gain and better spectral neutrality.
• No mirror shift : fixed primary, focusing via external focuser → optimal stability in long exposure imaging.

Technical specifications

In the box

• RC 12″ f/8 carbon truss telescope
• RAP Monorail 3″ focuser with 2″ and 1.25″ adapters
• Two Losmandy dovetails
• Extension rings (2×25 mm, 1×50 mm)
• Protective cap

In a nutshell

Visit TS-Optics GSO 12″ RC Pro Carbon Truss is the tool for the demanding astrophotographer: generous diameter, stability thanks to carbon + quartz, robust mechanics, optimized baffles and high-end focuser. A solution ready to rival professional standards for deep, sharp and bright images.