TS Optics RC 406/3250 Carbon Ritchey-Chretien OTA

Description

Conduct professional extragalactic surveys and high-resolution deep-sky imaging with the TS Optics RC 406/3250 Carbon Ritchey-Chretien OTA observatory-grade all-reflective astrograph telescope optical tube assembly. Operating at an f/8.0 focal ratio with a 3250mm focal length, this 406mm (15.98 in) clear aperture instrument delivers a 0.28 arcseconds theoretical resolving power and reaches magnitude 14.8, resolving structural detail in distant galaxy clusters and planetary nebulae.

The optical train features hyperbolic primary and secondary mirrors manufactured from fused quartz substrates, treated with 99% high-reflectivity enhanced dielectric coatings and a protective SiO2 overcoat, exhibiting a 47.0% central obstruction by diameter (22.1% by area) from its 191mm secondary baffle. Built inside a low-expansion carbon fiber truss structure measuring 1114mm in length with a 535mm outer diameter, the assembly supplies 290mm of back focus from the rear mechanical backplate. Fitted with an external 3-inch heavy-duty dual-speed Monorail linear bearing focuser and an integrated 360-degree field rotator, this 37.00 kg (81.57 lbs) telescope covers a native 35mm image circle and illuminates up to 60mm medium format when paired with optional 3-inch correctors.

Key Features of TS Optics RC 406/3250 Carbon Ritchey-Chretien OTA

Engineered for permanent observatory installations, this 16-inch Ritchey-Chretien couples low-expansion fused quartz mirrors with an open carbon fiber truss chassis to eliminate thermal focal drift. A 3-inch rotatable Monorail focuser, dual Losmandy-style dovetail bars, primary mirror cooling fans, and three threaded M117 extension spacers provide a rigid platform for large-format cameras.

• 406mm (15.98 in) clear aperture with 3250mm focal length and f/8.0 optical speed
• True Ritchey-Chretien optical design with hyperbolic primary and secondary mirrors
• Fused quartz mirror substrates paired with a low-expansion carbon fiber truss chassis
• Enhanced dielectric mirror coatings with 99% reflectivity and protective SiO2 layer
• 3-inch heavy-duty dual-speed Monorail linear bearing focuser 1:10 with 360-degree rotator
• Generous 290mm back focus distance with three included thread-on M117 extension spacers
• Native 35mm image circle expandible to 60mm medium format with optional 3-inch correctors
• Dual 75mm Losmandy-style dovetail bars, primary mirror cooling fans, and adapters included

Sixteen-Inch Fused Quartz Hyperbolic Mirror System

Hyperbolic primary and secondary mirrors correct coma and spherical aberration natively across an all-reflective optical train, eliminating false color completely on bright guide stars. Fused quartz substrates maintain precise optical figure during changing nocturnal temperatures, supporting practical visual and video magnifications from 58.0x up to 812x.

Carbon Truss Open Architecture & M117 Spacing Train

Holding heavy CCD and CMOS imaging trains without drawtube flexure is delivered through a 3-inch Monorail focuser utilizing a central stainless steel guide rail with a 1:10 micro-drive and an integrated 360-degree field rotator. Three included M117 threaded extension spacers (two 25mm and one 50mm) allow precise spacing adjustments, while dual Losmandy rails secure the 37.00 kg assembly to observatory mount saddles.

• 3-inch heavy-duty dual-speed Monorail focuser with 1:10 micro-reduction to prevent drawtube sag
• Integrated 360-degree camera field rotator with direct M117 threaded mechanical coupling
• Open carbon fiber truss architecture ensuring rapid thermal equilibrium and low expansion

TS Pro Carbon Ritchey-Chretien Series Guarantee

The TS Optics RC 406/3250 Carbon Ritchey-Chretien OTA is backed by a 2-year limited warranty against material and manufacturing defects. The complete factory package contains the Carbon Truss RC 16-inch OTA, 3-inch dual-speed Monorail focuser, 2-inch and 1.25-inch adapters, primary mirror cooling fans, and three M117 extension rings.