TS Optics Pro RC 304/2432 Carbon Ritchey-Chretien OTA

Description

Eliminating off-axis coma across broad imaging fields without corrective lenses, the TS Optics Pro RC 304/2432 Carbon Ritchey-Chretien OTA is an observatory-grade all-reflective astrograph telescope optical tube assembly built for extragalactic target imaging and planetary nebula auditing. Operating at an f/8.0 focal ratio with a 2432mm focal length, this 304mm (11.97 in) aperture instrument delivers a 0.38 arcseconds theoretical resolving power and reaches magnitude 15.1, providing high optical throughput across large sensor formats.

The optical system features hyperbolic primary and secondary mirrors fabricated from homogeneous fused quartz glass, treated with 99% high-reflectivity enhanced dielectric coatings and a protective SiO2 overcoat, yielding a 46% central obstruction by diameter (21.2% by area) from its 140mm secondary baffle. Housed in a low-expansion carbon fiber solid and truss hybrid tube measuring 880mm without focuser and 1020mm with focuser with a 380mm outer diameter, the assembly supplies 233mm of back focus from the rear mechanical faceplate. Equipped with a 3-inch heavy-duty dual-speed linear bearing and rack-and-pinion focuser with a 360-degree rotator, this 24.00 kg (52.91 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 Pro RC 304/2432 Carbon Ritchey-Chretien OTA

Engineered for permanent observatory deep-sky imaging, this 12-inch Ritchey-Chretien pairs low-expansion fused quartz mirrors with a carbon fiber chassis to minimize focal drift. A 3-inch rotatable dual-speed focuser, dual Losmandy-style dovetail bars, primary mirror cooling fans, and three threaded M117 extension spacers provide a rigid platform for large-format cameras.

• 304mm (11.97 in) clear aperture with 2432mm 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 thermal expansion carbon fiber chassis
• Enhanced dielectric mirror coatings with 99% reflectivity and protective SiO2 overcoat
• 3-inch heavy-duty dual-speed linear bearing and rack-and-pinion focuser with 360-degree rotator
• Generous 233mm 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 Losmandy-style 75mm dovetail bars, primary mirror cooling fans, and adapters included

Hyperbolic Fused Quartz Optics & Carbon Fiber Chassis

Hyperbolic primary and secondary mirrors eliminate coma and spherical aberration natively across an all-reflective optical train without glass corrector lenses. Fused quartz substrates combined with a carbon fiber chassis maintain focal plane stability during long nocturnal exposures, supporting practical visual and video magnifications from 43.4x up to 608x.

Heavy-Duty 3-Inch Drawtube & M117 Modular Extension Train

Holding heavy CCD and CMOS camera trains without mechanical flexure is delivered through a 3-inch linear bearing rack-and-pinion focuser featuring 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 dovetail bars secure the 24.00 kg assembly to observatory mounts.

• 3-inch heavy-duty dual-speed focuser with 1:10 micro-reduction and integrated 360-degree field rotator
• Fixed primary mirror architecture ensuring optical collimation and field stability during exposures
• Three modular M117 threaded extension spacers (two 25mm, one 50mm) for flexible camera spacing

TS Pro Carbon Ritchey-Chretien Series Warranty

The TS Optics Pro RC 304/2432 Carbon Ritchey-Chretien OTA is backed by a 2-year limited warranty against material and manufacturing defects. The complete factory package contains the Carbon Fiber RC 12-inch OTA with internal knife-edge baffles, 3-inch dual-speed focuser, 2-inch and 1.25-inch adapters, primary mirror cooling fans, and three M117 extension rings.