Astronomy Specialist

GSO 12" f/8 RITCHEY-CHRETIEN CARBON TRUSS OTA

$5,299.00AUD
SKU: GSRC12A

GSO

Ritchey-Chrétien

25 kg


 

The Ritchey-Chrétien telescope is the most popular optical design used by professional astronomers and astroimagers all over the world. The Hubble Space Telescope itself uses the RC configuration.

All new GSO RC telescopes now come with a focuser upgrade kit allowing you to connect the ZWO & QHY EAF focusers without additional modification.

The Guan Sheng Optical RC's are excellent astrographs with solid build quality and precisely-figured optical surfaces. The concave hyperbolic primary and convex secondary mirrors deliver excellent correction across the field. The low thermal expansion quartz mirrors have a surface correction of 1/12th Lambda PV or better and have highly reflective dielectric coatings ensuring 99% reflectivity.

The telescope is made with a lightweight and rigid carbon fibre truss tube structure and features computer-optimized baffles to eliminate stray light.

The 12" f/8 Ritchey-Chrétien comes with a dual-speed 3" 10:1 Crayford focuser with 80mm of focus travel and clear aperture of 68mm. The focuser can be rotated 360 degrees for perfect framing. Includes a selection of 2" & 1" extension rings to make connecting a variety of imaging accessories straightforward.

The rear of the telescope has a tilt plate for precise adjustment of the focal plane with M117 x 1 male threads. The 3" focuser connects to these threads on the telescope-side and has an M77 x 1 female thread on the camera-side. The focuser includes an M77 x 1 male to M74 x 1 male adapter with an internal M69 x 1 female thread.

You can use either the Sharpstar RC 0.8x reducer or TS Optics M68 1x flattener using our Testar TE-GSO-SHARPSTAR.RED-M68 combo adapter, which allows you to connect both the corrector to the focuser and provides an M68 x 1 thread for connection to common imaging equipment. 

Specifications

 

Optical design Ritchey-Chrétien
Diameter 304 mm
Focal length 2432 mm
Focal ratio f/8
Linear obstruction 150 mm
Corrected field 30 mm (65 mm with optional corrector)
Backfocus distance 288 mm from rear cell
Focuser thread M77 x 1 female, M117 x 1 male (on tilt plate)
Weight 25 kg
Tube outer diameter 439 mm
Tube length 864 mm without focuser
SKU GSRC12A
Items included

 

  • GSO 12" f/8 RC Carbon Truss tube
  • 3" dual-speed Crayford focuser
  • M77 x 1 male to M74 x 1 male with internal M69 x 1 female thread
  • M74 x 1 female to 2" barrel adapter
  • 2" to 1.25" barrel adapter
  • 2 x 1" M117 male to M117 female extension tubes
  • 1 x 2" M117 male to M117 female extension tube
  • Losmandy bars on top and bottom of tube
  • Two finderscope brackets bolted on tube
  • Dust caps for primary and secondary mirrors
GSO 12" f/8 RITCHEY-CHRETIEN CARBON TRUSS OTA.

GSO 12" f/8 RITCHEY-CHRETIEN CARBON TRUSS OTA

$5,299.00AUD

Optical design

Ritchey-Chrétien

Image circle

Focal ratio

f/8

Aperture

304 mm

Focal length

2432 mm

Optical thickness

Threads

Cooled

Colour or Mono

Pixel size

Sensor dimensions

Resolution

Sensor diagonal

Quantum efficiency

Read noise

Fullwell capacity

Bit depth

FPS

Camera backfocus

Filter size

Filter size

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

Mount type

Payload capacity

Latitude range

Dovetail saddle

Slew speed

Encoders

Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter

Weight

25 kg

Length

Width

Height

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