PlaneWave Logo White
0
0 Items Selected

No products in the Quote.

a

RC24 — 24-inch Ritchey-Chrétien Optical Tube Assembly

SKU: 240123Q Categories: , ,

$86,500.00

The 24-inch Ritchey-Chrétien Optical Tube Assembly (RC24) from PlaneWave Instruments is a masterpiece of optical engineering designed specifically for advanced astronomers and astrophotographers. Featuring a Ritchey-Chrétien optical design, the RC24 is perfect for producing sharp, high-contrast images, suited for a range of demanding observational and scientific applications.

*Price excludes shipping and crating. See our crating and pricing policy for full details.

Key Features Overview

The RC24 is celebrated for its outstanding specifications and features:

  • Ritchey-Chrétien (RC) optical design
  • 24-inch (610 mm) aperture
  • 6459 mm focal length
  • f/10.6 focal ratio
  • 394.24 mm back focus from mounting surface
  • Fused silica mirrors
  • Lightweight and rigid carbon fiber optical tube assembly
  • Delta-T ready with built-in dew heaters for both primary and secondary mirrors
About the RC24 — 24-inch Ritchey-Chrétien Optical Tube Assembly

RC24’s Key Features

Large Aperture and Ritchey-Chrétien Optics

The RC24 employs a purely reflective Ritchey-Chrétien optical system, which includes high-quality hyperbolic mirrors free from refractive optics. This design ensures superior light throughput and excellent image fidelity across the entire field of view, minimizing chromatic aberration and maximizing contrast. This optical system is particularly effective for precise on-axis observations and is less concerned with wide-field imaging.

Robust Mechanical Structure

Constructed with a carbon fiber truss design, the RC24 maintains a lightweight yet durable framework that minimizes thermal expansion. This design ensures sustained optical alignment and structural integrity, making it easier to manage and adapt to various telescope mounts.

Advanced Thermal Management

The RC24 is equipped with integrated cooling fans and thermal management systems that expedite reaching thermal equilibrium. This setup significantly reduces air turbulence inside the telescope tube, thus minimizing image distortion caused by temperature fluctuations and maintaining optimal imaging conditions.

Application-Specific Benefits

Astrophotography

With its large aperture and high-quality optics, the RC24 enables astrophotographers to capture detailed and vivid images of deep-sky wonders, making it an exceptional instrument for capturing expansive galaxies, nebulae, and other celestial phenomena.

Astronomy Research

The RC24 is an indispensable tool for academic institutions and observatories engaged in high-level astronomical research. Its precise imaging capabilities facilitate detailed studies such as spectral analysis, light curve acquisition, and other advanced scientific endeavors.

Specifications

RC24 — 24-inch Ritchey-Chrétien Optical Tube Assembly

OPTICAL SYSTEMS
SECONDARY MIRROR
PRIMARY MIRROR
included items
Aperture 610 mm (24")
Focal Length 6469 mm (255")
Focal Ratio f/10.6
Central Obstruction 32% of the Primary Mirror Diameter
Back Focus from Mounting Surface 394.24 mm (15.6")
Back Focus from Racked in Focuser 185.4 mm (7.3")
Weight 240 lbs (108.9 kg)
OTA Length 1422 mm (56")
Upper Cage Carbon Fiber Truss
Lower Cage Carbon Fiber Truss with Aluminum Light Shroud
Diameter 175 mm (6.89")
Material Fused Silica
Shape Hyperbolic
Coating Enhanced Aluminum - 96%
Optical Diameter 610 mm (24")
Outer Diameter 622 mm (24.5")
Shape Hyperbolic
Material Fused Silica
Coating Enhanced Aluminum - 96%
Included Items CDK24 Focus Spacer (240343-1) - This 5.539″ long spacer is installed between the backplate and the focuser to take up some of the CDK24’s extra backfocus and reduce the torque placed on the focuser mechanism. This spacer is sized such that the backfocus distance behind the focuser is 8.8″.
Heating Elements for Dew Prevention - The heating pads on the primary and secondary mirror require the 600195 Delta-T controller sold separately
Primary Mirror Cover - To protect the primary mirror
Flashdrive - Contains software and instructions for collimation and spacing the primary to secondary mirror
Wrench Set (5812A35) - Standard hex wrenches (European orders only)

Recommended Products

ImageNameSummaryPriceBuy
L-600 Direct-Drive Telescope Mount

The PlaneWave L-600 Direct Drive Mount represents the pinnacle of engineering excellence, designed to meet the rigorous demands of astrophotography enthusiasts and advanced astronomy researchers. This mount, a key component in our L-Series, integrates superior technology to provide an unparalleled observational platform.

*Price excludes shipping and crating. See our crating and pricing policy for full details.

Key Features Overview

The L-600 stands out with its notable specifications and features:

  • 300 lbs load capacity
  • Direct drive motors for zero backlash, zero periodic error, and fast 50-degree-per-second slew speeds
  • High-resolution encoders for precise positioning
  • Enclosed electronics
  • Through the mount cabling
  • Alt/Az or equatorial installation orientations
  • Ideal for the DeltaRho 500, CDK17, CDK20 f/6.8, CDK20 f/7.7, CDK24, IRDK17, IRDK20, IRDK24, RC20, and RC24 optical tube assemblies
$35,000.00
Portable Rolling Pier

Don’t let bad weather stop you from enjoying your L-Series Mount every clear night. The Portable Rolling Pier lets you move your L-series Mount and telescope to the best spot for stargazing in no time. Just grab the steering T-handle and roll it wherever you want! With the auto-mount modeling feature in our PWI software, your L-Mount will be ready to capture amazing night sky images in minutes.

$8,700.00
Electronic Focus Accessory (EFA) Kit
  • The EFA kit automates focusing on the optional Hedrick Focuser, or IRF90 rotating focuser.
  • Monitors temperature (primary-mirror and OTA back-plate).
  • Controls the fans built-in to CDK telescopes.
  • Ensure you have the proper EFA kit selected for your telescope below.
    • 125901-Kit is for CDK12.5 OTAs.
    • 240901-Kit is for CDK14, CDK17, CDK20, and CDK24 OTAs.
$920.00$1,150.00
Fabric Light Shroud

This is a spandex fabric light shroud that blocks out stray light and minimizes dust on the primary mirror.

Available for the CDK14, CDK17, CDK20, CDK24, and CDK700.

$140.00$790.00
Delta T Heater
  • The Delta T controller is an optional accessory for dew prevention on CDK14 through CDK24 OTAs and the CDK700 system.
  • CDK12.5 to CDK24 and CDK700 telescopes come with primary and secondary mirror dew heating pads (CDK700 adds tertiary mirror heating), which are ready to accept the Delta T controller.
  • Controlled via PWI3 software for CDK12.5 through CDK24 OTAs (PWI2 for the CDK700).
$750.00
Telescope Dovetail Saddles

The Keller EZ Saddle (600182) accepts Losmandy D-style dovetail rails such as the CDK12.5, CDK14, and DeltaRho 350. This saddle comes standard with the L-350 mount and can also be attached to the outside arm of any L-series mount for dual-mounted OTA configurations.

The PlaneWave Wide Saddle (200919) comes standard with L-500, L-550, and L-600 mounts for securing CDK17, CDK 20, CDK24, and DeltaRho 500 telescopes.

$400.00
IRF90 – Integrated Rotating Focuser
  • The IRF90 is a large capacity Integrated Focuser and Rotator for use with Alt/Az, or equatorially mounted systems.
  • Occupies 3.5″ of backfocus with the focuser fully racked in, and 4.7″ when fully racked out.
  • The Focuser is capable of lifting 40 lbs (18 kg) with a range of 30mm (30000 microns/1.2″).
  • The Rotator has a 90mm aperture with a range of 365 degrees with hard stops to eliminate any chance of cord wrap.
  • IRF90 is controlled via PWI4 software for autofocusing and optional field de-rotation (if using an Alt/Az mounted system).
$5,200.00
Piggyback Dovetail Bars
  • Piggyback dovetails for mounting accessories atop an optical tube. These dovetails accept Losmandy D-style accessories.
  • Piggyback Dovetail Assemblies come with mounting brackets and a Losmandy style dovetail for mounting accessories on your CDK14, 17, 20, 24, and 700.

Please Note- For CDK17 users:

  • 170990 – is for the current CDK17 design with 10.24” of backfocus
$400.00$650.00
Hedrick Focuser
  • The Hedrick focuser designed by PlaneWave is a heavy duty no-slip focuser capable of handling an imaging payload of up to 20lbs.
  • Occupies 3″ of backfocus with the focuser fully racked in, and 4.2″ when fully racked out.
  • Focuser travel range of 30mm (30000 microns/1.2″)
  • The focus tube runs on 5 bearings and is driven by a leadscrew so there is no chance of slipping.
  • Focus may be automated through a computer using PlaneWave’s EFA Kit and PWI3 software.
  • The focuser comes with pre-installed motor that can be controlled with the EFA hand controller or PWI3 software.
$1,150.00
L-500/L-600 Equatorial Wedge
  • Add to the versatility of your L500/600 Direct Drive Mount with PlaneWave’s Equatorial Wedge for precise polar alignment and tracking accuracy.
  • Each wedge is made for your specific latitude and has an alignment range of +/- 3 degrees.
  • Uses oversized fine thread adjustment screws and brass tightening nuts for fine latitude adjustment.
  • Weighs 145lbs fully assembled
$3,500.00
IRF90 2-Inch Visual Adapter

The IRF90 to 2″ Visual Accessory Adapter allows you to attach a 2″ mirror diagonal and eyepiece to your IRF90 rotating focuser.  Used in conjunction with other PlaneWave adapters to space your eyepiece at the optimal position for your CDK model.

See the adapter diagram (under the Downloads tab) for more information on the adapters needed for your CDK.

$140.00
Finderscope and Mounting Bracket

The back plate on all of the CDK models has four mounting positions for a finder mounting plate.

  • The finder mounting plate attaches to the back plate of the telescope and the quick-release finder bracket attaches to the mounting plate.
  • If the telescope is used on a German Equatorial mount it may be convenient to purchase two finder scopes, one for the east and one for the west side of the telescope.
  • The finder scope is a Baader 10×60 Varios with mounting rings and L- bracket.
$460.00
2 inch Mirror Diagonal
  • The Tele Vue Everbrite has a Pyrex mirror with 1/10th wave accuracy
  • Dielectric, non-metallic coatings have 99% reflectivity across the visible spectrum
  • Resulting images through this diagonal are brighter and “whiter”
  • The Everbrite’s body is machined from one solid block of aluminum for permanent alignment
  • 2″ filter anti-reflection threads in the diagonal let you attach filters to the diagonal instead of moving from eyepiece to eyepiece
  • Brass clamp ring holds 2″ eyepieces and accessories firmly in place without marring the barrels
  • Included 2″ to 1.25″ HiHat Adapter is of same high quality in make and materials
$394.00
Mounting Bracket for Finderscopes
  • This is an L-shaped bracket that attaches in four different places on the back of any of the CDK models.
  • This is used to mount a finderscope or some other accessory.
  • Two 1/4-20 screws provided attach the bracket to the backplate of the telescope and two 10-32 threaded holes spaced at 1.450″ can be used to mount accessories too.
$50.00