About this product
Model: stellalyra_12_truss_rc
Part Number: RC12B
12" F/8 M-LRC Truss Ritchey-Chrétien - New Lightweight Version
An excellent choice for imaging smaller galaxies and nebulae targets this new lighter weight version weighs approx 3kg less then the older standard version RC
The RC optical design delivers images free of coma, spherical and chromatic aberrations, so is an excellent choice for colour or monochrome imaging.
Open-framed, carbon fibre truss design for incredible stability, quick thermal equalisation and easy transportation (not to mention it looks amazing!).
A fixed position primary mirror eliminates image shift that often occurs when focusing some other telescope designs.
It also features a sturdy dual-speed 3.25" linear bearing focuser.
Three CNC-machined spacer rings are included that provide flex-free focus extension when required.
Interior knife edge baffles reduce stray light for maximum contrast.
It is fitted with a Losmandy-style dovetail mounting plate on the base and a handy Losmandy-style dovetail mounting plate on top for piggy-backing over accessories.
The Hyperbolic primary and secondary mirrors are made from low thermal expansion Quartz.
The Carbon Fibre Truss ensures a rigid but light weight structure free of differential flexure whilst minimising thermal focus shift.
NOTE: Our photos show the smaller 10" f/8 RC. We will make new photos soon.
Updated July 2024: New improved focuser with a flat base makes attaching an EAF bracket much easier.
FEATURES
- Coma-free, chromatic aberration-free, spherical aberration-free optics
- 300mm (12") optical aperture
- 2400mm focal length
- f/8 focal ratio
- Fixed primary
- Back Focus: 288mm
- Quartz primary and secondary mirrors
- Primary mirror: Hyperbolic primary mirror with enhanced Al coating to 95% reflectivity
- Secondary mirror: Hyperbolic with enhanced Al coating to 95% reflectivity
- Secondary Centre Spotted for ease of Collimation
- Multiple knife-edge baffle system
- Dual speed 3.25" linear bearing Crayford-style focuser with 1.25" eyepiece adapter
- 3 Built-In Cooling Fans
- U Style Finder scope base
- Losmandy style mounting dovetail top and bottom
Extensions
The telescope is supplied with 2x 25mm, and 1x 50mm CNC-machined focuser extension rings with matt-black interiors.
Telescope Field of View Simulator
What's in the box
- Telescope OTA
- 2" to 1.25" Adapter
- 2x 25mm Focuser Extension Adapters
- 1x 50mm Focuser Extension Adapters
Specifications
- 12" F/8 M-LRC Ritchey-Chrétien Truss OTA (black)
- Ritchey-Chretien truss-tube optical assembly with 304mm f/8 primary mirror
- Dual speed rotatable 3.25" Crayford-style linear bearing focuser with 2" eyepiece holder and 1.25" eyepiece adapter
- Losmandy D-plates for mounting (2x)
- 1x 50mm / 2" and 2x 25mm / 1" extension rings
- "U" type finder base (finder not included)
- Primary and secondary dust covers
- Optical design: Ritchey-Chretien reflector
- Aperture: 304mm (12")
- Focal ratio: f/8
- Focal length: 2432mm
- Primary mirror: Hyperbolic primary mirror with enhanced Al coating to 95% reflectivity
- Secondary mirror: Hyperbolic with enhanced Al coating to 95% reflectivity
- Secondary mirror holder: 4-vane all metal spider
- Tube outside diameter = TBA
- Tube length = 841mm without Focuser
- Tube weight: 21kg without Focuser
- Shipped size: TBA
- Shipped weight: TBA
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