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Omegon Pro RC 355/2845 Truss Ritchey-Chretien OTA
For manual equatorial observation, the Omegon N 130/920 EQ-2 Telescope combines a 130mm spherical reflector with 920mm focal length, flexible slow-motion cables, and supplied planetary accessories.
- 130mm aperture provides 0.89-arcsecond resolution
- 920mm focal length uses f/7.1 optics
- EQ-2 mount provides slow-motion tracking
- 25mm and 10mm eyepieces included
- 6×30 finder and counterweight included
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Description
Gather research-grade narrow-band deep-space astrophotography datasets with the Omegon Pro RC 355/2845 Truss Ritchey-Chretien OTA open-frame reflector optical tube assembly. Designed in Germany, this 14-inch telescope features a 355mm (13.98 inches) aperture and a 2845mm focal length at f/8, attaining 0.33 arcsecond Dawes resolving power and reaching magnitude 14.6 for remote observatory installations.
The Omegon Pro RC 355/2845 Truss Ritchey-Chretien OTA incorporates dual hyperbolic quartz mirrors with near-zero thermal expansion and 94% enhanced reflective multi-layer aluminum coatings. Its open truss architecture mates carbon fiber rods to CNC-machined aluminum clamping blocks, keeping total weight at 31.00 kg (68.34 lbs). Equipped with a decoupled primary mirror cell, dual Losmandy dovetail bars, and a 3-inch rotating focuser, it provides unyielding mechanical alignment.
Key Features of Omegon Pro RC 355/2845 Truss Ritchey-Chretien OTA
Engineered for large-aperture deep-sky astrophotography, this 14-inch Omegon Pro Truss Ritchey-Chrétien OTA pairs zero-expansion quartz optics with an aerodynamic carbon frame. Its decoupled primary cell and 3-inch rotating focuser maintain rigid optical alignment across large camera sensors during long imaging runs.
- 355mm (13.98 inches) aperture with 2845mm focal length and versatile f/8 optical speed
- True Ritchey-Chrétien optical design featuring dual hyperbolic quartz mirrors
- Enhanced multi-layer aluminum optical coatings achieving 94% enhanced reflectivity
- 169mm planar secondary mirror obstruction (47.61% diameter, 22.66% area)
- Open truss architecture combining carbon fiber rods and CNC aluminum clamping blocks
- 3-inch heavy-duty dual-speed rack and pinion focuser with 360-degree field rotator
- Primary mirror cell decoupled from focuser base with push-and-pull collimation hardware
- Dual Losmandy-style dovetail plates, stray light fabric shroud, and extension ring set included
14-Inch Hyperbolic Quartz Optics & Aerodynamic Truss Frame
The dual hyperbolic quartz mirrors eliminate coma and spherical aberration without requiring external lenses, while the open truss design equalizes mirror temperatures rapidly. This 14-inch Omegon Pro RC supports visual and photographic magnifications from 51x up to 710x.
3-Inch Rotating Focuser & Decoupled Primary Mirror Cell
Supporting heavy imaging trains requires an isolated optical cell structure. The Omegon Pro RC 355/2845 features a primary mirror cell decoupled from the focuser base, ensuring heavy drawtube accessories do not alter optical collimation. Its 3-inch rack and pinion focuser includes a built-in 360-degree field rotator for effortless camera framing.
- 3-inch heavy-duty dual-speed rack and pinion focuser with 360-degree field rotator
- Decoupled primary mirror cell with precision push-and-pull collimation screws
- Dual Losmandy-style dovetail plates and custom stray light fabric shroud included
Omegon Pro RC 355/2845 Truss Warranty
The Omegon Pro RC 355/2845 Truss Ritchey-Chretien OTA is backed by a 2-year limited warranty against material and manufacturing defects. The complete factory package contains the 355mm truss RC OTA, 3-inch heavy-duty focuser, dual Losmandy plates, stray light fabric shroud, focuser extension ring set, and step-down adapter collar blocks.
Omegon Pro RC 355/2845 Truss Ritchey-Chretien OTA Specs
| Brand | Omegon Pro |
| Full Model Code | Omegon Pro RC 355/2845 Truss Open-Frame Ritchey-Chrétien Optical Tube Assembly |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Ritchey-Chrétien (Hyperbolic Primary Mirror Layout with Hyperbolic Secondary Mirror) |
| Aperture | 355 mm (13.98 inches) |
| Focal Length | 2845 mm |
| Focal Ratio | f/8 |
| Optical Coatings | Enhanced Multi-Layer Aluminum Coating Matrix Achieving 94% Enhanced Reflectivity Levels |
| Glass Material | Premium Quartz Mirror Substrates featuring Near-Zero Thermal Expansion Coefficients |
| Secondary Mirror Obstruction | 169 mm |
| Secondary Mirror Obstruction by Diameter | 47.61% |
| Secondary Mirror Obstruction by Area | 22.66% |
| Resolving Power | 0.33 Arcseconds (Dawes), 0.39 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 14.6 |
| Highest Useful Magnification | 710x |
| Lowest Useful Magnification | 51x |
| Optical Tube Material | Open Truss Architecture comprising Carbon Fiber Rods mated to CNC-Machined Aluminum Clamping Blocks |
| Focuser Style & Mechanism | 3-inch Heavy-Duty Dual-Speed Rack and Pinion Focuser with 360-degree Field Rotator Interface |
| Mirror Lock Mechanism | Yes (Primary Mirror Cell Decoupled from Focuser Base / Precision Push-and-Pull Collimation Hardware) |
| Optical Tube Dimensions | 490 mm x 1030 mm |
| Optical Tube Weight | 31.00 kg (68.34 lbs) |
| Mount Attachment Type | Dual Heavy Losmandy-Style Universal Dovetail Plate Bars Fixed to Core Structural Rings |
| Finder Scope Specification | Not Included / Equipped with Dual Quick-Release Mounting Base Brackets for Autoguider Hardware |
| Included Accessories | 355mm Truss RC OTA, 3-inch Heavy-Duty R&P Focuser, Dual Losmandy Plates, Stray Light Fabric Shroud, Focuser Extension Ring Set, 2-inch and 1.25-inch Step-Down Collar Blocks |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Research-grade narrow-band deep-space astrograph installations, gathering extensive faint star data sets with a massive 14-inch open-cell configuration optimized against aerodynamic tube loading. |
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