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Omegon Pro RC 154/1370 Ritchey-Chretien OTA
Supplied as a standalone optical tube, the Omegon Pro RC 154/1370 Ritchey-Chretien OTA provides a 154mm hyperbolic reflector with 1370mm focal length and dual dovetail mounting.
- 154mm aperture provides 0.75-arcsecond resolution
- 1370mm focal length uses f/9 optics
- Ritchey-Chretien design uses hyperbolic mirrors
- Dual dovetails and extensions included
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Description
Dual hyperbolic quartz mirrors featuring near-zero thermal expansion power the Omegon Pro RC 154/1370 Ritchey-Chretien OTA coma-free reflector optical tube assembly. Designed in Germany, this f/9 astrophotography telescope features a 154mm (6.06 inches) aperture and a 1370mm focal length, delivering 0.75 arcsecond Dawes resolving power and reaching magnitude 12.7 for deep-sky imaging.
The Omegon Pro RC 154/1370 Ritchey-Chretien OTA features hyperbolic primary and secondary mirrors coated with 94% enhanced reflective multi-layer aluminum. Its roll-formed heavy-gauge steel cylinder shell contains internal anti-reflection stray light baffles and direct collimation retention screws. Equipped with an external 2-inch dual-speed Crayford focuser and a pre-installed Vixen-style dovetail bar, this 5.40 kg (11.90 lbs) optical tube assembly mounts securely onto standard equatorial saddles.
Key Features of Omegon Pro RC 154/1370 Ritchey-Chretien OTA
Engineered for compact deep-sky CMOS astrophotography, this 6-inch Omegon Pro Ritchey-Chrétien OTA pairs dual hyperbolic quartz optics with a 2-inch Crayford focuser. Its true aplanatic optical design eliminates coma and spherical aberrations, delivering edge-to-edge pinpoint star fields without secondary corrector lenses.
- 154mm (6.06 inches) aperture with 1370mm focal length and versatile f/9 optical speed
- Ritchey-Chrétien optical design featuring dual hyperbolic quartz mirror substrates
- Enhanced multi-layer aluminum optical coatings achieving 94% enhanced reflectivity
- 72mm planar secondary mirror obstruction (46.75% diameter, 21.86% area)
- 2-inch dual-speed Crayford friction drive focuser with 1:10 micro-gear reduction
- Fixed mirror cell layout eliminating image shift during focus adjustments
- Roll-formed steel cylinder shell with internal stray light anti-reflection baffles
- Vixen-style dovetail bar, 1.25-inch adapter, and three extension tubes included
True Aplanatic Ritchey-Chrétien Optical Design
The dual hyperbolic mirror configuration corrects spherical aberration and coma across the focal plane, eliminating off-axis star flaring. With pure mirror reflections that prevent chromatic dispersion, this Omegon Pro RC OTA supports useful magnifications from 22x up to 308x.
2-Inch Dual-Speed Crayford Focuser & Extension Tubes
Precise focus control is critical when capturing deep-sky astrophotography with CMOS cameras. The Omegon Pro RC 154/1370 OTA features an external 2-inch Crayford focuser with 1:10 micro-reduction that avoids primary mirror movement. Included extension tubes provide generous backfocus spacing for filter wheels, off-axis guiders, and dedicated imaging cameras.
- 2-inch dual-speed Crayford focuser with 1:10 precision micro-gear reduction
- Two 25mm and one 50mm extension tubes for customized backfocus spacing
- Pre-mounted Vixen-style dovetail rail for direct connection to astronomy saddles
Omegon Pro RC 154/1370 Warranty
The Omegon Pro RC 154/1370 Ritchey-Chretien OTA is backed by a 2-year limited warranty against material and manufacturing defects. The complete factory package contains the 154mm RC optical tube assembly, pre-mounted Vixen-style dovetail bar, 2-inch Crayford focuser, 1.25-inch adapter, two 25mm extension tubes, and one 50mm extension tube.
Omegon Pro RC 154/1370 Ritchey-Chretien OTA Specs
| Brand | Omegon Pro |
| Full Model Code | Omegon Pro RC 154/1370 Ritchey-Chrétien Reflector Optical Tube Assembly |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Ritchey-Chrétien (Hyperbolic Primary Mirror Layout with Hyperbolic Secondary Mirror) |
| Aperture | 154 mm (6.06 inches) |
| Focal Length | 1370 mm |
| Focal Ratio | f/9 |
| 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 | 72 mm |
| Secondary Mirror Obstruction by Diameter | 46.75% |
| Secondary Mirror Obstruction by Area | 21.86% |
| Resolving Power | 0.75 Arcseconds (Dawes), 0.90 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 12.7 |
| Highest Useful Magnification | 308x |
| Lowest Useful Magnification | 22x |
| Optical Tube Material | Roll-Formed Heavy-Gauge Steel Cylinder Shell with Internal Optical Anti-Reflection Stray Light Baffles |
| Focuser Style & Mechanism | 2-inch Dual-Speed Crayford Friction Drive Focuser with 1:10 Planetary Precision Micro-Gear Reduction |
| Mirror Lock Mechanism | Yes (Fixed Mirror Substrate Cell Layout Inapplicable to Shifting / Direct Collimation Retention Screws) |
| Optical Tube Dimensions | 180 mm x 490 mm |
| Optical Tube Weight | 5.40 kg (11.90 lbs) |
| Mount Attachment Type | Vixen-Style Dovetail Mounting Rail Installed Directly onto the Main Steel Tube Base |
| Finder Scope Specification | Not Included / Equipped with Dual Quick-Release Mounting Base Brackets for Autoguider Hardware |
| Included Accessories | 154mm RC OTA, Vixen-Style Dovetail Bar, 2-inch Crayford Focuser, 1.25-inch Adapter, Two 25mm Focuser Extension Tubes, One 50mm Focuser Extension Tube |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Compact deep-sky CMOS astro-imaging runs, deploying a dual hyperbolic design tracking configuration to eliminate spherical and coma aberrations without secondary corrector matrices. |
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