The StellaLyra 4.5" f/4 Carbon Fibre Imaging Newtonian Reflector offers a highly portable and precise wide-field imaging solution for deep-sky astrophotographers. Designed and manufactured in Taiwan by Guan Sheng Optical (GSO), this compact OTA combines fast optics, a stiff carbon fibre tube, and integrated rotation for effortless positioning and performance.
Capture Wide-Field Deep Sky Targets with Ease
With its fast f/4 focal ratio and lightweight carbon fibre build, the StellaLyra 4.5" Newtonian is ideal for astrophotographers seeking detail and stability in a travel-friendly format. The internally blackened tube and oversized secondary mirror ensure high-contrast results, while the full-length Vixen dovetail and integrated tube rotation make framing and setup quick and flexible.
Key Features
High-Reflectivity Primary Mirror:
Features a 114mm parabolic mirror with 94% reflectivity and quartz (SiO₂) protective overcoat, offering bright, sharp imaging across the field.
Oversized Secondary Mirror:
41mm minor axis secondary with 94% reflectivity ensures uniform sensor illumination.
Carbon Fibre Tube:
Internally blackened for enhanced contrast. Stiff construction maintains collimation and focus stability.
Integrated Tube Rotation:
Quick, tool-free tube rotation system for effortless framing and camera positioning.
Dual-Speed Rack & Pinion Focuser:
Robust 2" focuser offers precise, slip-free control for heavy imaging payloads.
Collimation Friendly:
Primary mirror includes central marking to simplify alignment during setup.
Vixen-Style Mounting Bar:
Supplied with full-length Vixen-compatible dovetail and tube rings for easy mounting on standard astrophotography platforms.
Note: A coma corrector is recommended (not included) to achieve optimal imaging results at f/4.
Specifications
Model: 4.5" f/4 Imaging Newtonian
Optical Design: Newtonian Reflector
Aperture: 114mm (4.5")
Focal Ratio: f/4
Focal Length: 456mm
Primary Mirror: Parabolic, 94% reflectivity with quartz (SiO₂) coating
Secondary Mirror: 41mm Minor Axis, 94% reflectivity with quartz (SiO₂) coating
Resolution: 1.0 arc second
Limiting Magnitude: 12
Focuser: 2" Dual-Speed Rack & Pinion
Focus Point: 26mm above 1.25" adapter / 41mm above T2 thread (adapter removed)
Tube Dimensions:
• Outside Diameter: 127mm
• Length: 370mm
• Weight: 2.8kg
Mounting: Vixen-style dovetail bar and tube rings included
Warranty: 2 Years
What's in the Box
StellaLyra 4.5" Carbon Fibre Imaging Newtonian OTA
2" Dual-Speed Rack & Pinion Focuser
Integrated Tube Rotation Assembly
Full-Length Vixen-Style Dovetail Bar
CNC-Machined Tube Rings
The StellaLyra 4.5" f/4 Carbon Fibre Newtonian is purpose-built for deep-sky imaging with minimal weight and maximum flexibility. A compact powerhouse — ready to travel, align, and capture.
All our products come with a satisfaction guaranteed, no-questions-asked full refund policy for a full 30 days.
We use Priority FedEx premium or DPD Express shipping for all orders, and the product is packaged with an additional biodegradable cushion lining in the box.
Got questions? Read through our FAQ list to see if it's answered there! If not, please contact us via this form.
