Instruments of Awe
Our revolutionary, high-performance solar telescopes put observatory-grade solar imaging directly into your hands. This is your window to our star, as you’ve never seen it before.
A No-Compromise Approach
Every instrument that bears the SOLEYE name is born from the same first-principles philosophy. The very same principles that guide the development of our mission-specific platforms for national observatories are at the heart of our telescopes for solar photography. Each one is engineered to a single standard: to deliver the purest possible signal. We do not iterate; we innovate, ensuring every instrument in our collection represents the pinnacle of optical and mechanical excellence.
SOLEYE 300 Dual-band
The Definitive Statement in Solar Imaging
A legendary instrument of uncompromising quality for the observer who demands the absolute pinnacle of performance. Its massive aperture and observatory-grade stability deliver a level of detail and clarity that transforms personal astrophotography into a legacy of iconic images.
Clear Aperture
300mm
Focal ratio
F/4
Wavelength
Dual-Band (H-alpha + Ca-K/H)
OTA Weight
14.5kg
OTA Assembly
Carbon Truss Anodized Aluminium Frame
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SOLEYE 300 CryoSOL
The Thermally Invisible Instrument
The ultimate evolution of the SOLEYE 300, featuring space-grade passive thermal control derived from our ESA Spark Funding initiative. Its proprietary coatings create a local micro-climate so stable it virtually disappears from the optical path.
Clear Aperture
300mm
Focal ratio
F/4
Wavelength
Dual-Band (H-alpha + Ca-K/H) or Custom Mission
OTA Weight
14.6kg
OTA Assembly
Carbon Truss Anodized Aluminium Frame with space-grade coating
Status
Limited production
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SOLEYE 230 Dual-band
The Expert’s Instrument
Defined by its novel and beautiful carbon fiber frame, it packs observatory power into a field-ready platform. It delivers uncompromised, professional-grade resolution for the serious imager.
Clear Aperture
230mm
Focal ratio
F/5
Wavelength
Dual-Band (H-alpha + Ca-K/H)
OTA Weight
7kg
OTA Assembly
Carbon fibre frame
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SOLEYE 200 Dual-band
The New Standard of Clarity
It offers the perfect balance of power and portability for the dedicated solar imager. Its aperture is ideally suited for capturing the entire solar disc in stunning detail, with enough resolution to reveal the intricate structures of prominences and flares.
Clear Aperture
200mm
Focal ratio
F/6
Wavelength
Dual-Band (H-alpha + Ca-K/H)
OTA Weight
8kg
OTA Assembly
Stainless steel frame
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SOLEYE 150 Dual-band
Portable, Accessible Quality
It is the ultimate “grab-and-go” instrument, meticulously engineered for travel without sacrificing the legendary SOLEYE optical quality. It’s the perfect companion for eclipse chasing and remote expeditions, delivering crisp, high-contrast images from a compact, effortless platform.
Clear Aperture
150mm
Focal ratio
F/6
Wavelength
Dual-Band (H-alpha + Ca-K/H)
OTA Weight
7kg
OTA Assembly
Stainless steel frame
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Find Your Ideal Instrument
| Feature | SOLEYE 150 | SOLEYE 200 | SOLEYE 230 | SOLEYE 300 |
|---|---|---|---|---|
| Primary Aperture | 150mm | 200mm | 230mm | 300mm |
| Frame Material | Rigid Steel | Rigid Steel | Carbon Fiber | CRFP / Aluminium |
| Best For | Expeditions | Full-Disc Imaging | High-Res Chromosphere | Professional / Research |
| Portability | Portable / Backpack | Portable / Field Ready | Portable / Field Ready | Portable / Observatory |
| Sub-Arcsecond Resolution | Medium 0.48″ (Ca-K)-0.8″ (H-alpha) |
High 0.36″ (Ca-K)-0.6″ (H-alpha) |
Expert 0.31″ (Ca-K)-0.52″ (H-alpha) |
Superior 0.24″ (Ca-K)-0.4″ (H-alpha) |
A Purpose-Built Architecture
Form follows function. The distinct, open architecture of a SOLEYE instrument isn’t just for aesthetics; it is a functional response to the challenges of daytime imaging. By eliminating the enclosure, we eliminate the micro-climate that blurs images, delivering a stability and sharpness that enclosed systems simply cannot match.
The Open-Truss Advantage
Traditional telescopes suffer from thermal expansion as the day heats up, causing focus shift that ruins long imaging sessions. We solved this by constructing our open architecture with Carbon Fiber Reinforced Polymer (CFRP) tubes. Chosen for their near-zero coefficient of system thermal expansion, these tubes ensure the frame remains geometrically constant even as temperatures rise. This mechanical stability allows you to shoot stable, focus-perfect time-lapses for hours without the constant need for readjustment.
The Dualband Advantage
Our primary mirror coating is a true engineering breakthrough: a genuine dualband system. Unlike standard mirrors, it features two distinct reflection peaks precisely tuned to the two most important wavelengths for solar photography. In all other ranges—including the bright green spectrum—the mirror is anti-reflective. This means it actively suppresses unused light and heat before it ever reaches your camera, reflecting only the critical signal. The result is a darker background, higher contrast, and a dramatic reduction in thermal load.
Ready for Your Rig
SOLEYE instruments are designed to integrate seamlessly into the modern astrophotographer’s workflow. Whether you shoot with ZWO, QHY, or Player One cameras, or mount on Sky-Watcher, iOptron, or 10Micron systems, our standard dovetails and back-focus spacing ensure compatibility. We build the instrument; you choose how to capture the data.
The Signature SOLEYE Look
While aperture defines resolution, it is the quality of the optics that defines contrast. The images below, captured with our flagship SOLEYE 300, demonstrate the breathtaking sharpness and dynamic range inherent in our design philosophy. This is the optical standard that governs every instrument in our lineup, from the portable 150 to the observatory-class 300.
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