Description
PRICES INCLUDE SHIPPING TO CANADA - ITEMS ARE SHIPPED DIRECT FROM MANUFACTURER
Exclusive Sandwich Mirror Technology
The lightweight sandwich mirror design cools dramatically faster than solid mirrors, minimizing thermal gradients and eliminating a major source of image distortion. Unlike fan-based cooling, this passive design achieves rapid and stable thermal equilibrium naturally — without introducing vibration.
Why this matters
One of the primary limitations in large-aperture telescopes is "mirror seeing" — turbulence caused by temperature differences between the mirror and the surrounding air. In changing conditions, a thick solid mirror may never fully reach equilibrium, preventing it from achieving its full optical performance. The sandwich mirror design minimizes this effect, allowing the system to reach optimal performance quickly and consistently, delivering sharper and more stable views without the need for active cooling.
Enhanced Optical Coatings
96% enhanced reflective coatings on both primary and secondary mirrors with precision-controlled dielectric layers. Maximum light throughput for bright, contrast-rich images on deep-sky targets.
18-Point Flotation Mirror Cell
Optimized 18-point flotation system with both sling and 90-degree pivoting lateral supports. Three-point rod-end collimation is completely independent from lateral support, eliminating the potato-chip astigmatism found in simpler designs. Housed in a real mirror box for safe transport.
All Metal Construction
CNC-machined 6063-T6 aluminum alloy truss tubes, structural steel mirror cell, and aluminum alloy OTA and mount structure. 8 rigid truss tubes and folding ALT bearing for extreme portability. Finished with environmentally friendly black powder coating.
Full Technical Details
| Optical Design | Reflector |
| Optical Diameter | 609.6mm (24") |
| Focal Length | ~2012mm |
| Focal Ratio | f/3.3 |
| Eyepiece Height at Zenith | 1955mm (~77") |
| Optics Type | Parabolic |
| Optical Quality | Diffraction limited++ (Strehl 0.95+, 1/10 lambda PV secondary) |
| Focuser | 2" dual-speed linear bearing Crayford |
| Secondary Obstruction | 127mm / 20.8% diameter / 4.3% area |
| Mirror Coatings | 96% Enhanced on both primary and secondary |
| Tube Material | 6063-T6 Aluminum Alloy, structural steel mirror cell |
| Optical Tube Length | ~2000mm (79") |
| Weight (Tube) | 61 kg |
| Weight (Assembled) | ~70 kg (~153 lbs) |
| Dawes Limit | 0.19 arcsec |
| Rayleigh Limit | 0.23 arcsec |
| Limiting Magnitude | 16.4 |
| Max Magnification | 1200x |
| Accessories | 8x50 Finder, Shroud, Wheelbarrow, Cushioned Grips (optional) |
| Other Features | Sling lateral support, push-pull brass knob collimation |
Why Select a Hubble UL24?
Unmatched Light Grasp
A full 24-inch diameter of optical surface (24.4" overall) — about 4% more optical surface and light gathering than any other 24" scope on the market. 9 times the light grasp of an 8" reflector.
Remarkably Portable
At only about 70 kg (1/3 the weight of classical Dobsonian telescopes), the UL24 folds into a compact package that fits in almost any car. The eyepiece is just 77" from the ground at zenith.
The Hubble UL24 is a serious telescope for a serious observer, yet is still easily transportable to dark sky locations by one person. The heaviest single component is the primary mirror at about 30 kg. This is the perfect combination of power and portability, which is a lifetime of exceptional observing in a compact 70-kg package.
Documentation
Instructions Manual
Dimensions
Additional Resources