Hubble UL12 – 12" Lightweight Reflector Telescope

Hubble UP12 – An Ultra-Portable 12" Dobsonian Telescope

The Hubble UP12 is a premium 12-inch Dobsonian designed for observers who want serious optical performance in an exceptionally compact and travel-friendly form. Weighing just 14.5 kg) fully assembled, the UP12 delivers true large-aperture performance in a package that can be transported, stored, and deployed with ease.

Once disassembled, the UP12 can be packed into airline-approved luggage, making it one of the most portable 12-inch telescopes available. This is a genuine “take anywhere” instrument for dark-sky trips, remote expeditions, and observers who value performance without bulk.

Light, Compact and Truly Portable

The UP12 is less than half the weight of a traditional 12-inch Dobsonian. Its modular construction allows the entire system to be assembled in just a few minutes, with no heavy components and no complex setup.

All major structural elements are made from precision-machined aluminium alloy, providing excellent rigidity while keeping weight to an absolute minimum. The result is a telescope that feels effortless to transport, yet remains mechanically stable at high magnifications.

Optical Performance

The UP12 uses a premium parabolic primary mirror, individually tested and finished to achieve diffraction-limited performance (Strehl 0.95+). The secondary mirror is specified to 1/10 wave or better, delivering high contrast and sharp stellar images across the field.

Both mirrors receive 96% enhanced reflective coatings, maximising light throughput and reducing scatter. From a dark sky site, the UP12 is capable of revealing most NGC objects, subtle structure in bright nebulae, fine planetary detail on Jupiter and Saturn, and even challenging targets such as the Horsehead Nebula when used with appropriate filters.

A Perfect Balance of Power and Portability

The UP12 gathers around 44% more light than a 10-inch telescope, yet remains dramatically smaller and lighter than traditional 12-inch designs. Its full 12-inch optical surface (with a generous 12.4-inch overall diameter) provides slightly more true light-gathering area than many mass-produced 12-inch mirrors.

This balance makes the UP12 a telescope that actually gets used. It is large enough to deliver meaningful deep-sky performance, yet portable enough to be taken out frequently without hesitation.

Specs:

Hubble UL14g – 14" Lightweight Reflector Telescope

The Hubble UL14g is a premium 14-inch Dobsonian telescope designed for serious visual observers who want substantial aperture in a system that remains genuinely portable. Combining advanced mirror technology with precision-machined construction, the UL14g delivers impressive deep-sky and planetary performance in a compact, travel-friendly design.

Optical Performance

At the heart of the UL14g is a full 14-inch parabolic primary mirror featuring Hubble’s exclusive Sandwich Mirror Technology. This lightweight yet rigid design achieves diffraction-limited performance (Strehl 0.95+) while reaching thermal equilibrium up to ten times faster than traditional solid mirrors. Faster cooldown means reduced mirror seeing and sharper, more stable views shortly after setup.

Both primary and secondary mirrors feature 96% enhanced reflective coatings, maximising light throughput and contrast while minimising scatter. This results in brighter galaxies, improved nebular structure, and high-contrast planetary detail even at high magnifications.

Engineered for Precision

The UL14g uses a real mirror box and precision flotation mirror support system to evenly distribute load across the primary mirror, minimising deformation and preserving optical accuracy across the sky. The structure is built from CNC-machined aluminium components with a steel mirror cell, providing excellent rigidity while remaining exceptionally lightweight.

Eight rigid truss tubes ensure stable collimation, while the large altitude bearings provide smooth and predictable motion during tracking.

Smooth, Accurate Focusing

The UL14g is equipped with a 2-inch dual-speed Crayford focuser with linear bearings, delivering smooth, backlash-free focusing. Fine focus control makes it easy to achieve critical focus at high power and supports heavy wide-field eyepieces without flex or slippage.

Big Aperture, Exceptional Portability

Despite its 14-inch aperture, the UL14g is remarkably easy to transport and set up. The modular truss-tube design breaks down into compact components that can be assembled in just a few minutes without tools. The heaviest single component is the primary mirror, weighing around 7 kg, making solo transport realistic for most observers.

With its fast f/4.6 focal ratio, the eyepiece height remains accessible at all times — just 60 inches at zenith — allowing comfortable observing with both feet on the ground.

Unmatched Observing Potential

The UL14g collects approximately 36% more light than a 12-inch telescope and nearly double that of a 10-inch, allowing significantly fainter objects and finer details to be resolved. From dense globular clusters to delicate dust lanes in distant galaxies, the UL14g reveals a level of structure that smaller instruments simply cannot match.

From dark-sky sites, most NGC objects are within reach. Bright emission nebulae show subtle hints of colour, planetary nebulae display internal structure, and Jupiter reveals fine banding and atmospheric detail. With an H-beta filter, even challenging targets like the Horsehead Nebula become achievable under good conditions.

The UL14g strikes a rare balance between serious aperture and true portability, making it a telescope that gets used often, not one that stays in storage.

Push-To and Go-To Options

Guided Push-To Version

The UL16 Guided Push-To version features the SkyHub2 digital setting circle system, providing accurate real-time positioning without motorised tracking. High-resolution (8192 PPR) encoders on both axes continuously update your telescope’s position in compatible planetarium software.

Alignment is quick and intuitive using a one-star or optional two-star alignment. The system works with SkySafari, Stellarium, Cartes du Ciel, TheSky, and other ASCOM-compatible software on Windows, macOS, Android, and iOS devices. Power consumption is extremely low, allowing up to 100 hours of operation from a 15,000 mAh USB power bank. WiFi and Bluetooth are supported (WiFi only for iOS).

Automatic Go-To Version

The UL16 Go-To version adds fully motorised pointing and tracking with a smart hand controller featuring a 30,000-object database. Multi-star alignment (1–9 stars) ensures precise pointing accuracy, while built-in encoders and a real-time clock maintain accurate sidereal, lunar, and solar tracking rates.

Control the system via WiFi or Bluetooth using SkySafari, Stellarium, or ASCOM/INDI-compatible software on Windows, macOS, Linux, iOS, or Android. Adjustable slew and guide speeds, spiral search, and park/unpark functionality provide smooth, precise operation for extended observing sessions.

Specifications (UL14)

Hubble UL16 – 16" Lightweight Reflector Telescope

The Hubble UL16 is a made-to-order 16-inch Dobsonian telescope built for serious visual observers who want maximum aperture without sacrificing portability. Combining advanced mirror technology with precision engineering, the UL16 delivers exceptional deep-sky and planetary performance in a surprisingly manageable package.

Optical Performance

At the heart of the UL16 is a full 16-inch parabolic primary mirror featuring Hubble’s exclusive Sandwich Mirror Technology. This lightweight yet rigid design achieves diffraction-limited performance (Strehl 0.95+) while reaching thermal equilibrium up to ten times faster than traditional solid mirrors. Faster cooldown means reduced mirror seeing and sharper, steadier views sooner after setup.

Both primary and secondary mirrors feature 96% enhanced reflective coatings, maximising light throughput and contrast while minimising scatter. The result is brighter galaxies, improved nebular detail, and high-contrast planetary views even at high magnification.

Engineered for Precision

A carefully designed flotation mirror support system combined with independent collimation ensures the primary mirror is evenly supported, minimising astigmatism and maintaining optical accuracy across the sky. The UL16’s robust construction uses CNC-machined aluminium structural components and a steel mirror cell, providing excellent rigidity without unnecessary mass.

Smooth, Accurate Focusing

The UL16 is equipped with a 2-inch dual-speed Crayford focuser featuring linear bearings for smooth, backlash-free operation. Fine focus control allows precise adjustment at high magnifications and works seamlessly with heavy eyepieces or imaging accessories.

Big Aperture, Thoughtful Portability

Despite its impressive aperture, the UL16 is designed with transport in mind. The truss-tube construction breaks down easily for travel, while the fast focal ratios keep eyepiece height within a comfortable range. Whether observing from your backyard or transporting to dark skies, the UL16 balances power with practicality.

Unmatched Observing Potential

With significantly more light-gathering power than a 14-inch telescope, the UL16 reveals faint galaxies, subtle nebular structure, and fine planetary detail that smaller instruments simply cannot match. From resolving globular clusters to tracking delicate dust lanes in distant galaxies, the UL16 is built for observers who want to go deeper.

Push-To and Go-To Options

Guided Push-To Version

The UL16 Guided Push-To version features the SkyHub2 digital setting circle system, providing accurate real-time positioning without motorised tracking. High-resolution (8192 PPR) encoders on both axes continuously update your telescope’s position in compatible planetarium software.

Alignment is quick and intuitive using a one-star or optional two-star alignment. The system works with SkySafari, Stellarium, Cartes du Ciel, TheSky, and other ASCOM-compatible software on Windows, macOS, Android, and iOS devices. Power consumption is extremely low, allowing up to 100 hours of operation from a 15,000 mAh USB power bank. WiFi and Bluetooth are supported (WiFi only for iOS).

Automatic Go-To Version

The UL16 Go-To version adds fully motorised pointing and tracking with a smart hand controller featuring a 30,000-object database. Multi-star alignment (1–9 stars) ensures precise pointing accuracy, while built-in encoders and a real-time clock maintain accurate sidereal, lunar, and solar tracking rates.

Control the system via WiFi or Bluetooth using SkySafari, Stellarium, or ASCOM/INDI-compatible software on Windows, macOS, Linux, iOS, or Android. Adjustable slew and guide speeds, spiral search, and park/unpark functionality provide smooth, precise operation for extended observing sessions.

Choosing Your Focal Ratio: f/5 or f/4.5

The UL16 is available in f/5.0 or f/4.5, allowing you to tailor the telescope to your observing style.

Why choose f/5?

• Approximately 30% less coma than the f/4.5 version

• No coma corrector required for most observers

• Lower cost, saving around $500

• Smaller central obstruction (2.76" secondary vs 3.1" on f/4.5)

• Optimised for observers seeking the cleanest possible visual performance

Why choose f/4.5?

• Lower eyepiece height, no ladder required for most users

• Wider true field of view, ideal for large nebulae and star fields

• Slightly more compact overall system

• Coma is mild and often unnoticed by most observers without a corrector

Both focal ratios deliver outstanding views. The f/5 prioritises ultimate optical cleanliness, while the f/4.5 emphasises comfort and wide-field observing. Thanks to Hubble’s two-section truss design for f/5 (single-section for f/4.5), both versions remain equally portable and rigid.
Please note that counterweights are required for the f/5 configuration and are not included.

Specifications (UL16)

Hubble UL18 – A Lightweight 18" Dobsonian Telescope

The Hubble UL18 is a made-to-order 18-inch Dobsonian telescope, built specifically for serious visual observers who want true observatory-class performance in a portable, transportable design.

With a massive 18-inch primary mirror, the UL18 gathers over five times more light than an 8-inch telescope, and more than twice the light grasp of a 12-inch, unlocking faint galaxies, delicate nebular structure, and extreme planetary detail that simply isn’t possible with smaller apertures.

Light, Strong, and Surprisingly Portable

Each UL18 is custom built to order using precision-machined all-metal components. The truss construction uses eight rigid aluminium truss tubes and a folding altitude bearing structure to provide exceptional stiffness while keeping overall weight under control.

The large mirror box design protects the primary mirror during transport, while the modular layout allows the telescope to be broken down quickly for storage or travel. Fully assembled, the UL18 weighs just ~33 kg, making it one of the most portable 18-inch class Dobsonians available.

Optical Performance

At the heart of the UL18 is a premium parabolic primary mirror, individually tested and finished to achieve diffraction-limited performance (Strehl 0.95+). The secondary mirror is specified to 1/10 wave or better, ensuring excellent contrast and pinpoint stellar images across the field.

Both mirrors receive 96% enhanced reflective coatings, maximising light throughput while reducing scatter. This results in brighter deep-sky views, improved low-contrast detail, and excellent planetary performance even at extreme magnifications.

Choose Your Telescope Control

The UL18 can be customised to suit your observing style. You can use it fully manually, or opt for Guided Push-To or Automatic Go-To systems.

Manual Mode
Even without electronics, the UL18 is a precision Dobsonian with smooth, stable bearings and an easy-to-use truss design. You can enjoy the classic hands-on experience, exploring the night sky exactly as the great visual observers have for decades.

Guided Push-To Version
The UL18 Guided Push-To version features the SkyHub2 digital setting circle system, providing accurate real-time telescope positioning without motorised tracking. High-resolution 8192 PPR encoders on both axes continuously update your telescope’s position in compatible planetarium software.

• Alignment is fast and intuitive using a simple one-star alignment, with optional two-star alignment for increased accuracy.

• Works with SkySafari, Stellarium, Cartes du Ciel, TheSky, and other ASCOM-compatible software on Windows, macOS, Android, and iOS devices.

• Extremely low power consumption: up to 100 hours from a 15,000 mAh USB power bank.

• WiFi and Bluetooth supported (WiFi only for iOS devices).

Automatic Go-To Version
The UL18 Go-To version adds fully motorised pointing and tracking for a completely hands-free observing experience. It includes a smart hand controller with a 30,000-object database and supports advanced 1–9 star alignment for precise pointing accuracy.

• Built-in encoders and a real-time clock maintain accurate sidereal, lunar, and solar tracking rates.

• Control via WiFi or Bluetooth using SkySafari, Stellarium, or ASCOM/INDI-compatible software on Windows, macOS, Linux, iOS, or Android.

• Adjustable slew and guide speeds, spiral search, and park/unpark functionality provide smooth, precise movement for extended observing sessions.

Choosing Your Focal Ratio: f/4.0 or f/4.5

The UL18 is available in f/4.0 or f/4.5, allowing you to prioritise either maximum comfort or maximum optical refinement.

Why choose f/4.0?

• Lower eyepiece height – no ladder required for most users

• More compact overall system

• Wider true field of view

• Ideal for observers who value comfort and portability

Why choose f/4.5?

• Reduced coma across the field

• Slightly smaller secondary obstruction

• Better suited to high-power planetary and lunar observing

• Preferred by observers seeking ultimate optical purity

Both versions deliver extraordinary performance. The f/4.0 favours ergonomic comfort and wide-field observing, while the f/4.5 favours optical cleanliness and contrast. The choice ultimately comes down to observing style and personal preference.

Specifications (UL18)

Hubble UL20 – A Lightweight 20" Dobsonian Telescope

The Hubble UL20 is a made-to-order 20-inch Dobsonian telescope designed for observers who want truly extreme aperture without the bulk and weight of traditional large Dobsonians.

With its enormous 20-inch primary mirror, the UL20 gathers over six times more light than an 8-inch telescope, and almost three times the light grasp of a 12-inch, revealing galaxies, nebulae, and fine structure at a level normally reserved for permanent observatory installations.

A Premium, Light, Compact and Portable Design

Despite its size, the UL20 is engineered to remain practical and transportable. The precision-machined all-metal truss construction delivers exceptional rigidity while keeping overall weight to around half that of traditional 20-inch Dobsonians.

The modular truss design allows the telescope to be broken down for transport, while the reinforced mirror box protects the primary mirror during storage and travel. This makes the UL20 a genuine “portable observatory” for dedicated deep-sky observers.

Optical Performance

At the heart of the UL20 is a premium parabolic primary mirror, individually tested and finished to achieve diffraction-limited performance (Strehl 0.95+). The secondary mirror is specified to 1/10 wave or better, ensuring excellent contrast and pinpoint stellar images across the field.

Both mirrors receive 96% enhanced reflective coatings, maximising light throughput while reducing scatter. This results in breathtaking deep-sky views, extremely faint object detection, and exceptional planetary performance even at very high magnifications.

Choose Your Telescope Control

The UL20 can be customised to suit your observing style. You can use it fully manually, or opt for Guided Push-To or Automatic Go-To systems.

Manual Mode
Even without electronics, the UL20 remains a precision Dobsonian with smooth, stable bearings and a well-balanced truss structure. This allows for classic hands-on observing with direct control and intuitive sky navigation.

Guided Push-To Version
The UL20 Guided Push-To version features the SkyHub2 digital setting circle system, providing accurate real-time telescope positioning without motorised tracking. High-resolution 8192 PPR encoders on both axes continuously update your telescope’s position in compatible planetarium software.

• Fast one-star alignment, with optional two-star alignment for higher accuracy

• Compatible with SkySafari, Stellarium, Cartes du Ciel, TheSky, and other ASCOM software

• Works on Windows, macOS, Android, and iOS devices

• Extremely low power consumption, up to 100 hours from a 15,000 mAh USB power bank

• WiFi and Bluetooth supported (WiFi only for iOS devices)

Automatic Go-To Version
The UL20 Go-To version adds fully motorised pointing and tracking for a hands-free observing experience. It includes a smart hand controller with a 30,000-object database and supports advanced 1–9 star alignment for high pointing accuracy.

• Built-in encoders and real-time clock maintain accurate sidereal, lunar, and solar tracking rates

• Control via WiFi or Bluetooth using SkySafari, Stellarium, or ASCOM/INDI software

• Compatible with Windows, macOS, Linux, iOS, and Android

• Adjustable slew and guide speeds, spiral search, and park/unpark functionality

Choosing Your Focal Ratio: f/3.3, f/3.7 or f/4.2

The UL20 is available in three focal ratios, allowing you to balance comfort, optical performance, and field of view.

Why choose f/4.2?

• Sharper images with almost 50% less coma than f/3.7

• Smaller central obstruction (3.5" secondary vs 4.0" on f/3.7)

• Easier to achieve perfect collimation

• Better suited for high-magnification lunar and planetary observing

• A coma corrector is helpful but not essential for many users

Why choose f/3.3 or f/3.7?

• No ladder required at all for f/3.3; only a small step may be needed for f/4.2 near zenith

• Extremely wide true field of view, especially with f/3.3

• Ideal for sweeping large nebulae and rich Milky Way fields

All three versions deliver extraordinary performance. A coma corrector is strongly recommended for the UL20 f/3.3, while the f/4.2 prioritises optical cleanliness and ease of use.

Thanks to Hubble’s two-section truss design for f/4.2 (single-section for f/3.3 and f/3.7), all versions remain equally rigid and transportable. Please note that counterweights may be required for balance, depending on configuration, and are not included.

Specifications (UL20)

Hubble UL24 – A Lightweight 24" Dobsonian Telescope

The Hubble UL24 is a made-to-order 24-inch Dobsonian telescope, designed for experienced observers who want truly extreme aperture without sacrificing transportability.

With a huge 24-inch primary mirror, the UL24 delivers around nine times the light grasp of an 8-inch telescope and four times that of a 12-inch, revealing ultra-faint galaxies, subtle nebular structure, and fine detail in planetary nebulae that smaller instruments simply cannot reach.

Light, Strong, and Surprisingly Portable

The UL24 features a precision-machined all-metal construction with eight rigid aluminium truss tubes and an extremely strong folding altitude bearing structure. Despite its massive aperture, the complete telescope weighs only around 70 kg, making it dramatically lighter than traditional 24-inch Dobsonians.

A real mirror box protects the primary mirror during transport, while the modular design allows the telescope to be broken down into manageable components for storage and travel. The heaviest single component is the primary mirror at around 30 kg, allowing one person to realistically transport the system to dark-sky locations.

Optical Performance

At the heart of the UL24 is a premium parabolic primary mirror with a full 24-inch optical surface and an overall diameter of 24.4 inches. This provides around 4% more true optical area than many other 24-inch designs that use undersized optical surfaces.

Each mirror is individually tested and finished to achieve diffraction-limited performance, with a Strehl ratio of 0.95+ for the primary and 1/10 wave or better for the secondary. Both mirrors receive 96% enhanced reflective coatings, maximising light throughput and contrast while reducing scatter.

The fast f/3.3 focal ratio keeps the eyepiece height to just 1955 mm at zenith, allowing most observers to use the telescope without a ladder while still enjoying extreme aperture.

Choose Your Telescope Control

The UL24 can be customised to suit your observing style. You can use it fully manually, or opt for Guided Push-To or Automatic Go-To systems.

Manual Mode

Even without electronics, the UL24 remains a highly refined Dobsonian with smooth, stable motion and precise balance. Manual observing delivers the classic deep-sky experience at a scale few observers ever reach.

Guided Push-To Version

The Guided Push-To version uses the SkyHub2 digital setting circle system, providing accurate real-time positioning without motorised tracking. High-resolution encoders on both axes feed live position data into compatible planetarium software.

Alignment is quick and intuitive using one- or two-star alignment. The system works with SkySafari, Stellarium, Cartes du Ciel, TheSky, and other ASCOM-compatible software on Windows, macOS, Android, and iOS devices.

Power consumption is extremely low, allowing up to 100 hours of operation from a standard USB power bank. Both WiFi and Bluetooth are supported.

Automatic Go-To Version

The Go-To version adds fully motorised pointing and tracking for hands-free observing. A smart hand controller with a 30,000-object database supports multi-star alignment for highly accurate pointing.

Built-in encoders and a real-time clock maintain accurate sidereal, lunar, and solar tracking. The system can be controlled via WiFi or Bluetooth using SkySafari, Stellarium, or ASCOM/INDI-compatible software on Windows, macOS, Linux, iOS, or Android.

Adjustable slew and guide speeds, spiral search, and park/unpark functionality ensure smooth, precise operation during long observing sessions.