- A Premium, Light, Compact and Portable Design - About half the
weight of traditional Dobsonian telescopes. Fully assembled the UL16
weighs at about 60 pounds.
- Outstanding Images - Premium quality, diffraction limited Newtonian
optical systems will deliver stunning views of the heavens from dark
- Exclusive Optical Technology - The UL16 features Hubble lightweight
sandwich mirror with an optimized thermal design that cools up to 10
times faster than the regular solid mirrors
- The UL16 optical system delivers bright images and features a short
tube keeping the eyepiece conveniently close to the ground
- Semi-Enhanced Coating on the Primary Mirror - The most
recommended (by professionals) 92% Semi-Enhanced Coating on the
primary mirror and 96% Enhanced coating on the secondary mirror.
- A precision-machined all-metal construction with 8 rigid truss tubes
and extremely strong and portable folding ALT bearing structure. It
features a real mirror box for safe mirror protection, convenient
storage and easy transportation
- Modular and Compact Design: The Hubble UL16 is delivered in
several preassembled modules. The entire systems can be
assembled easily and quickly, as little as a few minutes.
Premium Ultra Light
8 x 50 Straight Through Illuminated Finder Scope with Brackets and
A top quality 50mm achromatic finder offering an inverted and reversed
image, perfect for Newtonian Telescope. A deluxe quick release double-ring
Finder Bracket including a dovetail base is included. There will be $15
additional charge for the surface delivery, or $25 additional charge the air
The scale markings and open center of the 8 X 50 Straight Through Finder
allows you to measure distances and easily center an object in the field of
view. The brightness of the reticle can be adjusted, which is nice when you
are searching for fainter objects.
The illuminator screws into the end of the finder and can be removed easily
to change batteries. The deep red illumination can be adjusted for brightness.
Truss Tube Grips
0.9m (35.5"), slid-on round cushioned grips, made of vinyl foam, they
insulate, cushion vibration and protect the truss tubes. Free shipping when
ordered with system.
$120 + S&H
The strong stainless steel handles, two top quality 6" pneumatic tires with ball
bearing. The Shipping cost will be $70 for the surface delivery and $100 for
the air delivery, for US. The shipping cost will be different for other countries.
Made from the top quality Nylon/Lycra blended materials, it is one of the
options you would really like to have.
Free shipping when ordered with the system.
Truss Tube Carry Bag
Made from the deluxe waterproof Nylon materia with draw-string cord.
Free shipping when ordered with the system.
5-Star Artificial Star
$19.95 (free shipping if ordered with system)
It is really the time to have one, if you still don't have one yet!
Sorry, but It is not an option for UL16. You simply do not need one for our
Please note that the mirror box cover is not an option. We do NOT sell and
ship the mirror box cover. You can simply make one with cardboard paper or
Scope Storage Cover
$90 (free shipping when ordered with the system)
Made with nice and strong polyurethane coated nylon fabric; light reflecting,
water and dust resistant. A complete protection for your scope not only in the
storage but also in the field.
$45 (free shipping when ordered with the system)
A very nice and strong plastic mirror cover
Hubble SkuHub Wireless Digital Setting Circle
$199 + $45 S&H (Special offer when ordered with UL16)
Breakthrough Wireless Digital Setting Circle with revolutionary high
resolution, low power consumption ball bearing encoders at an inconceivable
More info here
Hubble SiTech and SkySafari based GOTO.
$1995 + Shipping ($55/$95)
Simply the most powerful GOTO system at an extremely affordable price.
More info here
Hubble UL16 Premium Dobsonian telescope is a high-quality, large-aperture
telescope optimized in a very light and compact package for extreme
portability. With a Hubble UL16, you are free to travel to your favorite
dark-sky sites anywhere in the world.
The UL16 is a perfect balance between a telescope with huge light-gathering
capability and unbeatable portability. It will be the telescope that gets taken
out of the garage or from the back of a car to be used frequently. It will
provide stunning views of the heavens and a lifetime of observing enjoyment.
The UL16 has a parabolic primary with a full 16-inch diameter of optical
surface, a generous 16.4” overall diameter; not an 16-inch blank with a
beveled and much smaller optical surface like all other 16" telescopes in the
market. It translates to 5% more optical surface than all other 16” scopes in
Hubble UL series has been designed to be as light and compact as possible,
making the task of transport to your favorite dark-sky site as easy as
possible. The heaviest component of the UL16 is the primary mirror, which
weighs in at about 25 pounds, and the entire telescope is only about 60
pounds, which is remarkably light for a 16-inch telescope. In addition, with its
fast focal ratio mirror, the Hubble UL16 telescope has an eyepiece location
that can almost always be reached when you are standing with both feet on
the ground (only 67" from the ground when the UL16 is pointed at zenith).
With the Hubble UL16, most NGC objects can be found from a dark sky site -
they may not be too obvious, but you can chase them down. The Hubble
UL16 will reveal the hints of color in bright emission nebula such as the Orion
Nebula and some of the brighter planetary nebulae (The Blue Snowball, The
Saturn Nebula and others), incredible detail on Jupiter and, using an H-beta
filter, a very distinct Horsehead nebula. Results will vary according to
observing conditions and other factors. The Hubble UL16 is a telescope that
can provide a lifetime of satisfying observing experiences in a 60-pound
Features of the UL16:
Exclusive Sandwich Mirror Technology: Our sandwich mirror technology
has been used to manufacture research-grade optical elements and proven
by over a half dozen years of successful applications at research facilities
such as NASA, California State Polytechnic University San Luis Obispo, for
the US Army, and in amateur telescopes around the world. Hubble sandwich
mirror’s open core and close back design not only allows air to circulate
through the mirror, but also provide the maximum structure strength to allow
a simpler mirror cell design. Our sandwich mirror will reach thermal
equilibrium up to 10 times faster than a traditional solid 16-inch mirror and
means the mirror can deliver great views even as the air around the
telescope is changing temperature.
Why is thermal equilibrium so critical? The main issue is "mirror seeing," the
turbulence seen through the eyepiece of the telescope when the air above
the mirror is different from the mirror itself. Since a sandwich mirror cools far
more rapidly than a solid mirror of the same thickness, this major source of
distortion is eliminated quickly, giving you sharp and stable views. With ever-
changing temperatures during observing or imaging, your thick and solid
mirror may never reach equilibrium, and never reach its full optical potential.
This is one of the major reasons why our lightweight-sandwich mirror has
superior optical performance in real world situations, even without an active
cooling system. (Active cooling systems, such as fans, introduce their own
problems, such as micro vibration, which may seriously degrade the image
quality.) Our sandwich mirrors reach equilibrium extremely fast, and without
any external disturbing aid.
Semi-Enhanced Optical Coatings: The Hubble UL16 primary mirror is
coated with the most recommended (by professionals) 92% Semi-Enhanced
optical coatings to assure it collects as many (while scattering as little)
photons as possible to focus it into a bright and contrast-rich image. The
optimal 92% Semi-enhanced coating has an over-coating of precision
controlled dielectric layer to maximize the reflectivity and provide excellent
chemical and mechanical protection for the mirror coating. A 96% enhanced
optical coating is applied on the secondary mirror.
Engineered Mirror Support: The UL16 has an extensively modeled and
optimized 6-point flotation system that provides more than adequate support
for the sandwich mirror. The three-point collimation system is completely
independent from the sling lateral support. It will totally eliminate the often-
found potato chip astigmatism introduced by sling belt when using the simple
3 pivoted bolts collimation system. In a simple pivoted bolts collimation
system, the collimation of the primary mirror may cause the sling belt to pull
the mirror axially on the mirror edge, bending the mirror to a potato-chip
shape, causing annoying astigmatism.
All Metal Construction: The UL16 mechanical structures have been
extensively modeled via 3D CAD and advanced FEA to provide the optimal
structure strength and stability. Machined with Computer Numerical Control
(CNC) technology and hand fitted to assure proper fit and finish. Super
strong T6063-T3 aluminum alloy truss tubes, structure steel mirror cell and
aluminum alloy OTA and mount structure. Completed with deluxe and
environmentally friendly black powder coating, it is such a pleasure to look at,
not to mention the enjoyment to look through.
Dual-Speed 2-inch Linear Drive Crayford Focuser: The Hubble UL16
comes with a precision dual-speed, 2-inch diameter focuser. It's a beautiful
piece of precision machining that enhances the viewing experience as well as
the overall impression of a premium quality instrument you'll have with this
telescope. This focuser is robust! It is a zero-backlash "Crayford-style"
design further enhanced with modern "linear bearings" meaning you get a
rock-solid, super smooth focusing experience that can handle the weight of
even the heaviest of modern eyepieces. Its tension, the pressure on the
drawtube, is preset to a very reasonable level, but adjustable to lock heavy
equipment in place if desired. The smaller stainless steel focus control
adjusts focus at a rate 8 times finer than the larger focus wheels. This fine
adjustment allows for critical focusing during high power visual observing or
for imaging applications. The focuser has 50mm of travel distance.
Which UL16, f/5 or f/4.5?
Advantages of f/5:
- Sharper images. It has about 30% less coma than UL16 f/4.5, no need
for a coma corrector at all.
- You save $500 over UL f/4.5!
- Smaller central obstruction, 2.76” v.s. 3.1” secondary mirror for f/4.5
- Easier to achieve perfect collimation
Advantages of f/4.5:
- No ladder is needed for most people; while you may need one-step
ladder for an f/5 when close to zenith direction.
- Wider FOV.
Both f/5 and f/4.5 will provide you the excellent views. The f/5 provides the
perfect view for the most demanding observer, without coma corrector. The
f/4.5 also provides a wonderful and wider view without coma corrector (some
people may notice small amount of coma at the edge of a wide angle
Eyepieces, but most people will not be bothered or even notice this).
With our unique two-section truss tubes for f/5 (one section truss for f/4.5),
f/5 is just as portable and strong as f/4.5. At the end, it is really your personal
Please note that some counter weight will be required for f/5 at the
bottom, which is NOT provided.
- Optical design : Reflector
- Optical diameter : 406.4mm
- Focal length : 1829mm (f/4.5), 2032mm (f/5)
- Focal ratio : f/4.5, f/5
- Eyepiece height at zenith: 1690mm / 66.5" (f/4.5), 1890mm / 74.5" (f/5)
- Optics type : Parabolic
- Eyepieces: Not included
- Optical quality : Diffraction limited++ (Strehl 0.95+ for the primary
mirror, 1/10 lambada or better for the secondary mirror)
- Finder scope : Not included
- Focuser : 2" dual-speed linear bearing Crayford
- Secondary mirror obstruction : 80 mm (f/4.5), 70mm (f/5)
- Secondary mirror obstruction by diameter : 19.7% (f/4.5), 17.3% (f/5)
- Secondary mirror obstruction by area : 3.9% (f/4.5), 3.0% (f/5)
- Mirror coatings/over-coatings : 92% Semi-Enhanced Aluminum coating
on the primary and 96% Enhanced coating on the secondary mirror
- Tube material : 6063-T6 Aluminum Alloy tubes with black zinc plated
steel knob screws; Aluminum Alloy main structure (OTA and mount)
and structure steel mirror cell.
- Length of optical tube : 70.0" (f/4.5), 78.0" (f/5)
- Weight, optical tube : 52.0 lbs
- Weight, fully assembled : 60.0 lbs.
- Additional, optional accessories : 8x50 Finder, Shroud, Wheelbarrow,
Vinyl foam Cushioned Grips
- Other features : Sling lateral support and deluxe push-pull brass knob
Shipping and Handling:
A real benefit of our Ultra Light, Ultra Compact and Ultra Portable UL16 to
you, a very reasonable worldwide shipping cost (at least for most of the
countries) for the total system. Please understand the surface shipping is a
great value, but may take more than additional 10 weeks for the delivery.
UL16 will be shipped in 3 boxes: the main structure, the truss tubes and the
All units will be shipped from Hong Kong!
$1247.50 (f/4.5), or $997.50 (f/5) deposit
at the order time, rest, including options
and shipping will be paid before the
delivery (~60 days after the deposit) via a
Please note that the 60 days delivery is the
estimated production lead time only which
does not include shipping transit time.
Please specify your requested options in
your payment for the deposit.
* Shipped via Fedex, the exact cost depends on your specific address.