hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Hubble UL16 Premium Ultra Light Truss Dobsonian
#4871848 - 10/20/11 10:53 PM Attachment (193 downloads)
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Hubble UL16 Premium Ultra Light and Ultra Portable Truss Dobsonian System, at affordable price: $1995 Special Introduction Offer (The regular price is $2995)
Hubble UL16 Premium Dobsonian telescope is optimized to offer you high-quality, large-aperture telescopes designed 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 across the globe!
· A Premium, Light, Compact and Portable Design - About half the weight of traditional Dobsonian telescopes
· Outstanding Images - Premium quality, diffraction limited (with Strehl 0.95+) Newtonian optical systems will deliver stunning views of the heavens from dark sky sites
· Light, Strong, Compact and Extremely Portable - The Hubble UL16 features a precision-machined all-metal construction. Fully assembled the UL16 weighs at about 60 pounds. It has 8 rigid truss tubes and extremely strong and portable folding ALT bearing structure. It features a real mirror box for safe and convenient mirror protection, storage and transportation
· 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
· Fast Optics - The UL16 fast f/4.5 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.
· 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.
50% deposit at the order time, rest plus S&H before delivery. The delivery time is about 30 days.
Edited by hubble-optics (10/21/11 09:30 AM)
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4871857 - 10/20/11 11:03 PM Attachment (102 downloads)
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Why would you select a Hubble UL16?
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.
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 package!
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4871873 - 10/20/11 11:14 PM Attachment (85 downloads)
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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.
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.
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4871881 - 10/20/11 11:19 PM Attachment (84 downloads)
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Features of the UL16:
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. Completed with deluxe and environmentally friendly black powder coating, it is such a pleasant 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 brass focus control adjusts focus at a rate 10 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 45mm of travel distance.
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Jim7728
Postmaster
Reged: 04/10/05
Loc: Stoop Landing Observatory, NYC
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4872675 - 10/21/11 12:51 PM
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Impressive looking product and beautiful display background.
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4874370 - 10/22/11 12:36 PM Attachment (141 downloads)
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UL16 packed in the trunk.
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4874382 - 10/22/11 12:42 PM Attachment (122 downloads)
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UL16 with shroud.
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4875276 - 10/23/11 02:48 AM
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Specification:
- Optical design : Reflector
- Optical diameter : 406mm
- Focal length : 1829mm
- Focal ratio : f/4.5
- Optics type : Parabolic
- Eyepieces: Not included
- Optical quality : Diffraction limited++ (Strehl 0.95+ for the Primary, 1/10 lambada or for the secondary mirror)
- Finder scope : Not included
- Focuser : 2" dual-speed linear bearing Crayford
- Secondary mirror obstruction : 80 mm
- Secondary mirror obstruction by diameter : 19.7%
- Secondary mirror obstruction by area : 3.9%
- Mirror coatings/over-coatings : 92% Semi-Enhanced Aluminum coating on the primary and 96% Enhanced coating on the secondary mirror
- Tube material : Aluminum tube with black stainless steel knob screws
- Length of optical tube : 70.0 in.
- 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 collimation screws
Edited by hubble-optics (10/23/11 08:25 PM)
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4875300 - 10/23/11 04:16 AM
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A real benefit of our Ultra Light, Ultra Compact and Ultra Portable UL16 to you, a very reasonable worldwide shipping cost for the total system. Please understand the surface shipping is a great value, but may take more than 10 weeks for the delivery.
Country Surface(US$) Air (US$)
US 253 467
US(Hawaii) 253 394
Australia NA 463
Belgium 129 384
Brazil NA 527
Canada 134 401
Denmark 121 338
France 161 391
Germany 148 387
Italy 140 353
Japan 141 231
Korea 103 177
Lithuania NA 958
Mexico 130 462
Netherlands 133 346
New Zealand NA 890(*)
Norway 151 362
Philippines 109 163
Poland 142 350
Romania 192 430
Russia NA 804
Singapore 107 192
South Africa 176 562
Spain 143 408
Sweden 180 386
Switzerland 150 391
UK 172 443
* The exact cost depneds on your specific address
Edited by hubble-optics (10/23/11 11:59 PM)
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4875482 - 10/23/11 08:36 AM Attachment (119 downloads)
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We have done our homework!
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4878482 - 10/24/11 10:05 PM
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Here is more info and where to place your order:
http://hubbleoptics.com/UL16.html
Thank you,
Tong
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Juan Irias
newbie
Reged: 02/08/11
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4883076 - 10/27/11 10:18 AM
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Hello! How much can go lower in the altitude? What is the latitude range?
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: Juan Irias]
#4886037 - 10/28/11 08:35 PM Attachment (57 downloads)
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It can go from the zenith to horizontal!
Thanks,
Tong
Edited by hubble-optics (10/28/11 08:41 PM)
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4886046 - 10/28/11 08:44 PM Attachment (67 downloads)
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Pointing to Zenith.
Edited by hubble-optics (10/28/11 08:44 PM)
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Ira
Carpal Tunnel
Reged: 08/22/10
Loc: Mitzpe Ramon, Israel
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4887940 - 10/30/11 12:32 AM
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How do you balance the scope for different weight eyepieces? Looks very tempting. 
/Ira
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hubble-optics
Vendor- Hubble Optics
Reged: 05/02/07
Loc: Hong Kong, US
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: Ira]
#4890028 - 10/31/11 10:10 AM
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Hi Ira,
The UL16 is designed to be bottom heavier until a max load of 1.2kg (2.6 lbs) on the focuser, with the shroud installed. Unless you have very heavy load (The weight of heaviest Televue eyepiece, the 2” Ethos 21mm is 2.25 lb), you most likely only need a small counter weight (customer provided) on the secondary cage.
If you do have load heavier than 1.2 kg, then you may need some kind of counter weight (customer provided) loaded to the mirror box at the bottom.
In either case, a few pieces of steel chains, or a sand bag should work well
-Tong
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EdK
member
Reged: 09/28/09
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: hubble-optics]
#4902321 - 11/07/11 10:06 AM
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I am in discussion with this company to make a 14 inch optical set up for my still working CGE mount the total weight would be 37 pounds well within the limits of my mount...
Ed
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Traveler
Pooh-Bah
Reged: 08/19/07
Loc: The Netherlands
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: EdK]
#4902440 - 11/07/11 11:21 AM
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Good Luck Ed. These Hubble UL scopes looks very promising indeed.
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shahgazer
member
Reged: 04/09/05
Loc: Kuala Lumpur, Malaysia
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: Traveler]
#4934124 - 11/25/11 11:15 AM
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Hello,
Nice design. Just one question. Can we use the ServoCAT and Argo Navis with this scope?
Thanks
Edited by shahgazer (11/25/11 11:16 AM)
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dvb
different Syndrome.
Reged: 06/18/05
Loc: Vancouver, Canada
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Re: Hubble UL16 Premium Ultra Light Truss Dobsonian
[Re: shahgazer]
#4935094 - 11/25/11 11:57 PM
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My concern would be that the shroud does not extend up past the secondary and focuser - one of the places I'd be sure to flock if I wanted the best contrast. No doubt a wonderful scope at a dark sky site, but a problem in the city.
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