StellaLyra 12'' f/5 Dobsonian
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StellaLyra 12'' f/5 DobsonianStellaLyra 12'' f/5 DobsonianStellaLyra 12'' f/5 Dobsonian
StellaLyra 12'' f/5 DobsonianStellaLyra 12'' f/5 DobsonianStellaLyra 12'' f/5 Dobsonian

StellaLyra 12" f/5 Dobsonian

£879.00
  (4 Reviews)
✓ 2 year warranty

:  

13x in stock shipped 1-2 working days

About this product

Model:  stellalyra_12_f5_dob_v2
Part Number:  GS980-D

The UK's BEST 12" Dobsonian telescope! 

Designed and manufactured to a very high standard by Guan Sheng Optical (GSO) in Taiwan. 

With a 12" aperture, this Dobsonian telescope has 44% more light-gathering ability than 10" models. Telescopes of this size are often affectionately referred to as 'light buckets'—an excellent choice for visual astronomy. 

Viewing the lunar surface will feel like you can reach out and scratch plaster! Venus and its phases are also viewable. In good seeing conditions, you can observe Mars with its surface shading and polar cap, Jupiter's weather bands and several of its Moons, and Saturn with its rings, including the Cassini division, are also clearly visible. So are many deep-sky objects, such as galaxies and nebulae. For many owners, this telescope will provide a lifetime of observing. 

All StellaLyra Dobsonian telescopes are fitted with a quality GSO aluminised parabolic primary mirror with a minimum reflectivity of 93% and a silicon-dioxide protective overcoat to ensure the surface remains bright for years.  

Collimation knobs on the primary mirror cell provide easy collimation adjustment without tools, and an integrated fan provides fast cooling. 

This 12” model also features an impressive CNC-machined 2" Crayford focuser with 1:10 dual-speed focus adjustment for smooth, precise focusing—and no image shift!

The focuser includes a 2" to 1.25" adapter, so you can use both 2" and 1.25" eyepieces and accessories. Brass compression rings grip them securely without marring their nosepieces. A convenient 35mm focus extender is also supplied so you can easily achieve focus when using most long focal length 2" eyepieces. 

Three fully multicoated eyepieces (1.25" 9mm Plössl, 1.25" 15mm Plössl, and 2" 30mm SuperView) are included, so views will be clear and sharp from the outset.  

The Dobsonian base is delivered flat-packed, is easy to assemble and has a convenient carry handle on each side. 

A robust roller-bearing assembly between two metal plates provides smooth, reliable azimuth adjustments, even after years of use. 

For altitude adjustment, a robust steel shaft and CNC-machined metal plates with large knurled tension adjustment knobs, one on each side, provide smooth, precise movements and adjustable tension. 

The mount also features a convenient balance adjustment mechanism with an engraved scale that enables the telescope to be moved forward or backward for precise balance. This is especially useful when changing from a small eyepiece to a large, heavy one or when adding a second finderscope or binoviewer. 

A Right-Angled Correct Image 8x50 finder scope is also included for comfort and convenience, so no cricked neck!  

 

FEATURES

  • 304mm (12") optical aperture
  • 1520mm focal length
  • f/5 focal ratio
  • 25% secondary mirror obstruction
  • Parabolic primary mirror with minimum 93% reflectivity
  • Aluminium and silicon dioxide (SiO2) protective mirror coatings
  • Sturdy primary mirror-cell with easy grip collimation knobs
  • Cooling fan brings the primary mirror to ambient temperature quickly for best performance
  • Rigid, steel telescope tube with 4-vane, all metal secondary Spider and adjustable primary cell
  • CNC-machined 2" dual-speed Crayford focuser with non-marring brass compression rings 
  • 2" to 1.25" adapter enables the use of both 2" and 1.25" eyepieces and accessories
  • 35mm focus extension enables focus when using long focal length 2" eyepieces
  • Smooth, stable Dobsonian mount with tension adjustments
  • Convenient four-slot eyepiece holder on the front and a carry handle on both sides of the mount
  • A carry handle is also fitted atop the telescope
  • Supplied with fully multicoated 1.25" 9mm Plössl, 1.25" 15mm Plössl, and 2" 30mm SuperView eyepieces
  • 8x50 Right-Angled Correct Image finderscope for comfort and convenience

Focuser

  • 2" dual-speed Crayford focuser
  • 10:1 fine focus adjustment for precise focusing
  • Crayford design provides smooth focusing with no image shift
  • Includes a 2" to 1.25" adapter so you can use 2" and 1.25" eyepieces and accessories
  • 35mm focus extension enables focus when using long focal length 2" eyepieces
  • Brass compression rings hold items securely without marring the barrels
  • A handy measurement scale makes it easy to remember focus positions when changing eyepieces

Dobsonian Mount

  • Supplied flat-pack but quick and easy to assemble
  • Altitude tension clutch on the sides provides smooth, accurate movement and easy adjustment to suit different payloads and personal preference
  • The azimuth axis (on the bottom) features a 'Lazy Susan' style roller bearing assembly for smooth 360º movement and an adjustable tensioner
  • A handle on each side makes the Dobsonian mount easy to move around the garden
  • A handy 4-position eyepiece holder on the front provides convenient storage for eyepieces and accessories

8x50 Right-Angled Finderscope

  • Straight-through finderscopes can be uncomfortable and inconvenient, so most StellaLyra Dobsonians are supplied with an 8x50 Right-Angle Correct Image finderscope—so no cricked neck! 
  • A large 50mm aperture helps spot dimmer targets
  • Cross-hair reticule for precise alignment
  • Two adjustment screws and a sprung loaded tensioner make it quick and easy to align the finderscope to the main telescope (it can be aligned during daytime when aimed at a distant pylon, but be careful not to point it anywhere near the Sun)!

Primary Mirror Cell

  • Robust primary mirror cell holds collimation well
  • Collimation is easily adjusted using oversize, easy-to-grip adjustment and locking knobs
  • The primary mirror cooling fan draws air over the mirror for faster cooling. It can be powered using the supplied AA battery holder (batteries not included) or a separate 12v DC power supply with a centre-positive 2.1mm/5.5mm DC jack

Other Accessories

  • 9mm and 15mm 1.25" 52º Plössl eyepieces with 6mm and 13mm eye-relief
  • 30mm 2" 68º Superview eyepiece with 22mm eye-relief
  • 35mm 2" focus extension tube with brass compression ring for eyepieces and accessories that require additional back focus distance
  • 8x AA battery holder with 2.1mm DC plug to fit the primary mirror cooling fan

Size Comparison: 

Telescope Field of View Simulator


What's in the box

  • 12" Newtonian Reflector Telescope
  • Dobsonian Mount
  • 8x50 Right Angled Erect Image Finderscope
  • 9mm 1.25" Super-Plossl Eyepiece
  • 15mm 1.25" Super-Plossl Eyepiece
  • 30mm 2" Superview Eyepiece
  • 35mm 2" Focus Extension tube
  • 2" to 1.25" Adapter
  • Cooling Fan & Battery Holder

Specifications

Model 12" f/5 Dobsonian
Optical design Newtonian Reflector
Aperture 304mm (12")
Focal ratio f/5
Focal length 1520mm
Primary mirror BK7 Parabolic primary mirror, minimum 93% reflectivity
Mirror coatings Aluminum and silicone dioxide (SiO2)
Secondary mirror Minimum 93% reflectivity
Secondary mirror holder 4-vane all metal spider
Secondary Mirror Obstruction 25%
Focuser 2" dual-speed Crayford
Mount Dobsonian mount with tension clutch control
Finderscope Right Angled, 8x50
Eyepiece 1 9mm 1.25" 52º Super-Plossl with 6mm eye-relief
Eyepiece 2 15mm 1.25" 52º Super-Plossl with 13mm eye-relief
Eyepiece 3 30mm 2" 68º Superview with 22mm eye-relief
Accessories 35mm 2" extension tube, 2" to 1.25" eyepiece adapter & 12v battery holder for the cooling fan
Tube outside diameter 356mm / 14"
Tube length 1450mm / 57"
Mount Base Height 640mm / 25.1"
Mount Base Diameter 635mm / 25"
Tube weight 19.5kg / 42lbs 16oz
Shipped size OTA 156cm x 50cm x 48cm / 61.4" x 19.7" x 18.9"
Shipped size Base 73cm x 73cm x 14cm / 28.7" x 28.7" x 5.5"
Shipped weight OTA 30kg / 66lbs 2oz
Shipped weight Base 20kg / 44lbs 1oz

Downloads / Manuals

Manual

StellaLyra 12" Dobsonian Assembly Manual V2

Customer reviews

Average Rating (4 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Returned without issue
23 January 2025  | 

I bought this because if the added light capability, without fully recognizing how large it would be in person and ultimately sent it back (without an issue, due to the professionalism of FLO)

My initial opinions of this are good. The build quality was great and the telescope feels premium! Plus it's black, which I think looks so much better!

If you buy this, please be aware you may need a secome person to help you carry it out. I didn't want to rest the OT itself on anything so held it while my partner moved the base. This wasn't a great experience, but thats not due to the telescope but instead how I was storing and using it.

I was worried about collimation, but it was really easy to get the hand of. (I opted for a Cheshire collimation eyepiece)

The base is a bit bulky and in the way for a small office space. So do consider that! Unfortunatly I only managed to test it out on a less than perfect weather night.

The return postage cost £100+ due to its size, but I accepted it as the item was perfect, and I was the reason for the return.

Return process was super smooth I was given a number to write on the box and then just shipped the item back, the refund cam pretty quick too. I was worried the telescope might get broken during shipping, however the packaging was more than enough to protect it.


Rating (max 5):  
Great Telescope
29 January 2023  | 

Finally decided to take the plunge and get myself a proper telescope and had settled on a 12" dob to give myself some room to grow into. When i was doing my research the Apertura D12 kept coming up as the best one to get but these aren't available in Europe. Then I found the Stella Lyra 12" which as far as I can see is basically exactly the same even down to including the RACI Finderscope as standard which most sellers don't seem to do.

The scope was delivered quickly by FLO and it's been great. I got the FLO Cheshire as an extra and collimating was easy enough as a first time telescope user once I followed some tutorials. The scope seems to hold its collimation well and I usually just have to do a slight adjustment to the primary at the start of each session. The included eyepieces are definitely enough to get you started. I like the 30mm in particular and still use it sometimes but the 9mm has a pretty narrow FOV so I decided to get the Baader Hyperion Mk IV Zoom + Barlow from FLO for a quick all round improvement. This made viewing objects like Jupiter much more comfortable and the view was better. I've since also added an APM 7mm UWA which works really nice with this scope.

It's definitely a pretty big scope but I don't have any issues moving it from inside the house to the back garden. I'd highly recommend getting some lifting straps as makes it way, way easier to carry. Overall the scope has been excellent to use and I'd highly recommend it even if you're just starting out in astronomy like me.


Rating (max 5):  
Stella Lyra 12” dobsonian
21 January 2023  | 

Having previously owned the 8” version of this scope, I was well aware of the great quality and optics of the scopes. I had a problem with the focuser on the new 12”, which was rapidly rectified by FLO. I fitted a Telrad on a 2” riser which in combination with the supplied excellent RACI, I’m now ready for first light. Great fast dispatch and delivery from FLO as is the norm.


Rating (max 5):  
Stellalyra 12
02 November 2022  | 

Really impressed with the telescope so far , great build quality and gives good views of deep sky objects even from light polluted sky. Planets look amazing even if the seeing is not great. also really like the 2 inch eyepiece that was part of the package. All thats left for me to do is take it to a dark sky to really see what this beast can do.

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