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5/14/2024 7:08:10 AM
BRESSER Messier 12 inch Dobsonian telescope released
BRESSER Messier 12 inch Dobsonian telescope released


BRESSER Messier 12 inch Dobsonian telescope released

Tuesday, May 14, 2024

Richard Harris Richard Harris

The new BRESSER Messier 12" Dobsonian enhances its series with a lightweight fiberglass tube for great portability. Despite its affordability, it offers features and quality found in pricier models. With a 305 mm aperture, it excels in observing deep-sky objects. Its versatile design supports astrophotography and includes essential accessories for immediate use.

BRESSER has recently unveiled its new Dobsonian telescope, designed to impress astronomers of all levels. This advanced telescope features a large 305 mm parabolic primary mirror that delivers exceptional clarity and detail. It comes equipped with a 2.5" HEX focuser for precise and smooth adjustments, allowing for better viewing experiences. The telescope also boasts a very lightweight GRP telescope tube, making it easy to transport and handle. Perfect for both amateur stargazers and seasoned astronomers!

Highlights of the new BRESSER Dobsonian telescope:

  • Newtonian Optics: Equipped with a 305 mm parabolic primary mirror for clear, sharp images.
  • 2.5" HEX Focuser: Features a rack and pinion drive for precise focusing.
  • Lightweight GRP Telescope Tube: Easy to transport, ideal for on-the-go stargazing.
  • Smooth Movement: Large altitude wheels and AZ needle bearings for effortless tracking of celestial objects.
  • 9-Point Mirror Cell: Ensures perfect alignment and optimal optical performance.
  • Versatile Mounting Options: Tube clamps enable use on equatorial mounts.
  • Quick Assembly: Rocker box with metal connectors can be dismantled and reassembled in minutes.
  • High-Quality Optics: Diffraction-limited with a Strehl ratio greater than 0.8.
  • Solar Observation: Includes an aperture solar filter and new hybrid viewfinder shoes.
  • Dual Purpose: Suitable for both night and solar observations.


BRESSER Messier 12 Dobsonian Powerful and portable

BRESSER Messier 12" Dobsonian: Powerful and portable

The BRESSER Messier 12" Dobsonian enhances the popular telescope series, offering great portability with its lightweight fiberglass telescope tube.

Despite its affordability, this telescope delivers an impressive array of features and quality typically found in more expensive models. With a powerful 305 mm aperture, it offers significantly greater light-gathering capacity than smaller models, allowing you to explore beyond the moon and planets to observe globular clusters, nebulae, and galaxies with enhanced brightness. Details in most deep-sky objects become visible, with globular clusters resolved into individual stars and gas nebulae showing structure.

The telescope features a large Hexafoc focuser with a 65 mm aperture, eliminating obstruction from the focuser tube even with wide-field eyepieces. The large altitude wheels effortlessly support heavier eyepieces, and the tube can be balanced quickly by adjusting within the tube clamps, accommodating numerous accessories like a binocular attachment. The focuser's rigidity simplifies focusing, making it suitable for photography.

For astrophotography enthusiasts, the altitude wheels can be unscrewed, and the tube can be attached to an equatorial mount using a dovetail bar. An optional 10:1 gear reduction for the focuser is available for precision demands. The use of the Hexafoc focuser in this device represents a significant advancement for this price range.

Ready for immediate use, the telescope includes a 6x30 finder and a 25 mm SPL eyepiece. Various other viewfinders can be added using the two new hybrid viewfinder shoes (Art. 0620158) included as standard.

The BRESSER Messier 12" Dobsonian is designed for compact transport, with the rocker box easily dismantled into a flat package using metal quick-release connectors.

This telescope sets new standards in versatility, performance, and user-friendliness within its price class. It includes a high-quality objective solar filter for safe observation of sunspots, eclipses, and planetary transits, making it a premium choice for both night and solar observation.

While "Newtonian" reflector telescopes excel in astronomical observations, they are not suited for daytime nature and landscape observations. For such purposes, BRESSER refracting telescopes are recommended.

Features of the new 12 BRESSER Messier

Features of the new 12" BRESSER Messier:

  • Type: Reflector telescope 
  • Telescope for night and solar observation
  • Lightweight but very stable GRP telescope tube
  • Primary mirror diameter: 12" (305 mm) parabolic main mirror 
  • Focal length: 1,525 mm 
  • Aperture ratio: f/5 
  • Maximum useful magnification: 610x 
  • Theor. resolving power: 0.45 arcseconds 
  • Easy to balance the tube by sliding it inside the tube rings
  • Visual limiting magnitude: 14.5 mag 
  • Tube: GRP tube with adjustable tube rings and aluminium altitude bearings 
  • Focuser: 2.5" HEXAFOC focuser with 2" and 1 1/4" adapter 
  • Shifting-free focusing even with heavy accessories 
  • Secondary mirror bracket: very thin 4-arm steel spider 
  • Tube rings and altitude wheels made from aluminum
  • Different sized adjustment and counter screws on the mirror cell 
  • Use of the optics also on EQ mounts (with optional dovetail bar) 
  • Mount: Dobsonian system 
  • Dismantlable rocker box 
  • Accessory tray for one 2" and two 1 1/4" eyepieces, mounted on the front side 
  • Eyepiece: BRESSER Super Plössl 25 mm (1 1/4") 
  • Viewfinder: 6x30 viewfinder
  • Hybrid viewfinder shoes (Art. 0620158) included (2 pcs)
  • Tube weight without accessories: 16 kg
  • Tube weight with accessories: 18.9 kg 
  • Rocker box weight: 14.8 kg 
  • Total weight: 33.7 kg 
  • Overall dimensions: 60 x 60 x 163 cm

Field of application    

  • Deep Sky Observation
  • Lunar observation
  • Planetary observation
  • Solar observation
  • Lunar photography

Focus group    

  • Beginners
  • Advanced Amateurs
  • Visual enthusiasts


Product family

  • Reflector telescope

Optical specifications

  • Optical design: Newtonian Reflector
  • Magnification from: 43
  • Maximum recommended magnification: 610
  • Material Primary mirror: Special low expansion H-PZ33
  • Primary mirror diam.: 305 mm
  • Secondary mirror diameter: 72 mm
  • Focal length: 1525 mm
  • Aperture ratio: 5
  • Angular resolution: 0.45 arc seconds
  • Visual limiting magnitude (approx., mag): 12
  • Finderscope: 6 x 30 mm


General technical data

  • Colour: white
  • Bearing in alt-azimuth / RA: Needle roller bearing
  • Bearing in elevation / DEC: Teflon
  • Eyepiece Barrel Diameter: 50.8 mm
  • Material: Aluminium
  • Mount Type: Dobson
  • Extended warranty: 10 years
Whats included with the BRESSER Messier 12 Dobsonian telescope

What's included with the BRESSER Messier 12" Dobsonian telescope

  • Tube with Newtonian optics 
  • Aperture solar filter 
  • 6x30 viewfinder 
  • Hybrid viewfinder shoes (2 pcs)
  • 25 mm Super-Plossl eyepiece (Ø 31.7 mm / 1.25") 
  • 1 extension tube 37.5 mm for 2.5" Hexafoc 
  • 1 eyepiece adapter Ø 31.7 to 50.8 mm 
  • 2 tube rings 
  • 2 altitude wheels 
  • Rocker box with 2 base plates and mounting material (disassembled for self-assembly)
  • Shipping dimensions Box 1: 134 x 45 x 45 cm - 19 kg 
  • Shipping dimensions Box 2: 61 x 61 x 24 cm - 17 kg



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