Powerful dobsonian telescope with a large 305 mm parabolic primary mirror, 2.5" HEX focuser and very lightweight GRP telescope tube
- Newtonian optics with 305 mm parabolic primary mirror
- 2.5" HEX focuser with rack and pinion drive
- Very lightweight GRP telescope tube - easy to transport
- Large altitude wheels and AZ needle bearings for smooth movement
- 9-point mirror cell for perfect optical performance
- Tube with tube clamps - this also enables use on equatorial mounts
- Rocker box with metal furniture connectors can be dismantled or assembled in just a few minutes
- Diffraction-limited optics: Strehl >0.8
- Aperture solar filter and new Hybrid viewfinder shoes included
- Telescope for night and solar observation
£1,265.00*
Available, delivery time: 10-12 working days
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Telescopes - Optics and mechanics
The ultimate guide to the ideal microscope for examinations of koi parasites.
Read nowFAQ - Frequently Asked Questions
- Alt-azimuth: easy to use, moves horizontally and vertically
- Equatorial: enables precise tracking of objects with only one axis – ideal for high magnifications and astrophotography
- Moon: from 30 mm
- Planets: from 100 mm
- Deep sky: from 150 mm
Product information "BRESSER Messier 12" Dobson Telescope"
- 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
- Tube with Newtonian optics
- Aperture solar filter
- 6x30 viewfinder
- Hybrid viewfinder shoes (2 pcs)
- 25 mm Super-Plössl 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)
| Angular resolution (arc seconds): | 0.45 |
|---|---|
| Aperture ratio: | 5 |
| Batteries included: | No |
| Batteries required: | No |
| Bearing in alt-azimuth / RA: | Needle roller bearing |
| Bearing in elevation / DEC: | Teflon |
| Colour: | white |
| Compass: | No |
| ED glass: | No |
| Extended warranty (years): | 10 |
| Eyepiece Barrel Diameter (mm): | 50.8 |
| Field of application [Telescopes]: | Deep Sky Observation , Lunar observation , Lunar photography , Planetary observation , Solar observation |
| Finderscope: | 6 x 30 mm |
| Focal length (mm): | 1525 |
| Focusing system: | 2.5" Hexafoc |
| Magnification from: | 43 |
| Material: | Aluminium |
| Material Primary mirror: | Special low expansion H-PZ33 |
| Maximum recommended magnification: | 610 |
| Mount Type [Telescopes]: | Dobson |
| Optical design: | Newtonian Reflector |
| Power supply unit included: | No |
| Primary mirror diam. (mm): | 305 |
| Product Family [Telescopes]: | Reflector telescope |
| Reticle: | No |
| Secondary mirror diameter (mm): | 72 |
| Target Group [Telescopes]: | Advanced Amateurs , Beginners , Visual enthusiasts |
| Total height (mm): | 1630 |
| Total length (mm): | 600 |
| Total width (mm): | 600 |
| Tripod height adjustment: | No |
| Tube diameter (mm): | 345 |
| Tube length (mm): | 1430 |
| Visual limiting magnitude (approx., mag): | 12 |
Product and safety instructions
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
www.bresser.de