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- 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
With BRESSER, you can enjoy a smooth introduction to the vast world of astronomy. Our detailed information ("Telescope Guide") provides valuable tips for beginners—but even experienced astronomers can use the information we provide (e.g., tables for the geographical latitude of all major world cities) as a reference.
Here is the table of contents of the comprehensive BRESSER Telescope Guide:
- 2. The View into the Starry Sky
- 2.1 Observing with the Naked Eye
- 2.1.1 Observing Constellations with the Naked Eye
- 2.2 Observing with Binoculars
- 2.2.1 Observing Planets and Moons with Binoculars
- 2.2.2 Observing Deep Sky Objects with Binoculars
- 2.2.3 Every Beginning is Easy
- 2.3 Observing with a Telescope
- 2.4 The Moon
- 2.4.1 The Moon Phases
- 2.4.2 The Far Side of the Moon
- 2.4.3 The Moon Map
- 2.4.4 Maria (Seas)
- 2.4.5 Mare
- 2.4.6 Craters
- 2.4.7 The Ray Craters
- 2.5 Observing the Solar System with a Telescope
- 2.5.1 Where are the Planets?
- 2.5.2 Planet Observation
- 2.5.3 The Position of the Planets Relative to the Sun
- 2.5.4 The Planets Introduce Themselves
- 2.5.5 Deep Sky Observation with a Telescope
- 2.6 Practical Observation Tips and Tricks
- 2.6.2 Tips for Optimal Observation Conditions
- 2.7 The Most Beautiful Objects Throughout the Year
- 4. Telescopes
- 4.1 The Telescope as an Observation Instrument
- 4.2 Optics
- 4.2.1 Refractor (Lens Telescope)
- 4.2.2 Reflector (Mirror Telescope)
- 4.3 Mechanics
- 4.3.1 Altazimuth Mount
- 4.3.2 Equatorial Mount
- 4.3.3 Drive Motors
- 4.4 Accessories
- 4.4.1 Eyepieces
- 4.4.2 Important Tips for Eyepiece Selection
- 4.4.3 Filters
- 4.4.4 Photographic Accessories
- 4.4.5 Other Accessories
- 5.1 Which Telescope for Whom?
- 5.1.1 Deep-Sky Observations
- 5.1.2 Observing Closer Planets
- 5.1.3 The Topic of Portability
- 5.1.4 Price Factor When Buying a Telescope
- 6. Useful Tables
- 6.1 Table for the Geographic Latitude of All Major World Cities
- 6.1.1 Observers in the Northern Hemisphere (N):
- 6.1.2 Observers in the Southern Hemisphere (S):
- 6.2 Lookup Table for Notable Stars
- 6.3 Getting Acquainted with the Universe - or: Distances in Space
Sky Guides by Bresser
- 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)
Bearing in alt-azimuth / RA: | Needle roller bearing |
---|---|
Bearing in elevation / DEC: | Teflon |
Colour: | white |
Finderscope: | 6 x 30 mm |
Focus Group [Telescopes]: | Advanced Amateurs, Beginners, Visual enthusiasts |
Focusing system: | 2.5" Hexafoc |
Material: | Aluminium |
Material Primary mirror: | Special low expansion H-PZ33 |
Mount Type [Telescopes]: | Dobson |
Optical design: | Newtonian Reflector |
Product Family [Telescopes]: | Reflector telescope |
Produkt- und Sicherheitshinweise
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
www.bresser.de
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