Product Highlights
Set of high-performance reducer, flattener and extension tube for a sharp image across the entire field of view
- Reduces the focal length and flattens the image
- Very high light transmission (approx. 96%)
- Also suitable for full-frame DSLR cameras
- Complete set with reducer and field flattener lens
- Includes 66 mm extension
- Dimensions: 58mm x 30mm / 68mm x 45.3mm
- AS coatings with 99.9% light transmission
- Weight: 107g / 237g
- Correct distance to chip: 63.5 mm
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 von Bresser
The kit includes a high-performance reducer, flattener and the ''EX TUBE 66'' extension tube, which was developed for the FL55SS Fluorite Apo Refractor and improves the photographic performance by flattening the image right up to the edges.
Ultra-sharp image over the entire field of view of the DSLR full-frame sensor
Designed for prime-focus photography with the FL55SS, the Flattener HD flattens the entire field of view of full-frame DSLR cameras.
The 44 mm image circle covers the entire field of view of a full-frame DSLR camera.
When used in combination with the HD5.5 Reducer, the focal length is reduced by 0.79x (from f5.5 to f4.3) and the illuminated area retains a diameter of 44 mm, which significantly improves the sharpness across the entire field of view of the DSLR camera.
96% illumination to the edges of the field of view
The Flattener HD was specially developed for the FL55SS refractor in order to reduce light loss to a minimum.
The field of view is fully illuminated up to the edges.
Exceptionally high contrast
The same anti-reflective AS coatings used on our high-end VSD 100 f/3.8 astrograph are also used here to provide an outstanding light transmission of 99.9% per lens surface.
In addition, the matte black surface of the Reducer HD kit eliminates loss of light, ghosting and scattered light.
FEATURES
- Ultra-sharp image over the entire field of view
- Reduces the focal length and flattens the image
- Very high light transmission (approx. 96%)
- AS coatings with 99.9% light transmission per lens surface
- Also suitable for full-frame DSLR cameras
- Includes 66 mm extension
- Reduces the aperture ratio to f4.3
- Distance to chip: 63.5 mm
- Dimensions: 58mm x 30mm / 68mm x 45.3mm
- Weight: 107g / 237g
DELIVERY CONTENT
- Reducer HD
- Flattener HD
- Extension tube
- Dust caps
Colour: | black |
---|---|
Material: | Aluminium |
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