































The FL55ss is a high-performance, top-of-the-range fluorite apochromat that produces razor-sharp images of the night sky. Thanks to its compact dimensions and lightweight design, it is the perfect travel companion for demanding astronomers.
- High-performance, top-of-the-range fluorite apochromat
- Compact, lightweight and transportable
- Very high quality standards, fluorite optics
- Suitable for full-frame photography
- Razor-sharp star images across the entire field of view
- Perfect for air travel and excursions
- High-quality workmanship, made in Japan
- Dimensions: 80 x 282 mm
- Weight: 1.5 kg
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
Thanks to its small size and lightweight design, this high-quality fluorite refractor is ideal for excursions and air travel.
It displays razor sharp and bright stars across the entire field of view of the full-frame image sensor (95% illumination with 44 mm image circle).
FEATURES
- Objective lenses: 55 mm fluorite
- Focal length: 300 mm F5.5
- Resolution and limiting magnitude: 2.11, 10.5
- Light-gathering power: 62x
- Dimensions and weight: 80 x 282 mm; 1.5 kg
- Adapter and connections: 31.7 mm receptacle, 60 mm thread
WHAT’S INCLUDED
- 55 mm optical tube with fluorite APO
- Dovetail adapter
- Extension Tube 60 mm
- Dew cap
- Dust covers
Angular resolution (arc seconds): | 2.11 |
---|---|
Aperture ratio: | 5.5 |
Batteries included: | 0 |
Batteries required: | 0 |
Colour: | white |
Colour of coating: | green |
Compass: | 0 |
Dust protection caps: | Dust protection caps for front lens and eyepiece holder |
ED glass: | 0 |
Field of application [Telescopes]: | Deep Sky Observation, Deep Sky Photography, Land object photography, Land observation, Lunar observation, Lunar photography, Planetary observation, Planetary photography |
Focal length (mm): | 300 |
Focus Group [Telescopes]: | Advanced Amateurs, Specialists and Research, Visual enthusiasts |
Material: | Aluminium |
Material OTA: | Aluminium |
Mirror/Lens diam. (mm): | 55 |
Mount Type [Telescopes]: | Optics without Mount |
Net weight heaviest part (kg): | 1.5 |
Optical design: | Apochomatic Refractor |
Product Family [Telescopes]: | Refractor telescope |
Reticle: | 0 |
Total length (mm): | 282 |
Total width (mm): | 80 |
Transportability: | very good |
Tripod height adjustment: | 0 |
Type of coating: | Fully multi-coated |
Type of tripod thread: | 60 mm |
Visual limiting magnitude (approx., mag): | 10.5 |
0 of 0 reviews
Login
Produkt- und Sicherheitshinweise
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
www.bresser.de
- General safety instructions DANGER Risk of suffocation! Improper use of this product can result in suffocation, especially for children. Therefore, carefully observe the following safety instructions. Keep packaging materials (plastic bags, rubber bands, etc.) away from children! There is a risk of suffocation! Keep cords, ribbons, and similar materials away from children! They could accidentally strangle themselves and suffocate! NOTE Risk of material damage! Improper handling can damage the device and/or accessories. Therefore, only use the device according to the following safety instructions. Do not dismantle the device! In the case of a defect, contact your dealer. They will contact the service center and may send the device in for repair.
- Never look at the sun through an eyepiece/telescope without a certified protection filter. A moon filter can never be used for solar observation. The moon filter is only suitable for moon observation. The solar filter must be mounted in front of the telescope opening, not at the eyepiece. Otherwise, the concentrated light beam through the optics will immediately destroy the filter foil, leading to severe eye damage, including permanent blindness.
- Never leave the optics unattended. Children and inexperienced adults could point the telescope at the sun without proper precautions and lose their eyesight.
- Do not expose the device to high temperatures.
Accessories
Similar products
Customers also bought