The L-eXtreme is a two-band filter and the ideal choice for strong light pollution suppression. It allows astrophotography of objects with narrow-band emission in the O-III and H-alpha lines out of the city.
- Professional photographic filter for astronomy
- Improves photographs of emission nebulae in the city
- Ideal for extreme suppression of light pollution
- Enables astrophotography even from bright cities
- Dual-band filter with high transmission for O-III + H-alpha
- Does not require extremely expensive but fast telescopes
- CMOS colour cameras deliver image quality like CCD mono cameras
- 7nm narrow dual bandpass filter for one-shot colour cameras
- Filter DIA: 1.25 inch/31.7mm, Connecting tread: M28x0.6mm
- Multi-layer anti-reflection coatings for highest image contrast
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
Especially with inexpensive but fast newtonian telescopes, double-lens ED refractors or even achromats, the L-eXtreme filters open up completely new possibilities for high-class astronomical images even from the light polluted city. CMOS cameras can deliver images like monochrome cameras. This new generation of filters makes it possible to take amazing astrophotos directly from the heavily light-polluted city with all its artificial light sources. The dual narrow bandpass for the wavelengths of O-III and H-Alpha and the almost complete attenuation of the interfering light sources of these new filters make this an ideal solution.
- Professional photographic filter for astronomy
- Improves deep sky emission nebula photography
- Best choice for extreme light pollution suppression
- For taking pictures also from highly light-polluted areas
- Dual-narrow-band filter with high transmission for O-III and H-Alpha lines
- Does not require very large or extremely expensive telescopes
- Excellent results also with fast inexpensive newtonian telescopes, double-lens ED refractors or even achromats
- L-eXtreme filter is the better choice for fast systems at a competitive price
- CMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras
- Filter diameter: 1.25 inches / 31.7 mm
- Connecting thread: M28x0.6mm
- Selected optical glass material
- Spectrum: 300-1000nm
- Off-Band Blocking: > 99 %
- Surface Quality: 60/40 (Refer to MIL-O-13830)
- Fine-optically polished to ensure accurate 1/4 wavefront and highest parallelism over the both surfaces
- High transmission at major nebula emission lines (i.e. H-alpha 656nm and OIII 496nm&500nm)
- L-eXtreme filter (1 pc)
- Dust protection box (1 pc)
Colour: | black |
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Field of application [Telescope-filter]: | Light Pollution Filter for Astrophotography |
Material: | Glass, Plastic |
Telescope filter type: | Nebula filter |
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