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- 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: 2.0 inch/50.8mm, Connecting tread: M48x0.75mm
- Multi-layer anti-reflection coatings for highest image contrast
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: 2.0 inches / 50.8 mm
- Connecting thread: M48x0.75mm
- 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 |
Warning Note 1: | General safety instructions DANGER Risk of eye injuries! Never look directly at the sun or near the sun through this device. There is a risk of blindness! Children should only use the device under supervision. Keep packaging materials (plastic bags, rubbe |
Warning Note 2: | 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 teles |
Warning Note 3: | Never leave the optics unattended. Children and inexperienced adults could point the telescope at the sun without proper precautions and lose their eyesight. |
Warning Note 4: | Do not expose the device to high temperatures. |
Produkt- und Sicherheitshinweise
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
www.bresser.de
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