Optical Accessories
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On the evening of August 12, 2026, an extraordinary celestial event is on the horizon: A total solar eclipse will pass over parts of Europe—though not over Germany.
Here in Germany, we will experience an impressive partial eclipse, which will nonetheless offer a rare and spectacular sight. Germany will be entirely within the Moon’s penumbra. As a result, the sun will not be completely, but clearly and visibly “nibbled away.”
What do you need to safely observe the solar eclipse? You can find a list 👉 here!
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Optical Accessories
Everything you need of optics for visual and photographic work or accessories for DIY projects, can be found in these categories.
Optolong 3 nm H-Alpha Ultra - Narrow band filter for astrophotography - Shooting with extreme contrast even with strong light pollution.
- 2" mounted with filter mount
- Suitable for telescopes and lenses with focal ratios of f/3 and lower
Blackened edges to avoid internal reflections - Extremely narrow bandwidth of only 3 nm for maximum contrast
- Central wavelength 656 nm
Optolong 3nm OIII - Narrow band filter for astrophotography - Shooting with extreme contrast even with strong light pollution.
- 2" mounted with filter mount
- Suitable for telescopes and lenses with focal ratios of f/3 and lower
Blackened edges to avoid internal reflections - Extremely narrow bandwidth of only 3 nm for maximum contrast
- Central wavelength 501 nm
Optolong 3nm SII - Narrow band filter for astrophotography - Shooting with extreme contrast even with strong light pollution.
- 2" mounted with filter mount
- Suitable for telescopes and lenses with focal ratios of f/3 and lower
Blackened edges to avoid internal reflections - Extremely narrow bandwidth of only 3 nm for maximum contrast
- Central wavelength 672 nm
The L-Pro Astrophotography filter is a filter for improving the contrast of deep-sky objects and dampening the sky background.
- blocks UV and IR (700 - 1100 nm)
- high transmission at passband
- improved color balance for DSLRs and One-Shot Color Astro Cameras, e.g. ASI Color Cameras cooled or uncooled by ZWO.
- high optical quality
- in 1.25" filter cell
- The L-Pro Nebula filter permits roughly 3x longer exposure times than without a filter and therefore improves contrast significantly.
The L-Pro Astrophotography filter is a filter for improving the contrast of deep-sky objects and dampening the sky background.
- blocks UV and IR (700 - 1100 nm)
- high transmission at passband
- improved color balance for DSLRs and One-Shot Color Astro Cameras, e.g. ASI Color Cameras cooled or uncooled by ZWO.
- high optical quality
- in 2" filter cell
- The L-Pro Nebula filter permits roughly 3x longer exposure times than without a filter and therefore improves contrast significantly.
This dual band filter is designed to drastically reduce the effect of light pollution, it isolates the nebulae´s emissions into H-Alpha (red) and OIII (green-blue) and blocks light pollution.
- Transmits the main nebula lines at 656.3 nm and 500.7 nm with 3 nm bandpass
- Blocks light pollution and skyglow
- Designed mainly for astrophotography
- Especially suited for color cameras
- Ideal for urban areas with extreme light pollution
- Incorporates UV/IR cut filter
- Multi layers anti reflection coating
- Ultra thin filter cell maximises compatibility with filter wheels
