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.
![SVBONY SV545 Petzval Refractor 45/203mm f/4.5 [W9317B]](https://www.apm-telescopes.net/images/thumbs/0655344_svbony-sv545-petzval-refraktor-45203mm-f45-w9317b_640.jpeg "SVBONY SV545 Petzval Refractor 45/203mm f/4.5 [W9317B]")
Characteristics:
- Universal Reducer/Flattener for many Apochromats
- High quality optics, calculated by Massimo Riccardi
- High-quality multi coatings
- Excellent image quality up to full frame sensors
The Askar 1.0x corrector for the 140mm f7 Triplet APO provides a very good image quality across the entire field of view.
- developed for the Askar 140APO
- provides very good image quality across the entire field of view
- suitable for full-frame cameras
The Askar 0,8x Reducer - Corrector for the 140mm f7 Triplet APO turns the 140 mm APO into a fast Astrograph.
- designed for the Askar 140APO
- brings the focal ratio down to f5.6
- suitable for full frame cameras
Optolong L-Synergy is a dual 7nm narrowband filter compatible with DSLR cameras, color CMOS sensors, and CCD cameras, supporting telescope systems with F-ratio of F3.3 or above (slower system）. Its key advantage lies in enabling astrophotography amateurs to capture exceptionally detailed emission nebulae even in light-polluted environments. it has been optimized to minimize bright star halos while isolating all emission lines except SII and OIII, achieving maximum effective transmission.
2"（M48×0.75）
