Thread for attaching filters
43 mm filters can be attached to objective lens.
- Circular Polarize Filter (CPL)
- Moon-and Sky Glow Filter
- Night Sky Filters
- Neutral Density Filter (ND)
Abbe-Koenig prisms that feature total reflection on all surfaces and have a high transmission rate are employed, for a brighter field of view. Applying a phase-correction coating on roof (Dach) surfaces of Abbe-Koenig prisms, which compensates phase shifts of light when reflecting inside prisms, results in high-resolution and high-contrast images.
Three ED glass elements employed in each tube
Using three ED (Extra-low Dispersion) glass elements in each tube, chromatic aberration that causes colour fringing is compensated at the very edge of the field of view, realising a contrast-rich and high-resolution image.