TS Optics 4 mm Planetary HR - 1.25" Eyepiece, 58°, fully multi-coated High Resolution, Llong eye relief, wide angle planetary eyepieces Planetary HR eyepieces were made for best possible image sharpness particularly for observing planets. Contrary to other planetary eyepieces such as Orthoscopics they have a much longer eye relief and a larger field of view. Planetary HR eyepieces not only feature superb image sharpness, but also a very high viewing comfort!
Technical details- Viewing Comfort: The Planetary HR eyepieces offer not only superb image quality (see below), but also excellent viewing comfort. Eye relief is much longer than in Orthoscopic eyepieces of similar focal length. The eyepieces are suitable for eyeglass wearers.
The extendable rubber eyeguard offers individually perfect ergonomics for every observer. - Optical Layout: Six elements offer a long eye relief, a large and well corrected field of view, and above all superb image sharpness throughout the field of view.
- Excellent Image Sharpness: On-axis image sharpness is practically perfect, like a really good Orthoscopic eyepiece. Sharpness throughout the field of view remains without visible deterioration. As a result the eyepieces are considered by many to be even superior to Orthoscopics!
- Full Broadband Multi-Coating: Planetary HR eyepieces have a broadband multi-coating on all glass-to-air surfaces. They have an excellent transmission and contrast. Ghost images and internal reflections are effectively suppressed.
- No Kidney-Beaning: Cheap eyepieces and too extreme wide angle eyepieces often suffer from "Kidney-Beaning". When you move the head only slightly a black, kidney-shaped shadow will cover a part of the field of view. This effect is nearly eliminated in the Planetary HR eyepieces.
- Suitable for Use in Binocular Viewers: Planetary HR eyepieces are very well suited for binocular viewing. You will have no trouble looking through both eyepieces at the same time without getting into a conflict with your nose. The adjustable eyeguard offers a perfect observing position for critical binocular viewing.
Delivery contents- Eyepiece
- Covers for both sides
- Cleaning Cloth
Products specifications
| Barrel size / Filter thread | 1 1/4" with filterthread |
| Focal length | 4 mm |
| Lenses / groups | 6 Lenses |
| Field of view | 58° |
| Eyegard | rubber, foldable |
| Coating | multicoating on all glass-air-surfaces |
| Eye relief | 16mm |
| Special | no kidney bean effect |
