Eyepiece 52° LER 20 mm Ar
- Large eye distance for comfortable vision
- Ideal also for spectacle wearers
- 52° apparent field of view
- Outstanding marginal sharpness even in fast telescopes
- Patented EMD treatment for maximum contrast
- Carefully blackened lens edge to prevent reflection
- Filled with protective grease and watertight construction
- No fogging on the inside
- Stainless steel cap with conical safety groove
- Dust protection cap and carrying bag included
The 20 mm eyepiece of the 52° LER series is a true workhorse for visual observations, and has established itself in the mid-magnification segment of most amateur telescopes. If you like Deep Sky observing, eyepieces with this focal length range not only offer you reasonable magnification even with moderate seeing, but also increased contrast thanks to the darker background sky can make a difference, so that galaxies and nebulae can also be recognized in the sky in the outlying areas of cities.
The foldable silicone eyecups provide maximum wearer comfort. People who wear glasses often have the problem that they do not have a full field of vision. Now this problem is a thing of the past. These are excellent multi-element flat field eyepieces that will change your astronomical viewing experience. The patented EMD coating provides high contrast and avoids annoying reflections. Another great advantage of these eyepieces is their outstanding sharpness, which is especially noticeable when observing planets and the Moon, as well asDeep Sky objects. With an upward corrected apparent field of view of 52 degrees, these eyepieces offer outstanding quality compared to a relatively simple Plössl. Argon filling effectively prevents fogging on the inside, and they are protected against dust, fungus and penetration of cleaning fluids .The eyepieces are sealed watertight. This ensures that you can enjoy many years of countless observations with these high-quality eyepieces. The Explore Scientific 52° LER series represents maximum comfort and quality, combined with an excellent price-performance ratio.
FEATURES
- Large eye distance for comfortable vision
- Ideal also for spectacle wearers
- 52° apparent field of view
- Outstanding marginal sharpness even in fast telescopes
- Patented EMD treatment for maximum contrast
- Filled with protective grease and watertight design
- Carefully blackened lens edge to prevent reflection
- Eyepieces of the series are homofocal to each other
- Stainless steel eyecup with conical safety groove
- Dust protection cap and carrying bag included
SCOPE OF DELIVERY
- 52° eyepiece
- Dust protection cap
- Carrying bag
Technical Specifications
| OPTICAL SPECIFICATIONS |
|---|
| Focal length |
20 mm |
| Apparent field |
52 degrees |
| GENERAL TECHNICAL DATA |
|---|
| External diameter |
31.7 mm |
| Eyecups |
Foldable rubber eyecups |
| Pupil to eyepiece distance |
15 mm |
| Extended warranty (years) |
10 |
| DIMENSIONS & WEIGHTS |
|---|
| Overall length |
76 mm |
| Net weight |
175 g |
