Eyepiece 52° LER 4.5 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 high-performance eyepieces with short focal lengths (high magnifications) from 3 mm to 10 mm are not only used for observations of the Moon, planets and binary stars, but can also be used for compact and bright Deep Skyobjects. Not only will the size of a planetary nebula or globular cluster be impressive when they fill the full field of view of an eyepiece, but also the background sky will be very dark, as the effective contrast increases considerably as magnification increases. However, for a sharp image to be generated at high magnification, good to excellent atmospheric conditions are necessary. The 4.5 mm eyepiece of the 52° LER series is a popular choice for many telescopes, allowing the highest possible magnification to be achieved directly without an additional teleconverter or Barlow lens.
Foldable silicone eyecups provide maximum user comfort .Spectacle wearers often have the problem that, especially in the case of eyepieces with short focal lengths, they do not have the full field of view. This problem is now 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 the planets and the Moon. 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 |
4.5 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 |
89 mm |
| Net weight |
185 g |
