Explore Scientific 62° LER Eyepiece 20mm Ar
The Explore Scientific 62° LER Eyepiece 20mm Ar is a 1.25" long eye relief (15mm) 62° apparent field long focal length eyepiece, ideal for comfortable widefield viewing (particularly for those who wear glasses to observe). Ideal as a mid-power eyepiece selection, particularly for deep sky and wider views of the Moon (or Sun, with appropriate full aperture filter).
This eyepiece provides excellent resolution and class-leading edge-to-edge field correction, by utilising high quality glass elements and Explore Scientific’s patented EMD coatings. In addition to this, all internal edges are blackened, in order to prevent any stray internal reflections. While many modern eyepieces have larger apparent fields, this is often at the expense of eye relief and edge sharpness – Explore Scientific have taken the view that with this design, the emphasis is on sharpness, precision and comfort. The whole Explore Scientific 62° LER range are Argon purged – completely environmentally sealed - to prevent moisture, dirt or fungus getting into the internals of each eyepiece, guaranteeing years of trouble-free enjoyment.
- Focal length: 20 mm
- Apparent field of view: 62 degrees
- Eyecups: Rubber eyecups: foldable
- Interpupilar distance min: 15 mm
- Warranty: Limited 10 year
- Total length: 60 mm
- Net weight (without access.): 135 g
- Net Weight total (incl. accessories) : 145 g
- Eyepiece Barrel Diameter: 31.8 mm