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Focal length: 25mm. Eyepiece clamp diameter: 1.25"

4 elements in 2 groups
Optical design is a set of optical elements that is assembled in a certain way
1.25
The barrel diameter of the accessory must match the barrel diameter of the device; otherwise, an adapter will be required
Multi-coated EMD
The optics coating improves the image quality
Availability

Product ID 73769
Brand Explore Scientific
Warranty 2 years
EAN 4007922050973
Package size (LxWxH) 14x11x10 cm
Shipping Weight 0.35 kg
Description

Solidly in the mid-magnification range for most amateur telescopes, the 25mm is a true workhorse for visual observers. If you love deep sky observing, eyepieces in this focal length range not only give healthy increases in magnification, but the contrast enhancement of giving a darker background sky can make all the difference of how galaxies and nebulae appear under suburban skies.

The Explore Scientific 52° LER mid-range focal length eyepiece is excellent flat-field multi-element ocular that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, this eyepiece offer incredible value in a very nice eyepiece.

These eyepieces are the choice for observers wearing glasses – with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The patented EMD-coating produces high contrast images and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don´t have to deal with dirt, fungus or cleansing fluids getting between the lenses. The eyepieces are sealed – this makes sure you will be able to enjoy these eyepieces for many years to come.

Features:

  • Large eye distance, large field and great image sharpness
  • Excellent viewing position for people with glasses
  • Excellent field sharpness even with fast optics
  • 52° apparent field of view
  • Argon-purging prevents internal fogging, the sealing facilitates cleaning
  • Patented EMD-coating to maximize contrast
  • Blackened lens edges to avoid reflexes
  • All eyepieces of this series are parfocal
  • Stainless steel barrel with conical security cutoff

The kit includes:

  • 52° eyepiece
  • Dust covers
  • Protective bag
Specifications
Product ID 73769
Brand Explore Scientific
Warranty 2 years
EAN 4007922050973
Package size (LxWxH) 14x11x10 cm
Shipping Weight 0.35 kg
Type standard
Optical scheme 4 elements in 2 groups
Barrel diameter, in 1.25
Optics material optical glass
Lens coating multi-coated EMD
Focal length, mm 25
Field of view, ° 52
Eye relief, mm 16.4
Field stop diameter, mm 22.7
Filter thread
Side edges blackening
Parfocal
Argon-purged
O-ring
Body stainless steel
Waterproof
Degree of moisture/water protection immersion to a depth of 1m up to 30 minutes
Eyecup rubber, foldable
Protective caps included
Pouch/case/bag in set dust cover