EYEPIECE 3.5 smc XW Astronomical

AT A GLANCE

• Improved 70 degree field of view for wider views
• XW 3.5mm, 5mm, 7mm, 10mm, 14mm, 20mm, 30mm, and 40mm provide a wider field of view than previous PENTAX eyepieces
• All Pentax XW series eyepieces may be used with astronomical telescopes with appropriate 1 1/4″ or 2″ focusers.
• XW 3.5mm, 5mm, 7mm, 10mm, 14mm, 20mm eyepieces may be used with our PF series Spotting Scopes (except PF 63 Zoom)
• Full multi-coated lenses increase light transmission and contrast
• High refraction, extra-low dispersion lanthanum glass elements deliver bright, high resolution images with minimal distortions and aberrations
• Advanced computer simulation design technology implemented to drastically reduce internal reflections, producing brighter, clearer images
• Weatherproof construction for greater durability
• Long eye relief for comfortable viewing with or without glasses

DESCRIPTION

With unsurpassed optical clarity and the shortest focal length in the XW series, the XW 3.5 offers a 70 degree field of view for easier viewing. All of our eyepieces are constructed with a high-refraction, low-dispersion lanthanum glass that consistently delivers bright, high-resolution images with minimal distortion. In addition, all XW series eyepieces are built to JIS Class 4 weather-proof standards which increases their durability in less than ideal conditions. Designed for use with a wide range of telescopes and PENTAX brand spotting scopes, the XW series eyepieces are a clear choice for ground and astronomical applications.

Compatible with the following: PF-65 and PF-65 ED II series spotting scopes, PF-80 series spotting scopes, PF-100 series spotting scopes

SPECIFICATIONS

Lens Structure 8 elements 5 groups
Focal Length 3.5mm
Apparent Field of View 70 degrees
Eye Relief 20mm
Attachment Diameter 1.25″ (31.7mm)
Filter Diameter 28.6mm
Field Stop Diameter 4.3mm
Eyepiece Ring Helicoid type
Height & Width 5.4″ x 2.4″
Weight 14.3 oz. (405g)