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 glassesDESCRIPTION

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 scopesSPECIFICATIONS

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)