Pentax Eyepiece SMC XW30-R 30mm 2"

PENTAX SMC XW-Revival Eyepieces

PENTAX reintroduces two beloved eyepiece models: the XW-30 and XW-40.

Featuring high-performance XW-series optics, these eyepieces employ high-refraction, extra-low-dispersion glass elements to deliver a finely balanced image with minimal aberrations. Specifically crafted to mitigate the disruptive blackout effect, they effectively compensate for pupil spherical aberration.

Key Features:

• Extended focal length ideal for observing nebulae and star clusters
• Enjoy clear, comfortable viewing with a 70° apparent angle of view and 20mm eye relief
• Exceptional image quality ensured by high-grade optics incorporating high refractive index ultra-low dispersion lanthanum glass elements
• Original multi-layer coating enhances light transmission efficiency
• Advanced light-shielding technology enhances image contrast
• Weather-resistant* construction enables All-Weather viewing (*The XW series features JIS class 4 weather-resistant structure; not suitable for underwater use)

These new eyepieces are compatible with telescopes featuring a Sleeve Size of 50.8mm. However, please note that they are not compatible with Pentax Spotting Scopes (standard Sleeve Size of 31.7mm).

SPECIFICATIONS

Capacity

Focal length (mm): 30

Apparent field of view (°): 70

Eye relief (mm): 20

Number of lenses: 7

Number of groups: 6

Connection (to the telescope): 2"

Connector (at camera end): M48

Coating of optical system: FMC

Transmission: 96 (at 550nm)

Special features

Adjustable eyepiece cup: Yes (rotatable)

Optional camera adaptor: Yes

Filter thread: Yes

Inert gas charge: No

General

Type: Eyepiece

Build Type: SWA

Series: XW

Weight (g): 740

Length (mm): 123

Diameter (mm): 76