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Astronomy > Eyepieces > Pentax > XW > Pentax Eyepiece SMC XW40-R 40mm 2"
Product no.: 64635

Eyepiece SMC XW40-R 40mm 2"

$ 520.00 incl. VAT plus shipping costs
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Product description

Pentax SMC XW-Revival Eyepieces

Pentax re-launched two popular eyepiece models: XW-30 and XW-40.

The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion glass elements to produce a well-balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.

Main Features:

  • Long focal length makes it suitable for observation of nebulae and star clusters
  • Clear, comfortable viewing assured by 70° apparent angle of view and 20mm eye relief
  • High-grade optics for exceptional image quality with built-in high refractive index ultra-low dispersion lanthanum glass elements
  • Original multi-layer coating for outstanding light transmission efficiency
  • Advanced light-Shielding technology for improved image contrast
  • Weather-resistant* construction for All-Weather viewing (*The XW series features a weather-resistant structure of JIS class 4, it cannot be used underwater)

These new eyepieces are compatible with existing Telescope with a Sleeve Size of 50.8mm, however, please note that the eyepieces are not compatible with Pentax Spotting Scopes (standard Sleeve Size of 31.7mm).

Our expert comment:

Tip: You can find all important information at a glance in our infographic, Your telescope needs these three eyepieces! You can find a comprehensive overview in our buyers guide [cms://shop/i_id=1617 "The big buyers guide: The best eyepiece for every telescope”]

Specifications

Capacity


Focal length (mm)
40
Apparent field of view (°)
70
Eye relief (mm)
20
Number of lenses
6
Number of groups
5
Connection (to the telescope)
2"
Connector (at camera end)
M48
Coating of optical system
FMC
Transmission
96 (550nm)
Field stop (mm)
46,5

Special features


Adjustable eyepiece cup
yes (rotatable)
Optional camera adaptor
yes
Filter thread
yes
inert gas charge
no

General


Type
Eyepiece
Type of build
SWA
Series
XW
Weight (g)
700
Length (mm)
117
Diameter (mm)
76

Product safety

manufacturer: Ricoh Imaging Europe S.A.S., 7-9 avenue Robert Schuman, 94150 Rungis, FR, [email protected]

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*All prices include VAT plus shipping costs.

Pentax Eyepiece SMC XW40-R 40mm 2"
Pentax Eyepiece SMC XW40-R 40mm 2"
Pentax Eyepiece SMC XW40-R 40mm 2"

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