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Pentax XW 20mm Eyepiece

Pentax XW 20mm Eyepiece

Exceptional performance 20mm focal length low to medium to high power eyepiece for astronomical telescopes, a premium wide-angle eyepiece with a long and comfortable 20mm eye relief and a waterproof body. Weatherproof construction for greater durability and long term field use is a reassurance of quality manufacturing. Features include high-grade Lanthanum glass with high refraction and low dispersion for superb corrections Original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high light transmission performance, essential for astronomical observation where you need to use all the available incoming light possible. Removable eyecup allows attachment of an adaptor of 43mm in diameter with a 0.75mm pitch.

PENTAX Multi-Layer Coating for Outstanding Light Transmission
All lens surfaces that come in contact with air are treated with the original multi-layer coating, while all laminated surfaces are treated with the innovative partial coating, to offer the light transmission efficiency of more than 90 percent (an astonishing 96 percent at 550nm) over the visible light spectrum.

Advanced Light-Shielding Technology for Improved Image Contrast
Thanks to PENTAX’s advanced computer simulation technology, the XW series features a light-shielding diaphragm at the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image.

Clear, Comfortable Viewing assured by 70° Apparent Angle of View and 20mm Eye Relief. All smc PENTAX XW-series eyepieces feature an extra-wide 70-degree apparent angle of view and an extra-long 20mm eye relief to deliver an exciting, wide-perspective image.

High-Grade Optics for Exceptional Image Quality
The high-performance XW-series optics incorporate high-refraction, extra-low-dispersion lanthanum lens elements to produce a well-balanced image with minimal aberrations. Specifically designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.

20mm focal length with 1.25" barrel
SMC multi coatings
Lanthanum low dispersion lens
Threaded for 1.25" filters
20mm eye relief
70 degree field
Rotating adjustable eyecup
JLS class 4 waterproofing
Dust caps & storage bottle included

Our delivery charge for most of the UK is £3.95. All orders are shipped promptly, lower value items are sent Royal Mail 1st class and higher value or larger goods are shipped via reputable courier. All goods are shipped fully insured with FEDEX, UPS, DPD, DHL and Royal Mail, we do not use budget courier services, we can only ship to UK mainland addresses and are not able to ship to forwarding agents or PO boxes.

Our Order Lookup system (see very top of each page for the icon and link) updates the order status in real time for you - simply by entering your order number and postcode..

We ship each business day, orders received before lunch are normally shipped that business day. We also direct ship from our UK suppliers, this means we have access to thousands of products that can ship fast to our customers.

Deliveries to UK mainland addresses are all shipped with fully insured premium services for £3.95, *some exceptions apply including many AB, FK, HS, IV, KA, KW, PA, PH, ZE postcodes. We will quote delivery charges to these areas where applicable prior to shipping (this does not normally affect lower value items shipped by Royal Mail).

You must inform us within one working day if the goods are lost or damaged in transit so that we can make a prompt claim against the delivery company and correct the problem. Please ensure all address details are accurate, we cannot be responsible for failed deliveries or losses arising from incorrect delivery addresses.

You agree that proof of delivery supplied by our delivery company is sufficient evidence to establish that goods have been received.

If your product is sent by Courier they will attempt delivery twice and a signature will be required. If they are unable to deliver because you are not available and after 5 days you have not contacted them to re-arrange. the goods will be returned to us and the return delivery costs may be charged to you

Pentax XW 20mm Eyepiece

MPN: 70516

Price: 249.00

Including VAT and Warranty ✔


Coming soon - The high-performance XW 20mm eyepiece incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations. The XW range are specifically designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.

SMC coatings and specially applied internal partial coatings provide an extraordinary 96% light transmission at 550nm.

Related products:

Pentax XW 14mm Eyepiece
Pentax XW 10mm Eyepiece

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