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header-product PENTAX XW 20 Eyepiece Black 20 mm Focal Length 70° Field of View
346.49 €

PENTAX XW 20 Eyepiece Black 20 mm Focal Length 70° Field of View

PENTAX XW 20 Eyepiece Photo 1
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PENTAX XW 20 Eyepiece Black 20 mm Focal Length 70° Field of View

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Short description

PENTAX XW 20 eyepiece in black featuring a 20 mm focal length, 70° apparent field of view, 6/4 lens structure, 2 cm eye relief, and helicoid eyepiece ring. Designed for compatibility with PF-65, PF-80, and PF-100 spotting scopes.
Available for order: 3 pcs.
Warranty: 2 Years
SKU: 11044154
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
19.11.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
24.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.54 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
24.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 9.62 euros per month
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Product information

Description

The PENTAX XW 20 Eyepiece Black 20 mm Focal Length 70° Field of View is a high-performance optical accessory engineered to deliver exceptional visual clarity and comfort during astronomical and terrestrial observations. Designed by PENTAX, this black eyepiece integrates advanced optical technologies, including high-refraction lanthanum glass elements and fully multi-coated lenses, to maximize light transmission, enhance color accuracy, and reduce optical aberrations. Built with a durable JIS Class 4 weatherproof construction, it is suitable for various outdoor viewing conditions and pairs seamlessly with compatible PENTAX spotting scopes such as the PF-65, PF-80, and PF-100 series.

Advantages

This eyepiece utilizes a sophisticated 6/4 lens structure designed through advanced computer simulation technology to ensure sharp, high-resolution imagery across the entire viewing plane. Users benefit from a generous 2 cm eye relief, which allows for comfortable viewing even during extended observation sessions, making it particularly advantageous for individuals wearing eyeglasses. The incorporation of high-refraction lanthanum glass effectively minimizes optical distortions, while the multi-coated optics guarantee bright and clear images. Additionally, the integrated helicoid eyepiece ring allows for precise and easy adjustment to suit individual user preferences.

Suitable for

  • Astronomical observations of stars, planets, and deep-sky objects
  • Terrestrial viewing and nature observation with spotting scopes
  • Extended viewing sessions for users wearing eyeglasses
  • Outdoor observation in varying weather conditions thanks to weatherproof housing

When it may not be suitable

This eyepiece may not be suitable if you require a different focal length for higher magnification demands that exceed the capabilities of a 20 mm lens. Furthermore, it is specifically designed for compatibility with designated PENTAX spotting scope models and may not fit optical systems from other manufacturers without appropriate adapters.

Key specifications

  • Focal length: 20 mm
  • Apparent field of view: 70°
  • Lens structure: 6/4 elements and groups
  • Eye relief: 2 cm
  • Filter size: 28.6 mm
  • Field stop diameter: 2.4 cm
  • Eyepiece ring type: Helicoid
  • Weight: 355 g
  • Dimensions: 85 mm x 190 mm x 100 mm

How to use

To use the PENTAX XW 20 eyepiece, first remove the protective caps from both ends of the accessory. Insert the barrel of the eyepiece into the compatible 1.28-inch receiver of your PENTAX spotting scope or telescope, and secure it firmly according to your instrument's locking mechanism. Adjust the helicoid eyepiece ring by twisting it to achieve the correct eye distance, particularly if you wear eyeglasses. Focus the optical instrument using its primary focusing wheel until the image appears sharp and clear across the 70-degree field of view.

What to consider before purchase

  • Verify compatibility with your existing spotting scope or telescope model, specifically ensuring it matches supported PENTAX series such as PF-65, PF-80, or PF-100
  • Assess whether a 20 mm focal length and 70-degree field of view align with your preferred magnification and observation requirements
  • Consider the physical dimensions and weight of 355 g to ensure it balances well with your optical setup
Usage recommendations: Store the eyepiece in a dry, dust-free environment with protective caps attached when not in use. Clean optical surfaces exclusively with specialized lens cleaning materials to preserve the multi-coating integrity. Avoid exposing the unit to extreme moisture or direct impact despite its weatherproof construction.
All features
Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.355 kg
Height: The measurement of the product from head to foot or from base to top.
100 mm
Focal length range: Measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A system with a shorter focal length has greater optical power than one with a long focal length; that is, it bends the rays more strongly, bringing them to a focus in a shorter distance.For an optical system in air, the effective focal length (f and f′) gives the distance from the front and rear principal planes (H and H′) to the corresponding focal points (F and F′).
20
Filter size: A filter is a screen, plate, or layer of a substance which absorbs light or other radiation or selectively absorbs some of its components e.g. a UV filter to reduce UV light. Filters come in various sizes.
28.6 mm
Width: The measurement or extent of something from side to side.
85 mm
Depth: The distance from the front to the back of something.
190 mm
Product colour: The colour e.g. red, blue, green, black, white.
Black
Lens structure (elements/groups): The way in which a camera lens is constructed.
6/4
Compatible products: Other products that can be used with this product.
PF-65, PF-65 ED 2, PF-80, PF-100
Apparent field of view:
70 °
Eye relief:
20 mm
Country of origin: Country where the device is made. Aka Country of manufacture (COM).
Japan
Field stop diameter:
24 mm
Eyepiece ring type:
Helicoid

Description

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Customer reviews

Customer questions

FAQ

How much does the PENTAX XW 20 Eyepiece cost, and is it available for purchase?

The price is 346.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 19.11.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can PENTAX XW 20 Eyepiece be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the PENTAX XW 20 Eyepiece online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All PENTAX products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized PENTAX service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy
We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008
AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.