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

**URL:** https://aio.lv/en/product--pentax-70516--11044154
**Data updated:** 2026-11-04 08:37 (EET)
**Category:** Telescopes
**Manufacturer:** PENTAX
**Manufacturer code:** 70516
**EAN:** 0027075075245
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 345.49 €
**Prices and availability valid until:** 2026-12-12 23:59
**Price without VAT (21%):** 285.53 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--pentax-70516--11044154

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.11.2026 | free |
| Pickup points | 26.11.2026 | 1.99 EUR |
| Courier delivery to door | 26.11.2026 | 4.99 EUR |

## Summary 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.

## Long 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.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.355 kg |
| Height | 100 mm |
| Focal length range | 20 |
| Filter size | 28.6 mm |
| Width | 85 mm |
| Depth | 190 mm |
| Product colour | Black |
| Lens structure (elements/groups) | 6/4 |
| Compatible products | PF-65, PF-65 ED 2, PF-80, PF-100 |
| Apparent field of view | 70 ° |
| Eye relief | 20 mm |
| Country of origin | Japan |
| Field stop diameter | 24 mm |
| Eyepiece ring type | Helicoid |

## FAQ

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

The price is 345.49 € (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 23.11.2026 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. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11044154/70879007_large.webp