# Eyepiece Beta Hyperion 21mm 2"/1.25" (MPN 2454621) — interchangeable barrel

**URL:** https://aio.lv/en/product--beta-2454621--11364797
**Data updated:** 2026-03-31 13:04 (EEST)
**Category:** Glasses
**Manufacturer:** Beta
**Manufacturer code:** 2454621
**EAN:** 4047825011411
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 176.49 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 145.86 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--beta-2454621--11364797

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 18.06.2026 | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

Beta Hyperion 21mm eyepiece with dual 2"/1.25" compatibility (MPN 2454621). Designed for visual astronomy, it offers a 21 mm focal length and interchangeable barrel size to fit different telescopes. Suitable for planetary and deep-sky observation, it provides comfortable eye relief and practical flexibility when switching instruments or accessories.

## Long description

Beta Hyperion 21mm eyepiece with interchangeable 2"/1.25" barrel provides a 21 mm focal length optimized for visual astronomy. The eyepiece is designed to work with both 2-inch and 1.25-inch focuser openings, allowing quick adaptation between different telescopes and accessories. It is intended for observing planets, the Moon and many deep-sky objects while offering comfortable eye relief for extended viewing sessions.
Advantages
The eyepiece combines a moderate focal length with dual-barrel compatibility, reducing the need for separate eyepieces or adapters. Its optical design delivers a clear, contrasty image across the field of view and supports comfortable eye positioning for eyeglass wearers. The interchangeable barrel system simplifies swapping between instruments and accessories without tools.
Suitable for
 Planetary observation and lunar viewing
 Medium-power views of star clusters and brighter deep-sky objects
 Use with telescopes that accept 2" or 1.25" eyepieces
 Observers who need quick barrel changes between instruments
Key specifications
 Focal length: 21 mm
 Barrel compatibility: interchangeable 2" and 1.25"
 Designed for visual astronomy: planets, Moon, brighter DSOs
 Comfortable eye relief suitable for general viewing and eyeglass wearers
 Standard parfocal length for common telescope focusers
How to use
Insert the eyepiece into the telescope focuser in the chosen barrel size and secure it with the focuser's locking thumbscrews. If your telescope requires the alternate barrel size, remove the removable barrel section and replace it according to the eyepiece's interchange mechanism. Allow the telescope to reach thermal equilibrium and focus carefully using the focuser to obtain a sharp image. For best results, start with low to medium magnification and adjust as needed for target detail and seeing conditions.
Usage recommendations
Store the eyepiece in a padded case or protective pouch when not in use to prevent dust and mechanical damage. Clean lenses only with a soft brush or lens tissue and appropriate optical cleaner applied sparingly. Use the 2" barrel for wider-field viewing on compatible focusers and the 1.25" barrel for standard adapters or accessories.

## FAQ

### How much does the Eyepiece Beta Hyperion 21mm 2"/1.25" cost, and is it available for purchase?

The price is 176.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 18.06.2026 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 Eyepiece Beta Hyperion 21mm 2"/1.25" 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 Beta 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 Beta 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/11364797/65878106_large.webp