# Eyepiece Skywatcher SWA-58 4mm 1.25" — astronomical eyepiece, 4 mm focal length, 1.25-inch barrel

**URL:** https://aio.lv/en/product--skywatcher-sw-5104--11364826
**Data updated:** 2026-02-25 16:40 (EET)
**Category:** Glasses
**Manufacturer:** Skywatcher
**Manufacturer code:** SW-5104
**EAN:** 5901691603257
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 64.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 53.71 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--skywatcher-sw-5104--11364826

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Skywatcher SWA-58 4mm 1.25" eyepiece is an astronomical eyepiece with a 4 mm focal length and standard 1.25-inch barrel for compatibility with many telescopes. Designed for high-magnification planetary and lunar observation, it offers precise framing and fine detail resolution. Suitable for visual observing and basic astrophotography adapters; compact and easy to install.

## Long description

Skywatcher SWA-58 4mm 1.25" eyepiece is a compact astronomical eyepiece with a 4 mm focal length and a standard 1.25-inch barrel that fits most amateur telescopes. It is engineered for high-magnification views of the Moon and planets, offering a narrow but precise field of view that helps resolve fine surface details. The eyepiece is suitable for visual observing and can be used with basic astrophotography adapters for afocal imaging.
Advantages
The eyepiece provides high angular magnification with a short focal length, enabling detailed observation of planetary features and lunar craters. Its 1.25-inch barrel ensures broad compatibility with common telescope focusers and diagonals. The compact and lightweight design makes installation and handling straightforward, and optical correction in the SWA series helps maintain acceptable edge sharpness for such a short focal length.
Suitable for
 High-magnification visual observation of planets and the Moon
 Splitting close binary stars under good seeing conditions
 Detail-focused sessions with small to medium aperture telescopes
 Afocal astrophotography using a camera or smartphone adapter
Key specifications
 Focal length: 4 mm
 Barrel diameter: 1.25 inches (standard)
 Type: Short focal length, high-magnification eyepiece
 Intended use: Visual planetary and lunar observation; compatible with afocal imaging adapters
 Form factor: Compact, lightweight construction suitable for easy mounting
How to use
Insert the eyepiece into the telescope focuser or diagonal and secure the retaining screw. Start with lower magnification eyepieces to locate and center the target, then switch to the 4 mm eyepiece for detailed viewing. Allow the telescope to reach thermal equilibrium and use slow, steady focusing adjustments to obtain the sharpest image. For afocal imaging, align a camera or smartphone adapter with the eyepiece optical axis and adjust position to fill the frame without vignetting.
Usage recommendations
Use the 4 mm eyepiece under stable atmospheric seeing and with sufficient aperture to benefit from the high magnification. Because high magnification reduces field of view and image brightness, pair this eyepiece with a telescope of appropriate focal length and aperture, and consider using a tracking mount for longer observing sessions or imaging.

## FAQ

### How much does the Eyepiece Skywatcher SWA-58 4mm 1.25" cost, and is it available for purchase?

The price is 64.99 € (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 29.06.2026 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. All transactions are 100% secure and encrypted.

### 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 Skywatcher 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 Skywatcher 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/11364826/65878090_large.webp