# Eyepiece Skywatcher 12.5mm 1.25 inch Illuminated – Skywatcher SW-5900

**URL:** https://aio.lv/en/product--skywatcher-sw-5900--11364799
**Data updated:** 2026-03-31 13:04 (EEST)
**Category:** Glasses
**Manufacturer:** Skywatcher
**Manufacturer code:** SW-5900
**EAN:** 5901691601109
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 85.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 70.65 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--skywatcher-sw-5900--11364799

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 25.06.2026 | free |
| Pickup points | 30.06.2026 | 1.99 EUR |
| Courier delivery to door | 30.06.2026 | 4.99 EUR |

## Summary description

12.5 mm Skywatcher 1.25-inch illuminated eyepiece (model SW-5900) for telescopes. Provides 12.5 mm focal length in a standard 1.25" barrel, with illuminated reticle for easier centering and low-light targeting. Suitable for planetary, lunar and general observation; useful for guiding, alignment and improving target acquisition. Compatible with most 1.25" focusers and star charts.

## Long description

The Skywatcher 12.5mm 1.25 inch Illuminated Eyepiece (model SW-5900) is a dedicated telescope eyepiece that provides a 12.5 mm focal length in a standard 1.25" barrel. Designed for use with most 1.25" focusers, this eyepiece features an illuminated reticle to simplify centering, alignment and targeting in low-light conditions. It is suitable for planetary and lunar observation as well as general visual astronomy, and can be used for guiding and improving target acquisition when pairing with appropriate mounts and finders.
Advantages
The illuminated reticle offers consistent crosshair visibility without external light sources, aiding precise centering of objects and calibration of mounts. The 12.5 mm focal length delivers a balanced combination of magnification and field of view for detailed views of the Moon and planets while remaining useful for star fields and double stars. Its standard 1.25" barrel ensures broad compatibility with a wide range of telescopes and accessories, and the mechanical construction is compact and easy to insert or remove from the focuser.
Suitable for
 Planetary and lunar observation
 Target acquisition and centering with illuminated reticle
 Guiding and alignment during astrophotography or tracking setup
 General visual astronomy with 1.25" focusers
Key specifications
 Focal length: 12.5 mm
 Barrel diameter: 1.25 inches (standard)
 Illuminated crosshair (adjustable brightness)
 Compatible with standard 1.25" telescope focusers and eyepiece holders
 Optical design: single eyepiece unit with integrated reticle
How to use
Insert the 1.25" eyepiece into the focuser and secure it using the focuser's locking mechanism. Power the illumination system according to the eyepiece's control (battery or external power as applicable) and adjust brightness to a comfortable level that preserves night vision while keeping the reticle visible. Use the illuminated reticle to center targets by aligning the object with the crosshair; fine adjustments of the telescope mount or focuser will improve centering accuracy. When finished, switch off the illumination and carefully remove the eyepiece for storage.
Usage recommendations
For best results, set illumination brightness low enough to maintain dark-adapted vision, especially during deep-sky viewing. Use the eyepiece for precise alignment procedures and guiding tasks; pair it with compatible 1.25" adapters or Barlow lenses only if the optical path and back focus are appropriate for your telescope.

## FAQ

### How much does the Eyepiece Skywatcher 12.5mm 1.25" Illuminated SW-5900 cost, and is it available for purchase?

The price is 85.49 € (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 25.06.2026 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 Skywatcher 12.5mm 1.25" Illuminated SW-5900 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 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/11364799/65878111_large.webp