# Refractor telescope Skywatcher BK 804 AZ3 80mm aperture 400mm focal length

**URL:** https://aio.lv/en/product--skywatcher-sw-2105--11370967
**Data updated:** 2026-02-25 16:40 (EET)
**Category:** Telescopes
**Manufacturer:** Skywatcher
**Manufacturer code:** SW-2105
**EAN:** 5901691600072
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 229.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 190.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--skywatcher-sw-2105--11370967

## 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 | 7.96 EUR |

## Summary description

Skywatcher BK 804 AZ3 is a refractor telescope with an 80 mm aperture and 400 mm focal length, supplied with an AZ3 alt-azimuth mount. Designed for lunar, planetary and bright deep-sky observations, it offers a compact, portable setup suitable for beginners and casual observers. The optical configuration provides wide-field views and straightforward setup for backyard use and outreach.

## Long description

The Skywatcher BK 804 AZ3 is a refractor telescope with an 80 mm aperture and a 400 mm focal length, supplied with an AZ3 alt-azimuth mount. The instrument is configured for wide-field viewing and delivers bright, high-contrast images suitable for lunar and planetary observation as well as bright deep-sky objects. Its compact optical tube and simple alt-azimuth mount make the setup straightforward for backyard use, outreach events and travel when a portable, easy-to-operate telescope is required.
Advantages
The 80 mm objective gathers enough light for clear views of the Moon, planets and larger star clusters while keeping the instrument lightweight. The short 400 mm focal length produces a wide apparent field of view, facilitating low- to medium-power observations and making star-hopping and framing of extended objects easier. The included AZ3 mount provides intuitive altitude-azimuth movement for quick target acquisition and tracking by hand, and the overall package is compact for storage and transport.
Suitable for
 Visual lunar and planetary observation
 Wide-field views of open clusters and bright nebulae
 Beginner astronomy and outreach demonstrations
 Portable observing sessions and travel
Key specifications
 Optical type: refractor (achromatic design)
 Aperture: 80 mm
 Focal length: 400 mm (f/5)
 Mount type: alt-azimuth (AZ3)
 Typical use: visual observation of solar system and bright deep-sky objects
 Form factor: compact and lightweight optical tube
How to use
Assemble the optical tube on the AZ3 mount following the supplied instructions, ensuring the dovetail or mounting bracket is securely fastened. Start with a low-power eyepiece to locate targets and centre them in the field, then switch to higher magnification as needed. Use the mount’s altitude and azimuth controls to point and track objects manually; the short focal length gives a wide field that eases locating targets. Balance the setup on the mount and tighten adjustment knobs to maintain stability during observation.
Usage recommendations
For best observing results, allow the telescope to reach thermal equilibrium with the outside temperature before making high-magnification observations. Use low- to medium-power eyepieces for wide-field viewing and switch to higher powers only when atmospheric seeing is steady. Store the telescope in a dry place and protect the objective lens with a cover when not in use to preserve optical performance.

## FAQ

### How much does the Refractor telescope Skywatcher BK 804 AZ3 cost, and is it available for purchase?

The price is 229.99 € (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 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 Refractor telescope Skywatcher BK 804 AZ3 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/11370967/65858396_large.webp