# Refractor telescope Skywatcher BK 909 AZ3 90 mm aperture 900 mm focal length

**URL:** https://aio.lv/en/product--skywatcher-sw-2107--11370947
**Data updated:** 2026-02-25 16:40 (EET)
**Category:** Telescopes
**Manufacturer:** Skywatcher
**Manufacturer code:** SW-2107
**EAN:** 5901691609099
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 260.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 215.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--skywatcher-sw-2107--11370947

## 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 | 7.50 EUR |

## Summary description

Skywatcher BK 909 AZ3 is a refractor telescope with a 90 mm aperture and 900 mm focal length, mounted on an AZ3 alt-azimuth mount. Designed for lunar, planetary and bright deep-sky observations, it provides a stable viewing platform and straightforward manual operation. Suitable for beginners and amateur astronomers seeking a portable instrument for visual observing and basic astrophotography with short exposures.

## Long description

Skywatcher BK 909 AZ3 is a refractor telescope with a 90 mm aperture and 900 mm focal length mounted on an AZ3 alt-azimuth mount. The optical design and moderate focal ratio deliver clear views of the Moon and planets and allow useful results for bright deep-sky objects. The kit provides a stable, manually operated platform that is suited to visual observing and basic short-exposure astrophotography when paired with a compatible camera or eyepiece adapter.
Advantages
The 90 mm objective gathers enough light for crisp lunar and planetary detail while remaining portable for transport to observing sites. The 900 mm focal length balances magnification and field of view, making it practical for both high-contrast planetary observation and framing brighter nebulae and star clusters. The AZ3 alt-azimuth mount offers straightforward altitude-azimuth movement and a lightweight tripod for rapid setup. Manual controls and simple mechanics reduce maintenance and make the instrument accessible to beginners and hobbyists.
Suitable for
 Visual observation of the Moon and planets
 Viewing brighter deep-sky objects such as open clusters and some nebulae
 Portable backyard astronomy and field use
 Beginner to intermediate amateur astronomers
 Basic short-exposure astrophotography with appropriate camera adapters
Key specifications
 Optical type: refractor
 Aperture: 90 mm
 Focal length: 900 mm
 Focal ratio: f/10
 Mount type: alt-azimuth (AZ3)
 Manual pointing and tracking
 Included tripod: lightweight adjustable tripod
 Suitable for visual observing and short-exposure imaging
How to use
Set up the AZ3 tripod on firm, level ground and attach the optical tube securely. Start with a low-power eyepiece to locate targets and center them in the field of view; then switch to higher magnification for detailed lunar and planetary observation. Use slow-motion controls or manual adjustments on the mount to follow objects across the sky. For short-exposure astrophotography, attach a compatible camera or eyepiece projection adapter and use short exposures to avoid star trailing; ensure the camera is balanced and secured before imaging.
Использование и советы
Allow the telescope to reach ambient temperature before detailed observation to improve image stability. Use a suitable set of eyepieces, a Barlow lens, and filters (e.g., lunar or planetary filters) to enhance contrast. For transport, remove the optical tube from the mount and secure all accessories to prevent damage.

## FAQ

### How much does the Refractor telescope Skywatcher BK 909 AZ3 cost, and is it available for purchase?

The price is 260.49 € (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 Refractor telescope Skywatcher BK 909 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/11370947/65858376_large.webp