# Focal reducer Skywatcher ED80 0.85x for Sky-Watcher ED80 refractor telescopes

**URL:** https://aio.lv/en/product--skywatcher-sw-5408--11370944
**Data updated:** 2026-03-31 13:04 (EEST)
**Category:** Telescopes
**Manufacturer:** Skywatcher
**Manufacturer code:** SW-5408
**EAN:** 5901691604490
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 278.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 230.16 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--skywatcher-sw-5408--11370944

## 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

Focal reducer Focal reducer Skywatcher ED80 0.85x is designed for use with the Sky-Watcher ED80 refractor telescope. It decreases the telescope focal length by a factor of 0.85 to provide a wider field of view and faster focal ratio, improving framing of extended deep-sky objects and reducing exposure time for astrophotography. It mounts between the focuser and camera or eyepiece and preserves compatibility with ED80 optical train.

## Long description

The Focal reducer Skywatcher ED80 0.85x for Sky-Watcher ED80 refractor telescopes reduces the effective focal length by a factor of 0.85, delivering a wider true field of view and a faster focal ratio when used with the Sky-Watcher ED80 optical tube. Designed to fit between the telescope focuser and the camera or eyepiece, this reducer preserves the ED80 optical train while improving framing for extended deep-sky objects and decreasing required exposure times for astrophotography. The mechanical interface and optical spacing are optimized for the ED80 refractor to maintain image quality across the field.
Advantages
The focal reducer widens the field of view and shortens the focal ratio, allowing larger areas of the sky to be captured in a single frame and enabling shorter exposures for the same signal level. It is optically matched to the ED80 refractor to limit aberrations and maintain sharpness toward the edges of the image when used at the recommended backfocus. The unit installs between the focuser and camera or eyepiece, providing a straightforward mechanical connection without modifying the telescope.
Suitable for
 Wide-field astrophotography of extended nebulae, star fields and large galaxies
 Visual observation when a wider true field is required
 Imaging sessions where reduced exposure time is beneficial
 Use with dedicated astronomy cameras and DSLR/mirrorless cameras
Key specifications
 Reduction factor: 0.85x (reduces focal length to 85% of original)
 Compatibility: designed for use with ED80 refractor optical tube
 Optical configuration: multi-element design optimized for ED glass optics
 Mounting position: placed between focuser and camera/eyepiece with defined backfocus
 Effect: wider field of view and faster effective focal ratio for imaging
How to use
Attach the focal reducer to the telescope by inserting it between the focuser drawtube and your camera adapter or eyepiece holder, ensuring correct mechanical engagement. Set the recommended backfocus distance for the ED80 refractor to achieve optimal image quality; consult the telescope documentation for the exact spacing value. After mounting, perform a collimation or framing check and focus carefully using live view or a focusing aid. For imaging, set exposure parameters considering the faster focal ratio and verify that stars remain round across the frame; adjust spacing slightly if necessary.
Usage recommendations
Use with cameras that allow precise focus and spacing control; confirm the proper backfocus distance for your specific ED80 setup to minimize field curvature and off-axis aberrations. When capturing wide fields, check for vignetting and, if present, use appropriate flat-field calibration frames during processing.

## FAQ

### How much does the Focal reducer Skywatcher ED80 0.85x cost, and is it available for purchase?

The price is 278.49 € (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 Focal reducer Skywatcher ED80 0.85x 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/11370944/65858373_large.webp