# Celestron SkyMaster Pro ED 20x80mm Porro binocular BaK-4 Black

**URL:** https://aio.lv/en/product--celestron-72035--11164938
**Data updated:** 2026-02-25 16:40 (EET)
**Category:** Binoculars
**Manufacturer:** Celestron
**Manufacturer code:** 72035
**EAN:** 0050234720359
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Celestron SkyMaster Pro ED 20x80mm binoculars offer 20x magnification and an 80mm objective lens for bright, clear images. With BaK-4 prisms, they provide excellent light transmission and image quality. Ideal for astronomy and wildlife observation, these binoculars are designed for serious enthusiasts. Their robust construction ensures durability, making them suitable for outdoor use.

## Long description

The Celestron SkyMaster Pro ED 20x80mm Porro binoculars combine 20x magnification with 80 mm objective lenses, BaK-4 prisms and ED glass to deliver bright, high-contrast views at long distances. Designed for serious astronomy and long-range terrestrial observation, these binoculars use fully multi-coated optics with Celestron’s XLT coatings to maximize light transmission and reduce reflections. The Porro prism layout and large objective diameter support improved depth perception and strong low-light performance while a rugged rubber-armored chassis and retractable eyecups provide practical field durability and comfortable viewing for eyeglass and non-eyeglass wearers.
Advantages
ED objective lenses reduce chromatic aberration and improve edge-to-edge sharpness, producing clearer, more accurate color rendition than standard glass. BaK-4 prisms combined with fully multi-coated lens surfaces and XLT coatings increase optical throughput, yielding brighter images with better contrast in dusk, dawn, and nighttime conditions. The 80 mm objectives offer substantial light-gathering capability for faint deep-sky targets and distant terrestrial subjects, while the Porro prism design enhances three-dimensional perception. Built-in features such as retractable eyecups with more than 15 mm eye relief and a tripod-adaptable balance rail add versatility for extended observing sessions or digiscoping.
Suitable for
Astronomy: Moon, planets and bright deep-sky objects
Wildlife observation at long distances
Coastal and marine watching at dawn or dusk
Digiscoping and tripod-mounted photography
Landscape scanning and long-range terrestrial surveillance
Key specifications
Magnification: 20x
Objective diameter: 80 mm
Prism type: BaK-4
Exit pupil: 4 mm
Optical elements: Extra-Low Dispersion (ED) glass with fully multi-coated lenses and XLT coatings
Optical design: Porro prism configuration for enhanced depth perception
Body: Rubber-armored chassis with retractable eyecups and \>15 mm eye relief
Tripod adaptability: Built-in adapter on a balance compensation rail
Weight: 3.492 kg
Color: Black
How to use
Hold the binoculars steady and adjust the central focus wheel until the image is sharp. Use the right-eye diopter adjustment to compensate for differences between your eyes, then fine-tune the central focus for both eyes. Retract or extend the eyecups to achieve comfortable eye relief—twist the eyecups down to use the binoculars with glasses. For prolonged observation or higher stability at 20x magnification, mount the binoculars on a standard photographic tripod using the built-in adapter on the balance rail. When using filters or 1.25” astronomical eyepieces, thread them carefully into the eyepiece housings to ensure correct alignment.
Usage recommendations
For best results in low-light astronomy and long-distance observation, use a sturdy tripod or monopod to reduce shake. Clean lenses with a soft brush and lens cloth; avoid touching optical surfaces with fingers. When observing bright objects such as the Moon, consider neutral density or lunar filters to reduce glare. Store the binoculars in a dry place and use the protective case to prevent impacts; allow optics to acclimatize to outdoor temperatures before precise focusing.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 3.492 kg |
| Height | 94 mm |
| Width | 335 mm |
| Depth | 230 mm |

### Performance

| Feature | Value |
|---|---|
| Brightness | 16 cd/m² |
| Tripod mounting supported | Yes |
| Product colour | Black |
| Magnification | 20 x |
| Objective diameter | 80 mm |
| Exit pupil | 4 mm |
| Apparent field of view | 3.4 ° |
| Closest focusing distance | 30 m |
| Eye relief | 15.4 mm |
| Prism type | BaK-4 |
| Lens coating | Fully Multi Coated (FMC) |
| Waterproof | Yes |
| Diopter compensation (±) | 3 |
| Twilight factor | 40 |
| Field of view (at 1000 m) | 59 m |
| Adjustable interpupillary distance | Yes |
| Interpupillary distance (min) | 56 mm |
| Interpupillary distance (max) | 72 mm |

### Packaging content

| Feature | Value |
|---|---|
| Carrying case | Yes |
| Cleaning cloth | Yes |
| Lens cap included | Yes |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Leasing for legal entities. 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 Celestron 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 Celestron 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: prism type, weight, magnification, exit pupil, objective diameter, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Celestron SkyMaster Pro ED 20x80mm Porro binocular?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11164938/66751634_large.webp