Celestron SkyMaster Pro ED 15x70 Porro Prism Binoculars — Premium large-aperture astronomy binoculars pairing 15× magnification and 70mm objectives with extra-low dispersion glass for detailed, high-contrast views with reduced chromatic aberration.
Detailed 15×70 Astronomy Views
The 70mm objectives gather substantial light for the Moon, star clusters, brighter nebulae and long-distance terrestrial subjects. A 4.4° field balances higher magnification with a useful sky area for locating and framing targets.
ED Glass and XLT Fully Multi-Coated Optics
Extra-low dispersion objective glass reduces chromatic aberration so bright objects show less colour fringing, with improved contrast, colour fidelity and fine detail. BaK-4 Porro prisms and Celestron's XLT fully multi-coated optical surfaces support bright, high-contrast views across the optical path.
The widely spaced Porro objectives also enhance depth perception for terrestrial viewing.
Comfortable Centre Focusing
A central focus wheel adjusts both barrels, while the right-eyepiece dioptre provides ±3 compensation for differences between the user's eyes. Padded twist-up eyecups offer retracted, intermediate and extended positions for viewing with or without spectacles.
Each eyepiece is threaded for compatible standard 1.25-inch astronomical filters. Filters are optional and are not included. Never use these threads with solar eyepiece filters.
IPX7 Waterproof and Nitrogen Filled
The rubber-armoured housing is rated waterproof to IPX7 and filled with dry nitrogen gas to help prevent internal fogging. Keep the binocular clean and dry after use and replace all lens caps before storage.
Tripod Mounting
The binocular has tripod-adapter threads beneath the front logo plate. At 2.089kg and 15× magnification, use with a suitable tripod is strongly recommended. A compatible binocular tripod adapter and tripod are sold separately.
What Is Included?
- SkyMaster Pro ED 15x70 binoculars
- Objective lens caps
- Eyepiece covers / rainguard
- Neck strap
- Lens cloth
- Non-silica desiccant
- Deluxe nylon carrying case
- Five-language instruction manual
Please note: A tripod, optional astronomy filters and any item not listed above are not stated as included. A binocular tripod adapter is sold separately.
Specifications
Optics and Viewing
| Optical design | Porro prism binocular with ED objective lenses |
|---|---|
| Magnification | 15× |
| Objective diameter | 70mm |
| Angular field of view | 4.4° |
| Linear field of view | 77m at 1,000m (230ft at 1,000yd) |
| Exit pupil | 4.4mm |
| Eye relief | 15.7mm |
| Close focus | 13m (42.7ft) |
| Interpupillary distance | 56–72mm |
| Dioptre adjustment | ±3 |
| Focusing system | Centre focus with right-eyepiece dioptre |
| Lens coatings | Fully multi-coated with Celestron XLT coatings |
| Prism glass | BaK-4 |
| Twilight factor | 32.4 |
| Relative brightness | 21.78 |
| Limiting stellar magnitude | 11.73 ideal; 10.73 moderate; 9.73 poor conditions |
| Eyepiece filter compatibility | Standard threaded 1.25-inch astronomical filters; filters not included |
Construction and Size
| Environmental protection | Waterproof (IPX7) |
|---|---|
| Nitrogen filled | Yes |
| Tripod mounting | Built-in ¼-inch tripod-adapter threads beneath front logo plate; adapter sold separately |
| Carrying case | Deluxe nylon carrying case |
| Dimensions | 258 × 220 × 85mm (10.2 × 8.7 × 3.4 inches) |
| Published binocular weight | 2.089kg (73.7oz) |
Solar Safety
Warning: Never look directly at or near the Sun through these binoculars.
These are not solar binoculars. Unfiltered sunlight can cause immediate and permanent eye injury and may damage the binoculars.
Never project an image of the Sun and never attach an eyepiece-type solar filter.
Instruction Manual
The official SkyMaster Pro ED instruction manual covers items 72033, 72034 and 72035 and is provided in English, French, German, Italian and Spanish.