- All Products
- Shop by Brands
- BW Technologies
- BW Technologies
- BW Technologies Monitors
- Models
- BW Clip
- BW Clip4
- GasAlertClip Extreme
- GasAlert Extreme
- GasAlertMicroClip XT
- GasAlertMicroClip XL
- GasAlertMicroClip X3
- GasAlertQuattro
- GasAlertMax XT II
- GasAlertMicro 5 Series
- SamplerPak
- IntelliDox Docking System
- MicroDock II
- BW Ultra
- BW Solo
- Gas Monitors
- Gas Monitor Manufacturers
- BW Technologies
- Bacharach
- Biosystems
- Crowcon
- Gas Clip Technologies
- GfG Instruments
- GMI/Detcon
- Honeywell Analytics
- Industrial Scientific
- MSA
- RAE Instruments
- RKI Instruments
- Calibration Gas
- Combustion Analyzers
- Water Quality
- Reliability Instruments
- Refractometers
- HVAC
- Weather
- Temperature
- Laboratory
- Sound
- IAQ
- Electrical
- All Categories
Celestron SkyMaster 18 - 40x80 Zoom - 71021
Item #:
CEL-71021
Brand:
Celestron
Share this product:
71021 SkyMaster 18 - 40x80 Zoom by Celestron
Celestron's SkyMaster Series of large aperture binoculars are a phenomenal value for high performance binoculars. Ideal for astronomical viewing or for terrestrial (land) use, especially over long distances. SkyMaster models feature high quality BaK-4 prisms and multi-coated optics for enhanced contrast. Celestron has designed and engineered the larger SkyMaster models to meet the special demands of extended astronomical or terrestrial viewing sessions.
- Lower magnification allows the user to locate a subject more easily and then zoom in for a close-up view
- Multi-coated optics enhances sharpness of detail and crispness of color
- High quality BaK-4 prisms provide higher light transmission for better viewing in low light conditions
- Large objective diameter provides a comfortable viewing aperture at high magnification levels
- Long eye relief for more comfortable for all users; essential for those wearing eyeglasses while viewing
- Diopter adjustment allows for refinement of image to correct for any differences in strength between the users own eyes
- Tripod adapter included to mount the binocular on a tripod for prolonged viewing sessions or simply for increased stability while observing
- Limited Lifetime Warranty
Objective Lens Diameter (mm) | 80 mm |
Magnification (x) | 18-40x |
Angular Field of View | 18:1.9° |
Exit Pupil (mm) | 4.4 @ 18x: 2.0 @ 40x |
Eye Relief (mm) | 20.3 @ 18x |
Linear Field of View | 18x: 96.0 ft. @ 1,000 yds. / 33.2m @ 1000m |
Close Focus | 18x: 106.2 ft. / 32.4m |
Optical Coatings | Multi-Coated |
Prism Glass (Type) | BaK-4 |
Twilight Factor | 44.72 |
Relative Brightness | 10.24 |
Weatherproof | Water Resistant |
Tripod Adaptable | Yes |
Weight | 76 oz (2155 g) |