New feature is added to make sure Astronomy reach's even to those who are low in budget.So used items related to astronomy section is added in site.

CELESTRON SkyMaster 20x80 porro BINOCULARS

20x magnification porro prism binocular
Giant 80 mm objective lens offers maximum image brightness in low-light and long-range conditions
Ultra sharp focus across the field of view
Multi-Coated optics for sharp, clear views
Suitable for terrestrial or astronomical viewing
Protective rubber covering for ultra-firm grip
Large center focus knob for easy focusing
Integrated tripod adapter rod for ultra-stable tripod mounting
Long eye relief ideal for eyeglass wearers
Soft carrying case included for travel and safe storage
Limited Lifetime Warranty provides best protection and product support on the market

description

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. Each SkyMaster model features 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

Specification

General

Magnification:

20x

Objective Lens Diameter:

80mm (3.15")

Focal Length of Objective Lens:

328.6mm (12.94")

Angular Field of View:

3.7°

Linear Field of View (@1000 yds) / @1000 m):

195 ft (65 m)

Exit Pupil:

4mm (.15")

Eye Relief:

18mm (.71")

Close Focus:

108 ft (33 m)

Interpupillary Distance (max):

72mm (2.83")

Interpupillary Distance (min):

56mm (2.20")

Diopter Adjustment Range:

-4 to +8

Twilight Factor:

Relative Brightness:

Limiting Stellar Magnitude:

Ideal: 12.02 | Moderate: 11.02 | Poor: 10.02

Lens Coatings:

Multi-Coated

Prism Glass (Type):

BaK-4

Prism Coatings:

N/A

Weight:

75 oz (2126 g)

Environmental Protection:

Water Resistant

Nitrogen Filled:

Tripod Adaptable:

Yes

Carrying Case:

Nylon

Dimensions:

228mm x 120mm x 325mm (9.0" x 4.7" x 12.8")

Included Items:

Objective lens caps

Rainguard

Carrying case

Neck strap

Lens cloth

Instruction manual

Solar Warning

Never look directly at the Sun with the naked eye or with this optic. Permanent and irreversible eye damage may result.
Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present