Celestron Ultima 80 - 45° Spotting Scope@rs.8935 or Rs 8042(citibank credit card) at snapdeal

Snapdeal is offering Celestron Ultima 80 - 45° Spotting Scope@rs.8935 or Rs 8042(citibank credit card)

Link- http://www.snapdeal.com/product/celestron-ultima-80-45-spotting/1178688

No coupon required

Features-

Celestron Ultima 80 – 45 degree Spotting Scope offers a step up in aperture from the 65mm, offering 50 percent brighter images. The 80 mm refractor features excellent multi-coated optics packed into a portable and durable refractor design and it comes standard with a 20-60x zoom eyepiece.
The Celestron Ultima 80 – 45 degree Spotting Scope is designed to perform well in a range of viewing situations, making it an all-around optical instrument. It is best for observing nature and long distance spotting and since it is completelywaterproof you can feel comfortable using it in extreme weather as well. The green rubber optical tube allows for subtle observation in any nature environment. This 80 mm Refractor Spotting Scope has sight tube for quick targeting.

It has 80 mm aperture. Aperture (the diameter of the lens or mirror) is the single most significant factor determining the performance of a telescope. The bigger the aperture, the more light your scope gathers and the higher resolution (ability to see fine detail) it has. The clear aperture of a telescope is the diameter of the objective lens or primary mirror, specified in either inches or millimetres. Doubling the aperture means doubling resolution and quadrupling light gathering power. This means that an 8-inch scope can see things that are only one-fourth as bright as the limit of a 4-inch scope and details that are only half as big as the best that the smaller scope can resolve.

The Focal Length is 480 mm. A focal length is the distance from a telescope’s objective element (lens or primary mirror) to the point where rays of light from the objective converge to a focus. It is measured in inches or millimetres. Longer focal lengths will have more capacity for high magnification but thinner fields of view than shorter focal lengths. For example, a telescope with a focal length of 2000mm has twice the power and half the field of view of a 1000mm telescope when using the same eyepiece.

PRICE COMPARISON-

Rs 18450 http://www.dailyobjects.com/celestron-ultima-80-45-degree-spotting-scope

Rs 16260 http://www.naaptol.com/binoculars/celestron-ultima-80mm-45-angled-spotting-scope/p/4360615.html

Rs 14879 http://www.gadgets.in/celestron-ultima-80-45-degree-spotting-scope.html

Rs 16461 http://www.shopclues.com/celestron-ultima-80-straight-binocular.html

Rs 16741 http://www.flipkart.com/celestron-ultima-80-45-degree-spotting-scope/p/itmdhangburyvmsx