TELESCOPES and BINOCULARS USED ON LAND AND SEA Telescopes, Binoculars, Spotting Scopes, Microscopes, Riflescopes, Astronomical Accessories,Refractor,Reflector,Monoculars,Night Vision,Cassegrain,GPS,Optical Tubes,Digital Camera,Eyepiece,Filters,Barlow,Lenses,Diagonals,Prisms,Tripods,Mounts,Finder Scopes,BinoViewers,Optics,Astronomy,Astrophotography,Laser Range Finders,Rangefinders, New
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TELESCOPES & BINOCULARS USED ON LAND AND SEA

  Scope City's Optics Crash Course
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SECTION 1: SCOPE CITY`S GUIDE TO OPTICS

PART I: BASIC APPLICATIONS OF OPTICS

A. TELESCOPES & BINOCULARS FOR DAYTIME USE:

TELESCOPES & BINOCULARS USED ON LAND AND SEA

The most popular optical instruments used for this purpose are binoculars. Magnifying 6 to 12 times, they are relatively unaffected by atmospheric conditions, and they are a very cost-effective way of providing nearly instant access to views of land and sea objects. Some of the better binoculars provide images so clear they seem to "disappear" from the view.

One of the best types of telescopes for this purpose is the small refractor. It can be in a Spotting scope format (marvelous for sharp, contrasty, views of land features, boats, and people watching) or an astronomical refractor telescope format (which can be used on the sky at night as well as daytime objects).

One of the issues for any telescope, when used on land or sea, is that its image is not usually correctly oriented for daytime viewing. The image can be completely upside down and backwards, or just simply reversed left to right. Fortunately, spotting scopes have built-in image correctors, and astronomical refractors can have their images corrected by the simple addition of a correct-image diagonal. Astronomical telescopes composed of mirrors and lenses, usually referred to as compound telescopes, also can all have their images so corrected. Only the classic Newtonian reflectors cannot easily be corrected for use on land. In general, telescopes make powerful tools for daytime viewing on land or sea.

A telescope provides a magnified image of the object being viewed, and the magnification is caused by the interaction of eyepiece and focal length of the scope. Zoom eyepieces provide many different magnifications without changing eyepieces, or one can used fixed-power eyepieces to produce the image. Either way, daytime magnifications are usually confined to under 75 times (75X) because of turbulence in the air itself. When you magnify, you magnify everything - the image and the heat waves and distortion of the atmosphere. Because the sun is constantly heating up the air and the winds blow many different directions near the Earth's surface, any view through a telescope of a land or sea object will be a compromise between the atmosphere and the magnification used. The most pleasing views are usually found at 20X to 30X, with the higher powers reserved for those "just right" conditions.

We can successfully hand-hold an image still up to about 10X or 12X (typically where binoculars leave off). If higher powers are to be used, it will be necessary to use a mount of some sort. Fortunately, some very stable, high-quality, mounts can be had for very affordable prices. Whether using a high-power binocular, spotting scope, or astronomical telescope, the experts at Scope City will steer you to the right combination of products to make your viewing enjoyable.

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LAND, SEA AND NATURE BINOCULARS

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Vanguard fogproof and waterproof Binocular Venture Plus 10x42
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Vanguard waterproof Binocular Spirit Plus 10x42
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Steiner 7 x 50 Commander XP, Water Proof Porro Prism Binocular
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Manuf. No. Steiner 295

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Steiner 7 x 50 Observer C, Water Proof Porro Prism Binocular with 7.02 degree Angle of View, with Compass
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Item No. 409-41040
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Steiner 7 x 50 Marine, Rubber Armored Waterproof and Fogproof Porro Prism Binocular with 6.8 degree Angle of View
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Steiner 10 x 50 Military Marine, Waterproof / Fogproof Porro Prism Binocular
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Steiner 210 Binocular, 10 x 50 Military Marine, Waterproof / Fogproof Porro Prism with 6.23 Degree Angle of View, Green
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Steiner 8 x 56 Nighthunter XP Waterproof and fogproof Roof Prism Binocular with 7.6 Degree Angle of View
Steiner 8 x 56 Nighthunter XP Waterproof and fogproof Roof Prism Binocular with 7.6 Degree Angle of View
Item No. 409-35568
Manuf. No. Steiner 5568

Steiner 5568 Binocular, 8 x 56 Nighthunter XP Waterproof and fogproof Roof Prism with 7.6 Degree Angle of View
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Steiner 10 x 56 Nighthunter XP Waterproof and fogproof Roof Prism Binocular
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Manuf. No. Steiner 5561

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Steiner 10x42mm Night-Hunter XP Roof Prism Hunting Binocular w/ HD Optics
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Steiner 8 x 22 Predator Pro Xtreme Waterproof / Fogproof Roof Prism Binocular with 7.7 Degree Angle of View
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Item No. 409-20060
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Steiner 2341 Binocular, 8 x 22 Predator Pro Xtreme Water Proof Roof Prism with 7.7 Degree Angle of View
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Steiner 12x40 Predator Pro Compact Hunting Binoculars
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