Specifications for this Bushnell telescope include:

• Power/Obj.: 570x60mm
• Style: Refractor
• Focal length: 910mm
• Features: Rotary Power, Easy Track Mount, Compact Adjustable Aluminum Tripod, Barlow, Erecting Lens, Moon Filter, Tracking Controls, Carrying Case, Finderscope

Tech Talk
Magnification (Power): The magnification of a telescope is determined by dividing its focal length by the focal length of the eyepiece being used. For example, a 500mm telescope with a 5mm eyepiece would magnify objects 100x. Thus, a telescope can provide nearly any magnification required depending on the focal length of the eyepiece used.

Objective Lens Size (or Aperture): The size of the telescope’s objective lens, or aperture, limits the amount of power that can be used effectively. As the magnification of an object increases, the brightness of the image decreases. This is because the light gathered by the telescope is being spread over a larger area.

Refractor: An optical system that utilizes a series of glass lenses to refract or bend the light from a distant object such that it can be focused to a point and magnified by an eyepiece. Popularized by Galileo in the 17th Century, it is sometimes referred to as a Galilean refractor.

Focal Length: The measured light path of the optical system (tube length), typically measured in millimeters.

Rotary Power Turret: This patented Bushnell feature allows for magnification and accessory changes to occur through a simple twist of the turret or accessory dial. Accessories are incorporated into the telescope so there are no loose parts, and magnification and accessory changes can be made instantaneously to suit viewing conditions.

Product Description
Voyager telescopes offer impressive optical quality and precise mechanical construction resulting in the clearest view of the most distant objects in the sky. Loaded with innovative features - such as our zoom eyepiece, patented Penta mirror technology and our rotary power turret - ruggedly constructed and convenient to use, there is no better choice when it comes to balancing performance with affordable price.