Specifications for this Bushnell telescope include:

• Power/Obj.: 675x4.5"
• Style: Reflector
• Focal length: 900mm
• Features: 20,000 Object Onboard Starfinding Computer With Real Voice Output, Kinematic Motion, Quick-Release Adjustable Aluminum Tripod, 1.25" Format Eyepieces, Barlow Lens, Red Dot LED Finderscope, Accessory Tray, Camera Adaptable, 2-Step Assembly

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.

Reflector: The optical system in a reflector uses a primary mirror to reflect the light from a distant object such that it can be focused to a point and magnified by an eyepiece. Popularized by Sir Isaac Newton in the 17th Century, it is sometimes referred to as a Newtonian reflector.

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

"Go To" Computerized Star Locator: Utilizes an on-board computer to find over 20,000 astronomical objects. Educational descriptions of the objects are provided at the touch of a button. Plus "go to" advanced motorized technology, where the computer automatically finds and follows any object from its 20,000 object database.

Product Description

Bushnell NorthStar Goto 100mm Maksutov-Cassegrain Co - 78-8840 Our NorthStar telescopes offer amateur astronomers state-of-the-art computer-driven location and tracking capability with simple, push-button control. With a built-in data base of 20,000 celestial objects, you simply call up your target on the hand-held control module, enter a simple "Go To" command and the NorthStar computer does the rest. Once locked on, tracking the object for prolonged viewing is automatic. Our innovative RVO (Real Voice Output) feature provides a fun, interactive way to explore the night sky. The remote, hand-held control module features red, backlit push buttons and a red, illuminated LCD read-out for easy viewing without impairing your night vision. The telescopes also feature our new 1x wide-angle, red dot finderscope. Additional features include a quick-release tripod and accessory tray for fast, easy assembly. 4mm and 25mm eyepieces Erect image diagonal mirror for land viewing "Go To" computerized tracking technology Red Dot LED finderscope Remote hand-held control module Camera adaptable Quick release tripod Kinematic mount Accessory tray

Part Number: 788840