Offer valid until 3rd June 2012 or while stocks last
Buy this product and receive the following: Discover the Night Sky book
The NexStar 4SE is the first in our range of computerised telescopes. It uses the patented SkyAlign system to show you the best features of the night sky particular to your time and location, all at the touch of a button! It’s simple to use, and easy to carry to your favourite viewing location. Its stand-out feature is the built-in wedge – a must have for the serious astrophotography enthusiast! The wedge will effectively cancel out the apparent motion of the stars across the night sky, helping you to create the perfect image with your own digital SLR camera. The NexStar 4SE is the perfect telescope for the novice or advance astronomy fans.
What will I be able to see with the NexStar 4SE?
General Features:
Computerized mount features:
GLOSSARY OF TERMS Maksutov-Cassegrain: a type of telescope that combines both lenses and curved mirrors to collect and focus light . Aperture: the size of the main mirror that collects light. Focal length: the distance between the centre of the mirror and the point of it being focused by the eyepiece – the higher the focal length, the greater the magnification. Focal ratio: focal length divided by aperture. Magnification: a calculation of the focal length of the telescope over the focal length of the eyepiece. Eyepiece: a removable lens that is used to look through a telescope. The focal length of the eyepiece is used to determine the magnification. An eyepiece with a long focal length (for example, 32mm) will give you lower magnification; an eyepiece with a short focal length (4mm) will give you higher magnification Alt-azimuth mount: a mount that allows movement in altitude (up and down) and azimuth (side to side). Optical coating: a thin layer of material on an optical component such as a lens or mirror which alters the way in which light is reflected or transmitted. Finderscope: a low-power scope attached parallel to the main telescope, which provides easy telescope aiming. Highest useful magnification: the highest visual power a telescope can achieve before the image becomes too dim for useful observing. Lowest useful magnification: the lowest power usable from a dark sky observing site. An eyepiece with still lower power has an exit pupil (the beam of light coming out of the eyepiece) larger than the pupil of your eye. Limiting stellar magnitude: the faintest star you can see with a telescope (under excellent seeing conditions). The limiting magnitude is directly related to aperture, where larger apertures allow you to see fainter stars. Angular field of view: the extent of the observable world that is seen at any given moment. The angular field of view is that viewed by the instrument in square degrees. Linear field of view: a ratio of lengths and refers to the area that can be observed at 1,000 yards. Photographic resolution: how close dark and light lines can be to each other and still be visibly differentiated. Secondary mirror obstruction: a secondary mirror is required to send the light from the main mirror to the correct position for viewing. This mirror and its holder obstruct some of the light entering the telescope. Slew speeds: the speed that the controller moves the telescope. Speeds are calculated to accomplish specific functions. Tracking rates: in addition to the Earth’s rotation, the computed tracking rates take many additional factors into account such as the Earth’s orbit around the Sun, the Moon’s orbit around the Earth, and an object’s position relative to the horizon. Wedge: Used with Alt-Az mounts to help counteract the apparent movement of stars across the sky when doing astrophotography, to avoid the stars showing as streaks of light as they rotate around the celestial pole.
Reviewed by Kathryn, AG Cairns on 29/08/11
I love this telescope! I love how easy it is to use. It's definitely a telescope for the whole family. My 11 year old son can set it up and we see so many amazing sights from detailed craters on our moon to the rings of Saturn! And if you love this product why don't you upgrade to the 8SE telescope for double the viewing capabilities! Kathryn from AG Cairns
I would recommend this to a friend!
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