“I had a telescope over 20 years ago. It was listed at 100 Power - images 100 times larger. I noticed that the power specification is not listed on this or other telescopes. What is the power of this telescope?”
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The NexStar 4SE's highest useful magnification under ideal seeing conditions is 241x. The rule of thumb is you multiply the aperture 4.02" x 60 = 241x. The supplied 25mm eyepiece will provide 53x (1325mm focal focal length divided by 25mm eyepiece focal length).
Sorry, there was a problem. Please try again later.ok the simple answer to your question is looking at aperture size. so this telescope has 102mm aperture size. you would normally take the aperture of 102 and double it to 204mm. so with this information you know this is the highest magnification you should go. this telescope has a focal length of 1325mm and it comes with a 25mm eyepiece. so out of the box 1325mm/25mm =53x magnification and the same can be said if you take 1325mm/10mm eyepiece = 132.5x magnification.
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