How to Calculate the Magnification of a Sky-Watcher SK MAK Maksutov-Cassegrain Spotting Scope

By eHow Electronics Editor

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You determine the magnification power of a telescope from the focal length of the eyepiece and the focal length of the telescope. The eyepiece in the Sky-Watcher SK MAK series is either 10 mm or 25 mm; the telescope ranges from 1250 to 1500 mm.

Instructions

Difficulty: Easy

Things You’ll Need:

  • Sky-Watcher SK MAK series telescope

Step1
Determine the focal length of the eyepiece; the SK MAK models are equipped with either a 10-mm or a 25-mm eyepiece.
Step2
Find the focal length of the telescope. The SK MAK90 model is 1250 mm, the SK MAK102 is 1300 mm and the SK MAK127 is 1500 mm.
Step3
Divide the focal length of the telescope by the focal length of the eyepiece. For example, if the focal length of the scope is 750 mm and the focal length of the eyepiece is 10 mm, the magnification power is 750/10, or 75. It is usually denoted as 75X.

Tips & Warnings

  • Ideally, the magnification should be 2X per mm of aperture.
  • Do not touch the telescope, especially the lens, if your hands are not clean.

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eHow Article:  How to Calculate the Magnification of a Sky-Watcher SK MAK Maksutov-Cassegrain Spotting Scope

eHow Electronics Editor

eHow Electronics Editor

Category: Electronics

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