How to Choose a Lower MM Lens for the SmartFinder of Your Meade DS-2000 Series Reflecting Telescope

A telescope’s eyepiece magnifies the light gathered by the optical tube. Each eyepiece has a focal length, expressed in millimeters, or “mm.” The smaller the focal length, the higher the magnification. For example, an eyepiece with a focal length of 9mm has a higher magnification than an eyepiece with a focal length of 25mm. Low power eyepieces offer a wide field of view, bright high-contrast images, and eye relief during long observing sessions. After an object is located and centered in the eyepiece, try switching to a higher power eyepiece to enlarge the image.

Instructions

Difficulty: Easy

1. Locate an object in the sky.
2. Focus on the object either manually or with the Autostar feature.
3. If the object is fuzzy or distorted, try switching to a different lens.

Tips & Warnings

• Viewing conditions vary from night-to-night and from site-to-site. Turbulence in the air, even on an apparently clear night, can distort images. If an image appears fuzzy and ill-defined, return to a lower power eyepiece for a more well-resolved image.
• Never point the telescope directly into the sun.

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