Celestar Manual
Telescope Basics
23
TELESCOPE BASICS
Once your telescope is fully assembled, you are ready for your first look. This section deals with some of
the basics of telescope operation.
IMAGE ORIENTATION
The image orientation changes depending on how the eyepiece is inserted into the telescope. When using
the star diagonal, the image is right-side-up, but reversed from left-to-right (i.e., reverted). If inserting the
eyepiece directly into the visual back (i.e., without the star diagonal), the image is upside-down and
reversed from left-to-right (i.e., inverted). This is normal for the Schmidt-Cassegrain design. These
orientations apply to the telescope’s finder as well.
Figure 3-1
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