Celestron 11065, 91525, 11055 instruction manual L E S C O P E B a S I C S, Image Orientation

T E L E S C O P E B A S I C S

Image Orientation

Once your telescope is fully assembled, you are ready for your first look. This section deals with some of the basics of telescope operation.

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 and applies to the telescope’s finder as well.

Figure 3-1

These simplified drawings of the planet Jupiter illustrate the different image orienta- tions obtained when using various viewing configurations.

22 • Telescope Basics