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Owner's of the Celestron Telescope 52291 gave it a score of 0 out of 5. Here's how the scores stacked up:
To use your C5 spotting scope visually:
1. Find a distant object that is fairly bright.
2. Insert a low power eyepiece (one with a long focal length — 25 to
30mm) into the spotting scope.
3. Adjust the tripod until the C5 is pointed in the direction of the object
you selected.
4. Locate the object in your finder.
5. Move the C5 until the object is centered in the finder.
6. Look through the main optics and the object will be there (if you aligned
the finder first).
Once you have found the object, you will most likely need to focus. If the object
is moving, leave the adjustment clamps loose so that you can pan easily. Try
using different optional eyepieces to see how the field changes with various
magnifications.
You can change the power of your Celestron C5 spotting scope just by changing
the eyepiece (ocular). To determine the magnification of your Celestron C5,
simply divide the focal length of the spotting scope by the focal length of the
eyepiece used. In equation format, the formula looks like this:
Focal Length of Spotting Scope (mm)
Magnification = ————————————————
Focal Length of Eyepiece (mm)
Let’s say, for example, that you are using a 26mm eyepiece. To determine the
magnification, you simply divide the focal length of your C5 (1250mm) by the
focal length of the eyepiece (26mm). Dividing 1250 by 26 yields a magnification
of 48 power.
Although the power is variable, each instrument — under average skies — has a
limit to the highest useful magnification. The general rule is that 60 power can
be used for every inch of aperture. For example, the C5 is 5" in diameter.
Multiplying 5 by 60 gives a maximum useful magnification of 300 power.
Although this is the maximum useful magnification, most observing is done
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