thousand yards. The apparent field of each eyepiece that Celestron manufactures is found in the Celestron Accessory Catalog
(#93685).
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When working with any optical instrument, there are a few things to remember to ensure you get the best possible image.
•
Never look through window glass. Glass found in household windows is optically imperfect, and as a result, may vary in
thickness from one part of a window to the next. This inconsistency can and will affect the ability to focus your telescope.
In most cases you will not be able to achieve a truly sharp image, while in some cases, you may actually see a double image.
•
Never look across
building rooftops.
•
Hazy skies, fog, and mist can also make it difficult to focus when viewing terrestrially. The amount of detail seen under
these conditions is greatly reduced. Also, when photographing u
little grainier than normal with lower contrast and underexposed.
•
If you wear corrective lenses (specifically glasses), you may want to remove them
attached to the telescope. When using a camera, however, you should always wear corrective lenses to ensure the sharpest
possible focus. If you have astigmatism, corrective lenses must be worn at all times.
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or over objects that are producing heat waves. This includes asphalt parking lots on hot summer days or
nder these conditions, the processed film may come out a
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when observing with an eyepiece