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Meade LX200-ACF Manual

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Choosing an Eyepiece
A telescope’s eyepiece magnifies the image formed by the telescope’s main optics.
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 26mm.
Your telescope comes supplied with a 26mm
Plössl
eyepiece which gives a wide,
comfortable field of view with high image resolution.
Low power eyepieces offer a wide field of view, bright, high-contrast images, and eye
relief during long observing sessions. To find an object with a telescope, always start
with a lower power eyepiece such as the 26mm Plössl. When the object is located and
centered in the eyepiece, you may wish to switch to a higher power eyepiece to
enlarge the image as much as practical for prevailing seeing conditions. For
information about optional eyepieces for the your telescope, see
OPTIONAL
ACCESSORIES, page 44.
The power, or magnification of a telescope is determined by the focal length of the
telescope and the focal length of the eyepiece being used (an eyepiece’s focal length
is printed on the side of the eyepiece). To calculate eyepiece power, divide the
telescope’s focal length by the eyepiece’s focal length.
For example
: A 26mm eyepiece
is supplied with
LX200-ACF models. The focal length of the 8" f/10 LX200-ACF is
2000mm (see
SPECIFICATIONS, pages 50 through 52).
Eyepiece Power = Telescope focal length ÷ Eyepiece focal length
Eyepiece Power = 2000mm ÷ 26mm
Eyepiece Power = 77
The eyepiece power, or magnification is therefore 77x.
Note: For a list of magnification ratings of the eyepieces available for the
LX200-ACF
telescopes, see
OPTIONAL ACCESSORIES
, page 44.
- 15 -
Series 4000 26mm Super Plössl
Eyepiece
Series 5000 26mm Plössl Eyepiece
(Standard on 16” LX200-ACF)
Note:
The microfocuser is
shipped with the
microfocuser adapter (B)
threaded to the SC
accessory adapter (L).
Unthread the adapters
from each other before
attaching the microfocuser.
… 15 …


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