Meade Tripod LX600-ACF 14 inch User Manual - Page 19

Choosing an Eyepiece

Page 19 highlights

Getting Started Connection" port on the back of the StarLock unit, and the six-pin into the "StarLock" port on the fork arm. 11. Attach the DEC jumper cable. LX600 features split fork arms. In order to make electric connection between the two portions you must install the jumper cables on the left and right sides. . 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 Series 4000 26mm Super field of view with high Plössl eyepiece image resolution. Low power eyepieces offer a wide field of view, bright, highcontrast 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 LX600 ACF models. The focal length of the 14" f/8 LX600 ACF is 2845mm (see Specifications, pages 49 and 50). Eyepiece Power = Telescope focal length ÷ Eyepiece focal length Eyepiece Power = 2845mm ÷ 26mm Eyepiece Power = 109 The eyepiece power, or magnification is therefore 109x. Note: For a list of magnification ratings of the eyepieces Too Much Power? Can you ever have too much power? If the type of power you're referring to is eyepiece magnification, yes, you can! The most common mistake of the beginning observer is to "overpower" a telescope by using high magnifications which the telescope's aperture and atmospheric conditions cannot reasonably support. Keep in mind that a smaller, but bright and well-resolved image is far superior to one that is larger, but dim and poorly resolved. Powers above 400X should be employed only under the steadiest atmospheric conditions. Jupiter; examples of the right amount of magnification (left) and too much magnification (right). AutoStar II can calculate the best eyepiece for you to use. Try out the "Eyepiece Calc" feature in the Utilities menu. Most observers should have three or four additional eyepieces to achieve the full range of reasonable magnifications possible with the LX600 ACF telescopes. See OPTIONAL ACCESSORIES, page 44. available for the LX600 ACF telescopes, see OPTIONAL ACCESSORIES, page 44. Note: Seeing conditions vary widely from night-to-night and site-to-site. Turbulence in the air, even on an apparently clear night, can distort images. If an image appears fuzzy and ill-defined, back off to a lower power eyepiece for a more well-resolved image (see above example of Jupiter). 19

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Connection” port on the back of the StarLock
unit, and the six-pin into the “StarLock” port
on the fork arm.
11. Attach the DEC jumper cable.
LX600 features
split fork arms. In order to make electric
connection between the two portions you must
install the jumper cables on the left and right
sides. .
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 LX600 ACF
models. The focal length of the 14" f/8 LX600 ACF is 2845mm
(
see Specifications, pages 49 and 50
).
Eyepiece Power = Telescope focal length ÷ Eyepiece focal length
Eyepiece Power = 2845mm ÷ 26mm
Eyepiece Power = 109
The eyepiece power, or magnification is therefore 109x.
Note: For a list of magnification ratings of the eyepieces
Series 4000 26mm Super
Plössl eyepiece
available for the LX600 ACF telescopes, see OPTIONAL
ACCESSORIES, page 44.
Note: Seeing conditions vary widely from night-to-night and
site-to-site. Turbulence in the air, even on an apparently
clear night, can distort images. If an image appears fuzzy
and ill-defined, back off to a lower power eyepiece for a
more well-resolved image (see above example of Jupiter).
19
Getting Started
Too Much Power?
Can you ever have too much power? If the
type of power you’re referring to is eyepiece
magnification, yes, you can! The most
common mistake of the beginning observer
is to “overpower” a telescope by using high
magnifications which the telescope’s aperture
and atmospheric conditions cannot reasonably
support. Keep in mind that a smaller, but bright
and well-resolved image is far superior to one
that is larger, but dim and poorly resolved.
Powers above 400X should be employed only
under the steadiest atmospheric conditions.
AutoStar II can calculate the best eyepiece for
you to use. Try out the “Eyepiece Calc” feature in
the Utilities menu.
Most observers should have three or four
additional eyepieces to achieve the full range
of reasonable magnifications possible with
the LX600 ACF telescopes.
See OPTIONAL
ACCESSORIES, page 44.
Jupiter; examples of the right amount of magnification
(left) and too much magnification (right).