Optional accessories, Choosing eyepieces – Meade Instruments 6" LS-6 ACF User Manual
Page 16

Meade makes a complete line of accessories to enable
you to get the most fun and performance from your LS-
6 telescope. No matter what you want to accomplish,
we have the equipment to help you get there.
Choosing Eyepieces
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. Experienced users know that higher
powers are, in general, not as useful as lower powers.
Many of the objects in the night sky are relatively large
and faint and look best at low magnifications.
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. To calculate magnification,
divide the telescope’s focal length by the eyepiece’s
focal length. For example, a 26mm eyepiece is
supplied with the LS-6. The focal length of the 6" LS-6
is 1524mm (see SPECIFICATIONS, page 40).
Telescope Focal Length 1524mm
Eyepiece Focal Length 26mm
1524 ÷ 26 = 58.6x
The magnification is therefore 58.6x.
Low power eyepieces offer a wider field of view, bright,
high-contrast images, and long eye relief. To find an
object with a telescope, always start with a lower power
eyepiece such as the Super Plössl 26mm or longer
focal length. 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 or, for many
objects, the view is best with a high quality low-power
wide-field eyepiece.
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, reduce to a lower
power eyepiece.
Your telescope comes supplied with a Super Plössl
Series 4000 Super Plössl Eyepieces
56.0mm
SP 2"
52º
27x
1º 55'
40.0mm
SP
44º
38x
1º 9'
32.0mm
SP
52º
48x
1º 6'
26.0mm
SP
52º
59x
53'
20.0mm
SP
52º
76x
41'
15.0mm
SP
52º
102x
31'
12.4mm
SP
52º
123x
25'
9.7mm
SP
52º
157x
20'
6.4mm
SP
52º
238x
13'
Focal
Apparent
Actual
Length
Type
Field
Power
Field
OPTIONAL ACCESSORIES
26mm eyepiece, which gives a wide 53 ARC Minute
(just a little less than 1 degree) field of view with 59x
magnification. This is a very good all purpose eyepiece
for your telescope, but you should consider buying
additional eyepieces in longer and shorter focal lengths
to fully realize the potential of the excellent 6" optical
system in your LS-6 telescope.
The Series 4000 Super Plössl Eyepieces are excellent
well corrected 4 element optics at popular prices. They
come in a wide range of focal lengths to give you the
right magnification for any type of celestial object you
are viewing. You can also use one of the Series 4000
Barlows to double or triple the magnification of a Super
Plössl eyepiece. These eyepieces have been the
standard for over 30 years.
OPTIONAL
ACCESSORIES
1