Celestron PowerSeeker 70 70mm f/10 AZ Refractor Telescope User Manual
Page 10
10
I
I
n
n
s
s
t
t
a
a
l
l
l
l
i
i
n
n
g
g
t
t
h
h
e
e
F
F
i
i
n
n
d
d
e
e
r
r
s
s
c
c
o
o
p
p
e
e
To install the finderscope:
1.
Locate the finderscope (it will be mounted inside the finderscope
bracket) – see Figures 1-1 and 1-2.
2.
Remove the knurled nuts on the threaded posts on the optical tube –
see Figure 2-22.
3.
Mount the finderscope bracket by placing it over the posts protruding
from the optical tube and then holding it in place thread on the
knurled nuts and tighten them down – note that the finderscope
should be oriented so that the larger diameter lens is facing toward
the front of the optical tube.
4.
Remove the lens caps from both ends of the finderscope.
A
A
l
l
i
i
g
g
n
n
i
i
n
n
g
g
t
t
h
h
e
e
F
F
i
i
n
n
d
d
e
e
r
r
s
s
c
c
o
o
p
p
e
e
Use the following steps to align the finderscope:
1.
Locate a distant daytime object and center it in a low power (20mm) eyepiece in the main telescope.
2.
Look through the finderscope (the eyepiece end of the finderscope) and take notice of the position of the
same object.
3.
Without moving the main telescope, turn the adjustment thumb screws located around the finderscope
bracket until the crosshairs of the finderscope are centered on the object chosen with the main telescope.
Figure 2-22a Finderscope with Bracket
I
I
n
n
s
s
t
t
a
a
l
l
l
l
i
i
n
n
g
g
a
a
n
n
d
d
U
U
s
s
i
i
n
n
g
g
t
t
h
h
e
e
B
B
a
a
r
r
l
l
o
o
w
w
L
L
e
e
n
n
s
s
Your telescope also comes with a 3x Barlow Lens which triples the
magnifying power of each eyepiece. However, the greatly magnified
images should only be used under ideal conditions – see the “Calculating
Magnification” section of this manual.
Figure 2-23
To use the Barlow lens with refractors, remove the diagonal and insert the Barlow directly into the focuser tube.
You then insert an eyepiece into the Barlow lens for viewing. You can also, insert the diagonal into the Barlow lens
and then use an eyepiece in the diagonal but you may not be able to reach focus with all eyepieces.
For Newtonian telescopes, insert the Barlow directly into the focuser. Then, insert an eyepiece into the Barlow lens.
Note
: Start by using a low power eyepiece as it will be easier to focus.
3x Barlow Lens Magnification
60EQ
70EQ
80EQ
114EQ
127EQ
w/20mm
Eyepiece 135x
105x 135x 135x 150x
w/4mm
Eyepiece 675x
525x 675x 675x 450x
Objective Lens
Finderscope Bracket
Eyepiece
Adjustment Screws
Figure 2-22