Table of Contents
Advertisement
I
N
T
R
O
D
U
C
T
I
N
T
R
O
D
U
C
T
Thank you for purchasing this Celestron Refractor Telescope. This telescope is a precision scientific instrument. With it you
will enjoy numerous objects in the sky—planets, nebulae, star clusters, galaxies and other astronomical objects. Your
refractor telescope can also be used as an excellent spotting scope for viewing daytime land objects as well.
Before your journey begins take time to read this manual to familiarize yourself with the operation and parts of your
telescope.
WARNING—NEVER LOOK AT THE SUN WITH YOUR TELESCOPE OR ITS FINDERSCOPE.
PERMANENT AND IRREVERSIBLE EYE DAMAGE MAY RESULT AS WELL AS DAMAGE TO
YOUR TELESCOPE. HOWEVER, YOU MAY ENJOY LOOKING AT THE SUN IF YOU HAVE A SAFE
METHOD OF DOING SO, SUCH AS A CELESTRON SOLAR FILTER.
A
s
s
e
m
b
l
i
n
g
A
s
s
e
m
b
l
i
n
g
1)
Your Firstscope 90AZ telescope should include all of the following:
a.
Tripod with Alt Az mount head
b. Telescope tube with tube rings attached
c.
Two 1 ¼" eyepieces
d. 45˚ erect image diagonal
e.
StarPointer Finderscope
f.
Two slow motion cables
g. Eyepiece accessory tray
2)
To set up the tripod, spread the legs outward until they are fully extended. Extend the center portion of each of
the three tripod legs down 6-8". Use the three tightening screws located at the bottom of each leg to secure the
extended legs in place.
3)
Place the accessory tray on top of tripod's center leg brace. Thread the tray's threaded post into the hole in the
center of the leg brace.
4)
Slide the chrome end of each slow motion control cable onto the Alt Az mount
gear shaft. See Figure A.
5)
Remove the wing nuts from the threaded post at the bottom of the tube rings.
Place the telescope tube on top of the Alt Az mount so that the threaded posts
slide through the holes on the mount. The slow motion cables should extend
towards the focuser end of the telescope tube. Replace the wing nut and tighten
to hold the telescope in place.
6)
Remove the plastic cap covering the end of the focuser. Loosen the set screw
on the focuser so that it does not obstruct the inner diameter of the focuser.
Insert the chrome barrel of the star diagonal into the focuser and tighten the set
screw.
7)
Loosen the set screw on the diagonal so that it does not obstruct the inner diameter of the barrel. Insert the
chrome barrel of the 20mm eyepiece into the diagonal and tighten the set screw. See Figure B
8)
Locate the StarPointer finderscope. Remove the knurled nuts on the threaded posts at the focuser end of the
telescope tube. Mount the Star Pointer bracket by placing the bracket over the posts protruding from the tube
I
O
N
I
O
N
Y
o
u
r
T
e
l
e
s
c
Y
o
u
r
T
e
l
e
s
c
o
p
e
o
p
e
3
Figure A
Advertisement
Table of Contents
