5
4
2. terminology
optical tube
The main body of the telescope, holding the optics.
objective lens
Gathers light and brings it to a focus.
rack and Pinion Focuser
The mechanical holder for the eyepiece, which
allows the eyepiece to be moved in and out to
adjust the focus of the telescope.
Eyepiece
The part into which you look. It has a number of
lenses which magnify and allow your eye to focus
on the image formed by the telescope. Two eyepiec-
es are supplied with the telescope. You can buy
additional eyepieces; eyepieces of different focal
lengths will produce different magnification factors.
Equatorial Mount
The equatorial mount allows for the telescope's
axes of rotation to be adjusted to the user's
latitude. The overall effect is that the observer
can track the heavens along the path of the
Earth’s rotation.
Finder scope
Aids in pointing the telescope. It is a small, low-
power telescope with ”cross hairs“ that attach to
the optical tube. Its wide field of view greatly
reduces the work of finding a faint object in the
main eyepiece of the telescope.
3. Parts list
1
Optical Tube Assembly(OTA)
1
Tripod and Equatorial Head Assembly
2
Slow-Motion Cables
2
RA/DEC Locking Tool
1
Counterweight Bar
1 Counterweight
1
Accessory Tray with knob
2
Tube Mounting Rings
2
Eyepieces: 9mm Kellner
25mm Kellner
1
Star Diagonal 1.25"
1
6x30 Finder Scope with bracket
Orion SkyView
™
90mm
Optical Tube Assembly
Tube Mounting Rings
Eyepiece &
Star Diagonal
Focusing Knob
Slow-Motion
Cables
Latitude
Adjustment
Accessory
Tray
Tripod
Height
Adjustment
Knob
RA & DEC Locking Tool
Counterweight
Counterweight Bar
Equatorial Head
Assembly
Finder Scope
