Orion OBSERVER 70MM AZ - Manual (Page 5)

1
optical tube
This is the main optical component of the telescope. The
glass lens at the front of the tube gathers incoming
light and focuses it by bending (or refracting) the light
rays. The tube assembly has several parts built into it,
which are shown and discussed in detail in the next
section.
2
90° Mirror star diagonal
The diagonal contains a mirror that reflects the light gath-
ered through the optical tube to the eyepiece. The diag-
onal is angled to allow for viewing objects that are high
in the sky from a comfortable position.
3
25mm Explorer ii eyepiece
The eyepiece is the part of the telescope that you actually
look through to see things. The focal length of the eye-
piece and the telescope determines the magnifying
power of the telescope. Magnification is discussed in
more detail in the Using Your Telescope section.
4
EZ Finder ii reflex sight
This is a special “finder” that helps you aim the telescope
and locate objects in the sky for viewing. The EZ Finder
II generates a red LED “dot” that shows where your
telescope is aimed. The use of the EZ Finder II is dis-
cussed in the Getting Started section.
5
altazimuth yoke mount
The mount couples the telescope to the tripod and allows
you to move the optical tube easily both up and down
and right and left.
6
tripod legs
These aluminum tripod legs support the telescope and
can extend from 27" to 50" long.
7
accessory tray
This tray is a convenient place for holding extra eyepieces
and other small pieces of equipment.
5
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3. the Basic components of Your telescope
Figure 1 shows the fully assembled Observer 70. All the major components of the telescope are described and numbered to
help you identify each part and understand its use. Refer back to this figure when assembling the telescope.