User`s guide

18
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A telescope is an instrument that collects and focuses light. The nature of
the optical design determines how the light is focused. Some telescopes,
ǡǤǡƪǡ
use mirrors. The EdgeHD optical system (Aplanatic Schmidt) uses a
combination of mirrors and lenses and is referred to as a compound or
ǤơǦ
while maintaining very short tube lengths, making them extremely
portable. The EdgeHD system consists of a zero power corrector plate, a
ǡƤ
ƪƫǤ
optical system, they travel the length of the optical tube three times.
Ȃ
enhanced multi-layer coatings on the primary and secondary mirrors
ƪƤ
ǦƪǤ
ǡ
Ǥƫǡ
light from passing through to the eyepiece or camera.
ĈĚęĆĜĆĞěĎĊĜĔċęčĊđĎČčęĕĆęčĔċęčĊĉČĊĔĕęĎĈĆđ
͝ǧ͙
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The CPC’s focusing mechanism controls the primary mirror which is
ƫǤ
The focusing knob, which moves the primary mirror, is on the rear cell
Ǥ
Ǥǡ
reached the end of its travel on the focusing mechanism. Turn the knob in
Ǥǡ

Ǥ
primary mirror only slightly. Therefore, it will take many turns (about 30)
ȋ͘͞ȌƤǤ
ǡơǡ
ƥǤǡ
you can go right through focus without seeing the image. To avoid this
ǡƤȋ
Moon or a planet) so that the image is visible even when out of focus.
Critical focusing is best accomplished when the focusing knob is turned
Ǥ
ǡǤǡ
visually and photographically, this is done by turning the focus knob
counterclockwise.
͝ǧ͚
ĈęĚĆđĎĒĆČĊĔėĎĊēęĆęĎĔēĆĘĘĊĊē
ĜĎęčęčĊĚēĆĎĉĊĉĊĞĊ
ĊěĊėĘĊĉċėĔĒđĊċęęĔėĎČčęǡĆĘ
ěĎĊĜĊĉĜĎęčĆęĆėĎĆČĔēĆđ
ēěĊėęĊĉĎĒĆČĊǡĆĘěĎĊĜĊĉĜĎęč
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ĎēęĊđĊĘĈĔĕĊ
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The image orientation changes depending on how the eyepiece is
inserted into the telescope. When using the star diagonal, the image is
right-side-up, but reversed from left-to-right (i.e., mirror image).
ȋǤǤǡ
star diagonal), the image is upside-down and reversed from left-to-right
(i.e., inverted). This is normal for the Schmidt-Cassegrain design.
čĊĊĒćđĊĒĔēęčĊĊēĉ
ĔċęčĊċĔĈĚĘĐēĔćĘčĔĜĘ
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