National Geographic 80-30114, Инструкция по эксплуатации

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Light
Light
Secondary Mirror
Primary Mirror
(Objective)
Focuser
Focuser
Light
Light
Objective Lens
Light
Light
Secondary Mirror
Primary Mirror (Objective)
Correcting Lens
Reflector
(Newtonian)
Refractor
Catadioptric
(Maksutov-Cassegrain/
Schmidt-Cassegrain)
Light
Light
Secondary Mirror
Primary Mirror
(Objective)
Focuser
Focuser
Light
Light
Objective Lens
Light
Light
Secondary Mirror
Primary Mirror (Objective)
Correcting Lens
Reflector
(Newtonian)
Refractor
Catadioptric
(Maksutov-Cassegrain/
Schmidt-Cassegrain)
Light
Light
Secondary Mirror
Primary Mirror
(Objective)
Focuser
Focuser
Light
Light
Objective Lens
Light
Light
Secondary Mirror
Primary Mirror (Objective)
Correcting Lens
Reflector
(Newtonian)
Refractor
Catadioptric
(Maksutov-Cassegrain/
Schmidt-Cassegrain)
Reflector
A reflector telescope uses mirrors to gather and focus light. Light enters the telescope through its open front end and
travels to the concave primary mirror at the back. From there the light is reflected back up the tube to a flat secondary
mirror, which sits at a 45° angle in relation to the eyepiece. Light bounces off of this secondary mirror and out through
the eyepiece. A reflector telescope is designed for astronomical use. Terrestrial objects may appear inverted, sideways
or at an angle depending on how your tube is oriented due to optical design. This rotation is perfectly normal on all
Newtonian reflectors and will not affect astronomical viewing.
Refractor:
A refracting telescope uses a collection of lenses to gather and focus light. A refractor’s views will be upside down if
a diagonal is not in use. A standard diagonal will generate a “right side up” image, however, it will rotate the image on
the vertical axis (mirror image). To get the “right side up” image without the rotation, you will need to use a special
diagonal with an erect image prism.
Catadioptric:
A catadioptric telescope uses a combination of mirrors and lenses to gather and focus light. Popular catadioptric
designs include the Maksutov-Cassegrain and Schmidt-Cassegrain.
Types Of Telescopes: