• Locating Objects with Red Dot Finder Scope
Now with the finder scope aligned with the telescope, you can center your desired object in the
finder scope with little effort and then observe it in the eyepiece of the telescope.
Focusing the Telescope
Step 1: Loosen the focus
locking knob.
Step 2: Rotate the focus knob
on either side of the telescope
until the object becomes clear
in the eyepiece.
Step 3: Tighten the focus
locking knob to make sure the
focus doesn't slip.
Telescope Basics
A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as
its objective to form an image (also referred to as a dioptric telescope). They focus the light and
make distant objects appear brighter, clearer, and magnified. Most refracting telescopes use two
main lenses. The largest lens is called the objective lens, and the smaller lens used for viewing is
called the eyepiece lens.
When a wave such as light passes from one medium to another at an angle it changes direction.
This is called refraction. A lens is a piece of glass designed to bend the light that passes through it
in such a way that an image may be produced.
A refracting telescope uses a combination of lenses to produce an image of a distant object, e.g.
a star or planet. Basically, the objective lens produces an image of a distant object at its focus and
the eyepiece lens magnifies this image. We can represent this using a ray diagram which shows
the path of imaginary rays of light passing through the telescope.
What is Refractor Telescope
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