Наведение телескопа
Slowly rotate the focus knobs under the focuser one way or the
other until the image in the eyepiece is sharp. The image
usually has to be finely refocused over time, due to small
variations caused by temperature changes, flexures, etc. This
often happens with short focal ratio telescopes, particularly
when they haven't yet reached outside temperature. Refocusing
is almost always necessary when you change an eyepiece, add
or remove a Barlow lens.
To attach a camera to your telescope you may need an adapter to get the camera focused. Some
refractors are designed to be used with diagonal mirrors and thus need a longer focal length
when used with camera.
To achieve that, simply attach an extender to the focuser of your telescope and then attach the
camera with a T-adapter to the extender.
Camera adapter
The magnification produced by a telescope is determined by the focal length of the eyepiece
that is used with it. To determine a magnification for your telescope, divide its focal length by
the focal length of the eyepieces you are going to use. For example, a 10 mm eyepiece will give
80x magnification with an 800 mm telescope.
Choosing the appropriate eyepiece
Extender
T
-
adapter
Camera
Focuser
Eyepiece
holder
Focusing
