Mounting the scope finder
Loosen fixing screws.
Insert the desired accessory into the eyepiece holder.
Tighten the fixing screw by hand that the accessory is fixed in a
secure way.
Using eyepieces
The magnification range depends on the focal length of the telescope
and the eyepieces. The magnification can be varied by changing the
eyepieces.
Example:
Focal length telecope : Eyepiece focal length = Magnification
300mm : 6mm = 50x
Use an eyepiece with higher focal length (= lower magnification)
when starting an observation.
Using the prism
The prism will be attached to the telescope between the eyepiece
holder and the eyepiece. It allows for an image reversal to an upright
image.
Using Barlow Lens 3X
A Barlow lens is an optical component that is inserted between the
eyepiece and the focuser. Inside it is a minus lens that artificially
extends the focal length of the telescope.
The focal length of the telescope is 300mm, in combination with the
Barlow lens 3X the focal length is extended by a factor of 3.
Focal length: 300mm + Barlow lens 3X corresponds to a focal length
of 900mm.
900mm: 6mm = 150 times magnification.
A Barlow lens is an additional component that contains lenses. Each
lens reflects light and absorbs it additionally in the lens material. This
results in less light reaching the eye. Therefore, you should consider
when a Barlow lens makes sense, e.g. for planetary photography.
Using erection eyepiece 1,5X
this lens can be used either directly in the tube or in combination
with the prism. Note that the magnification factor increases by 1.5
times, e.g. 300mm:20=50 *1.5=75 times magnification.
Viewfinder
Image reversal
