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ABOUT MAGNIFICATION
The magnification of a telescope indicates how much an image is
enlarged or how big and close it appears to the viewer. The focal length
of the eyepiece combined with the focal length of the telescope
determine the magnification. To calculate the magnification of your
telescope with any particular eyepiece, simply divide the focal length of
the telescope (500mm) by the focal length of the eyepiece (indicated in
‘mm’ on the eyepiece collar).
The erecting eyepiece used for viewing terrestrial objects and
landscapes has a focal length of 12 mm, providing a magnification of
41X.
The two eyepieces included
provide the following
magnification:
eyepiece 8.3mm = 60.24X
eyepiece 16.6mm = 30.12X
USING THE IMAGE ERECTOR
For viewing terrestrial
(land-based objects),
remove the diagonal
mirror from the focus
tube by unscrewing
the thumbscrew and
pulling out as shown.
Fit the image erector to the end of the focus tube and secure with the
thumbscrew.
500mm focal length tube = 30.12 X magnification
16.6mm focal length eyepiece
EXAMPLE
5. For greater magnification,
release the thumbscrew
securing the 16.6 mm
eyepiece, remove and
replace with the 8.3 mm
eyepiece.
4. Fit the eyepieces like this:
We suggest you fit the 16.6mm eyepiece first.
The 16.6 and 8.3mm
eyepieces fit like this.
The erecting eyepiece fits
like this.
