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XW
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Focal length
The smaller the focal length of an eyepiece, the higher the magnification when used with a telescope.
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Apparent field of view
This is the angle of aperture of an eyepiece.
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Eye relief
Is the distance between the eyepiece and eye, within which the entire eyepiece field of view can still be seen. Longer eye reliefs are recommended for relaxed observing.
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Connection (to the telescope)
Specifies the product's connection or connection thread on the telescope connection end. The same adapter dimension must always be available on the telescope.
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Pentax
Eyepiece SMC XW40-R 40mm 2"
$ 540.00
ready for shipping in
1-2 weeks
