Pentax ETH-305 Switch User Manual


 
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4.5 Eyepiece adjustment
After [4.4 Centering with the optical plummet] completed,focus the
telescope eyepiece on the telescope reticule.
Remove the telescope lens cap.
Point the telescope at a bright object.
Rotate the eyepiece completely counterclockwise.
Look through the eyepiece,and rotate the eyepiece clockwise until the
reticule appears at its maximum sharpness.
At procedure ,keep your eye relaxed to prevent parallax and eye
fatigue.Parallax causes problems with object sighting.
(Refer to [4.6 Object sighting])
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Horizontal graduation
(double)
Vertical graduation
(single)
Vertical graduation
(double)
Optical axis
Reticule pattern
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