Pentax ETH-310 Manual do Utilizador descarregar pdf (Página 32)

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])

Horizontal graduation

(double)

Vertical graduation

(single)

Vertical graduation

(double)

Optical axis

Reticule pattern

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 47 48

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Pentax ETH-310 Manual do Utilizador Página 32