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顕微鏡 Celestron FirstScope 21024のPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。Celestron FirstScope 21024 16 ページ。 Firstscope

Aligning the Secondary Mirror

If you have an eyepiece in the focuser, remove it. Rack the focuser tube in completely, using the focusing knobs,

until its silver tube is no longer visible. You will be looking through the focuser at a reflection of your eye in the

secondary mirror superimposed on the primary mirror (Figure 6-2). If the primary mirror is not centered in the

secondary mirror, adjust the secondary mirror screws by alternately tightening and loosening them until the mirror is

centered.

Even though the star pattern appears the same on both sides of focus, they are asymmetric. The

dark obstruction is skewed off to the left side of the diffraction pattern indicating poor

collimation.

Both mirrors aligned with your eye looking into the focuser.

Figure 6-2

Figure 6-3