Vixen | Producer of optics from astronomical telescopes and binoculars
Optical tubes are a part composing an astronomical telescope, and you look through the optical tubes to view celestial objects. Point the objective lens on the optical tube to your target celestial object and magnify the celestial object using an eyepiece on the opposite side of the optical tube. You will need an alt-azimuth or equatorial mount to look through the telescope optical tube.
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