D203F800 Primary Mirror+Secondary Mirror Mirror Set For Astronomical Telescope For Sale
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D203F800 Primary Mirror+Secondary Mirror Mirror Set For Astronomical Telescope: $119
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Condition: New & High Quality
Focal length: 750mm
D203 F800 reflective objective, spherical mirror, aluminized and protective film, is a good choice for diy telescope enthusiasts
How to use ?
Cleaning the mirror surface:
First blow off the dust that can be blown off with a blown balloon, then use a good quality absorbent cotton to dip the alcohol and gently wipe the mirror. After drying, look at the light source from the side to see if there is some cotton or Keep the water stains on top, and if necessary, gently wipe them with some good quality mirror cloth (be careful, otherwise it will affect your telescope).
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On Sep-14-20 at 23:35:13 PDT, seller added the following information: