-40%
D76F900mm Primary mirror + secondary For Astronomical Telescope Mirror Lens
$ 50.16
- Description
- Size Guide
Description
Package include:1PC
(Need a large amount can contact me, the price can be discounted)
(Depending on your choice, only applies to one size)
D76f900 reflecting objective set, the main mirror is spherical,
Caliber 76mm, focal length 900mm,
The secondary mirror is 20 mm short axis elliptical plane, aluminum plated and protective film.
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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