Heloawei Astronomical Telescope Accessories Main Mirror D114F900mm with Short-Axis Secondary Mirror 25mm, for Newton Reflector Spherical Mirror

Description

• 114mm caliber, 900mm Focal length
• Contains a primary lens with an objective lens diameter of 114mm and a focal length of 900mm, and a secondary mirror with a short axis (short side diameter) of 25mm length. This is the core component of a set of mirrors.
• Uses: used in astronomical telescope accessories
• Features: The main mirror is a spherical mirror with aluminized surface and a protective film to prevent scratches on the main mirror under light touch. The workmanship is excellent.
• Package Include :1Pcs

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).

Package includes:1PC D203F750 Primary mirror;1PC secondary Mirror

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