Newtonian Reflector Telescope DIY Dedicated Secondary Mirror Elliptical for DIY Newtonian Reflecting Astronomical Telescope
$59.99
Description
Astronomical Telescope Reflective Telescope Secondary Mirror.The mirror is a spherical mirror with aluminized surface and a protective film to prevent scratches on the main mirror under light touch..Dimension tolerance: ±0.5mm.Surface accuracy PV: 1/4-1/6λ.Purpose: used as a Newtonian astronomical telescope optical axis steering
