Short axis Secondary Mirror, Ultra-high Precision Elliptical Oblique Mirror for DIY Homemade Newtonian Reflection Astronomical Telescope
$42.99
Description
1. Dimension tolerance: ±0.5mm.2. Surface accuracy PV: 1/4-1/6λ.3. Coating: aluminum reflection + protective film.The glass material has different lengths of the short axis, which can be used in Diy's self-made Newtonian reflection astronomical telescope..5.Based on the feedback from my friends, you can shoot the planets
