DIY Astronomical Refracting Telescope Dia. 93mm Double Objective Lens Group 2pcs
Specification
Lens actual size: 93mm,
Coating: Four-sided multilayer green film
Combined image quality: 1/4-1/8
Diameter tolerance: +0/-0.12 mm
Center thickness tolerance: ±0.2mm
Focal length tolerance: ±0.1%
Finish: 60/40
Eccentricity: 1'
Package includes: 2pcs 93mm objective lens for refracting telescope.
Return or Exchange