Feature(may vary by option.)
●Optical-purpose Lens Glass D70F700mm Blue Membrane Coating Astronomy Telescope Refractor itself DIY Accessories
●Diameter: 2.8 inches (70 mm), Actual Diameter: 2.8 inches (72
●Focal Length: 300mm, 360mm, 400mm, 500mm, 700mm, 800mm, 900mm
●Dual isolated structural objective lens group, one side blue film, matching spacer
[D70F800mm]
Description
Optical-purpose Lens Glass D70F700mm Blue Membrane Coating Astronomy Telescope Refractor itself DIY Accessories
Diameter: 2.8 inches (70 mm), Actual Diameter: 2.8 inches (72
Focal Length: 300mm, 360mm, 400mm, 500mm, 700mm, 800mm, 900mm
Dual isolated structural objective lens group, one side blue film, matching spacer