SWA 20mm Telescope eyepieces:Super wide angle,high index glasses,Fully broadband multi-coating.

SWA 20mm Telescope eyepieces: 

 

Prod. Code :BGWA20

Focal Length(mm) :20

Lens Structure(#Element/#Groups) :5/4

Apparent Field of view :70°

Eye Relief(mm) :16

Barrel(in) 11/4

Field stop(mm):25.0

 

FEATURES of SWA 20mm Telescope eyepieces:

Super wide angle 70 degrees, high index glasses. Super sharp, high contrast & excellent aberration correction, extremely high resolution. Fold-down rubber eyecups, filter threads, blackened lens edges, anti-reflection threads for maximum contrast, upper barrels are black anodized aluminum with a rubber grip ring.   Fully broadband multi-coating.