The Oceana Series from Celestron features waterproof models for marine use. Choose from three feature-rich models - whether you want center focus, traditional individual focus, or a model with a compass and reticle. All are rubber covered to protect against rough handling. All provide maximum optical performance with BAK-4 prisms and multi-coatings for sharp images with high contrast and resolution. Each model has a large, 50mm objective lens to offer maximum image brightness even in low light conditions, like dusk and dawn.
Backlit
illuminated
liquid
dampened
magnetic
compass
-
excellent
navigational
tool
for
land
or
sea
Horizontal and vertical etched reticle to help determine relative size of objects
Rangefinding dial calculates actual object distance or size
Completely waterproof - dry nitrogen charged and sealed with internal O-rings to prevent internal fogging - unaffected by climate and temperature changes
Individual eyepiece focus with diopter scale for quick and accurate focusing
Excellent depth of field for minimal focus adjustments