National Geographic Underwater Metal Detector

National Geographic Underwater Metal DetectorFeatures Waterproof up to 32 ft LED light and strong pulse vibration for metal detection Uncover coins, jewelry and precious metals on land or underwater Lightweight Automatic sensitivity Description Discover both buried and sunken treasures with the versatile National Geographic Underwater Metal Detector. Whether you are a snorkeler, beachcomber or avid explorer, this lightweight metal detector that is waterproof to a depth of 32 feet would make a

Focal Length 9mm

retracted legs 26

Focal Length 640mm focal length

Narrowband Image by Josh Balsam

If too much precipitation then falls

The unit also has an ice alert function and shows a special large snowflake icon at the top of the forecast display if the temperature falls between 37°F to 28°F (3°C to -2°C)

Lighting Incident and Transmitted

For recording lunar eclipses over a long period of time

The binocular has a 30mm aperture that brings in lots of light so observers can see more and 4x magnification that really makes viewers feel close to the action

Focal Length 640

Another modification is the use of helical couplers on each axis ($175 value on each axis) to provide more reliable operation and higher performance by connecting the worm and motor more securely in the RA and DEC axes

Full-size tripod includes an accessory tray to keep eyepieces handy and provide additional stability