Celestron cometron binocular 7x50 feature large 50mm objective lenses multi coated optics and a large exit pupil for incredible light gathering capabilities that showcase comets stars the craters of the moon and even dim nebulae in crisp clarity with high contrast the cometron 7x50 wide field of view lets you explore expansive swaths of the sky to quickly pinpoint exactly the object you want to see and keeps it in your sights without the need for constant movement and readjustment c