LUNT Solar Systems Binoculars are designed specifically to study the Sun. Their optics is protected with special filters that do not transmit ultraviolet and infrared radiation which is hazardous for your eyes. Only safe light reaches the observer’s eyes. That is why you can observe solar eclipses and transits of plants against the solar disk through LUNT binoculars. The optics features will also suffice to study sunspots. You can’t use LUNT binoculars for classic surveillance.
LUNT Solar Systems