Telescope Operation Disclaimer : NEVER attempt to view the Sun through any optical instrument that has not been properly fitted with SAFE solar observing appliances . NEVER stare at the Sun with your unaided eyes , unless looking through a known and tested solar filter intended for such use .
COURTESY OF Pedro Ré
Solar images ( Pedro Ré , 2021 )
Imaging the Sun
By PEDRO RÉ
Guest Contributor
Sunlight & the eye ( ICNIRP Guidelines ) The light from the Sun contains radiation energy across the whole electromagnetic spectrum . It generally radiates as a Black Body with energy peaking around 500 nm . Due to the absorption / reflection by the Earth ’ s atmosphere the energy levels vary across the whole spectrum . The human eye is sensitive to solar radiation from 380 nm through to about 780 nm . The maximum daylight sensitivity ( photopic vision ) occurs at 555 nm ( in the green part of the sun ’ s spectrum ). As we age , our sensitivity to shorter wavelengths decreases , and in the adult population less than 1 % of radiation below 340 nm and 2 % of radiation between 340 and 360 nm reaches the retina . Energy in the UV-A , can cause damage to the eye ( as
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