Solar   Eclipse   Eye   Safety:    Watching   a  solar   eclipse   is   a  memorable   experience,   but   looking   directly   at   the   sun   can   seriously  damage   your   eyes.   Staring   at   the   sun   for   even   a  short   time   without   wearing   the   right   eye  protection   can   damage   your retina permanently.   It   can   even   cause   blindness,   called   solar  retinopathy.    There   is   only   one   safe   way   to   look  directly  at   the   sun,   whether   during   an   eclipse   or   not:   through  special­purpose  solar   filters .  These   solar   filters   are   used   in   “eclipse   glasses”   or   in   hand­held  solar   viewers.   They   must   meet   a  very   specific   worldwide   standard   known   as   ISO   12312­2.  Keep   in   mind   that  ordinary   sunglasses,   even   very   dark   ones,   or   homemade   filters   are   not  safe   for   looking   at   the   sun .    Steps   to   follow   for   safely   watching   a  solar   eclipse:  ● Carefully   look   at   your   solar   filter   or   eclipse   glasses   before   using   them.   If   you   see   any  scratches   or   damage,   do   not   use   them.  ● Always   read   and   follow   all   directions   that   come   with   the   solar   filter   or   eclipse   glasses.  Help   children   to   be   sure   they   use   handheld   solar   viewers   and   eclipse   glasses   correctly.  ● Before   looking   up   at   the   bright   sun,   stand   still   and   cover   your   eyes   with   your   eclipse  glasses   or   solar   viewer.   After   glancing   at   the   sun,   turn   away   and   remove   your   filter—do  not   remove   it   while   looking   at   the   sun.  ● The   only   time   that   you   can   look   at   the   sun   without   a  solar   viewer   is   during   a  total   eclipse.  When   the   moon   completely   covers   the   sun’s   bright   face   and   it   suddenly   gets   dark,   you  can   remove   your   solar   filter   to   watch   this   unique   experience.   Then,   as   soon   as   the   bright  sun   begins   to   reappear   very   slightly,   immediately   use   your   solar   viewer   again   to   watch  the   remaining   partial   phase   of   the   eclipse.  ● Never   look   at   the   uneclipsed   or   partially   eclipsed   sun   through   an   unfiltered   camera,  telescope,   binoculars   or   other   similar   devices.   This   is   important   even   if   you   are   wearing  eclipse   glasses   or   holding   a  solar   viewer   at   the   same   time.   The   intense   solar   rays   coming  through   these   devices   will   damage   the   solar   filter   and   your   eyes.  ● Talk   with   an   expert   astronomer   if   you   want   to   use   a  special   solar   filter   with   a  camera,   a  telescope,   binoculars   or   any   other   optical   device.    Information   provided   by   American   Astronomical   Society  https://www.aao.org/eye­health/tips­prevention/solar­eclipse­eye­safety 

   

 

Solar Eclipse Eye Safety .pdf

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