StarshotJohn@lemmy.world to pics@lemmy.world · 1 year agoDusk Aviatorlemmy.worldimagemessage-square16fedilinkarrow-up1577arrow-down11
arrow-up1576arrow-down1imageDusk Aviatorlemmy.worldStarshotJohn@lemmy.world to pics@lemmy.world · 1 year agomessage-square16fedilink
minus-squareintensely_human@lemm.eelinkfedilinkarrow-up9arrow-down1·1 year agoSame reason that L-shaped army flashlight has a red lens you can affix to it. You can read documents or look at a map with red light then still have your eyes’ night vision when you turn the light off.
minus-squareandrew_bidlaw@sh.itjust.workslinkfedilinkarrow-up5·1 year agoSightings of space phenomena like showering stars disallow non-red lights for that reason too. The night sky is slow to open.
Same reason that L-shaped army flashlight has a red lens you can affix to it. You can read documents or look at a map with red light then still have your eyes’ night vision when you turn the light off.
Sightings of space phenomena like showering stars disallow non-red lights for that reason too. The night sky is slow to open.