welding the heavens
June 5, 2012 2:16 PM Subscribe
Transit of Venus - the welding mask edition.
posted by Bohemia Mountain to science & nature (3 answers total)
So, in about an hour, the transit of Venus will begin here on the west coast. I have a welding mask that auto-darkens to #13. Advice has been to use a welder's mask rated at #14. I have had no luck in locating a mask or goggles rated at #14. Can anyone give viewing advice on #13 vs. #14? I'm not planning on using something unsafe to view this event, but advice would be appreciated on best practice with a a #13 lens.