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One thing about dark adaptation, is that one still needs to look up stuff in maps with non GOTO telescopes. For decades I used little red LED flashlights I made myself following instructions in Astronomy magazine. They were fine, I could read everything in Sky Atlas 200o and Herald Bobroff AstroAtlas.
But on the occasions back then that I got together with members at my local club, they were using red flashlights that were about 10 or 20 times brighter than what I was using. I bought an Orion red flashlight, and same story, way too bright. I couldn't see how dark adaptation was possible with them.
I wonder how many other people working solo are using too bright red flashlights?
Regards,
Renato
Last edited by Renato1; 25-07-2014 at 12:22 AM.
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