I should have added that I used my prescription sunglasses with the pinhole. Cutting the glare helps immensely. Darin, try a pinhole, you'll be amazed at how things sharpen-up. What it does is effectively increase the f-ratio of your eyeball. Works in daylight as well.
From: "Darin Christensen" <darinc@comcast.net> My vision is too fuzzy.....
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Chuck, re. pinholes: When I was a junior high kid in Florida about 1960, I had to take a hideous TV history class, with what seemed like 350 other kids stuck in a huge auditorium. I had bad vision and no glasses. Anyway, to watch the TV screen from my distant seat, I would curl my index finger tightly, holding it in place with my thumb, and peer through the hole. In effect, I shut down the f/stop and increased the depth of field, bringing the picture into a better focus. It was uncomfortable and tiring and I missed a lot of what went on. Anyway, maybe that's part of what you did with the pinhole, improve focus, besides cutting down on the glare. Thanks so much for these reports. When I got home from work last night (earlier than usual for a Sunday night because I had to begin my coverage early), I tried to get a shot of the moon-Mars combo you told us about. I used a telephoto and tried different exposures. Even at 1600 ISO, it was a long exposure to get Mars to show up at all. That meant it moved around a bit. I lay flat on my back on the driveway and propped an elbow on the cement for stability, and I did get one photo that isn't awful. I stepped up exposures, checking to see when I could detect Mars. The first one that worked had the moon overexposed, since Mars is so much dimmer from this part of the solar system. I may post it in my gallery tomorrow, along with a moon picture or two. Best wishes, Joe
thats with the pinhole.... must be time for new glasses. I think if I made the pinhole small enough to focus, a light photon would not pass through it...... ----- Original Message ----- From: "Chuck Hards" <chuckhards@yahoo.com> To: <utah-astronomy@mailman.xmission.com> Sent: Monday, February 06, 2006 10:45 AM Subject: [Utah-astronomy] Re: Venus
I should have added that I used my prescription sunglasses with the pinhole. Cutting the glare helps immensely. Darin, try a pinhole, you'll be amazed at how things sharpen-up. What it does is effectively increase the f-ratio of your eyeball. Works in daylight as well.
From: "Darin Christensen" <darinc@comcast.net> My vision is too fuzzy.....
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participants (3)
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Chuck Hards -
Darin Christensen -
Joe Bauman