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Photographing the sun
Using a Canon Rebel XT and was wondering if this is difficult? Can I
burn out the sensor if the solar filter doesn't work properly? Are there solar filters one can buy that are reasonably priced? Could one make one? I'm just using the 17-55 mm lens. But I thought if I could blow it up a bit I might get some sunspot detail. And certainly no camera shake as I could shoot at the highest shutter speed available. And should the aperture setting be in the middle for best optical quality? |
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Photographing the sun
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#3
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Photographing the sun
http://thehowzone.com/how/Sun_Photos
OK - I realize I have to have a solar filter. Are they reasonable? Any good place to get them? 58 mm or larger I guess. |
#4
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Photographing the sun
"Rita A Berkowitz" ritaberk2O04 @aol.com wrote in message ... TT wrote: OK - I realize I have to have a solar filter. Are they reasonable? Any good place to get them? 58 mm or larger I guess. We get ours from the Pop-Tart box. The Mylar wrapping is perfect for this task. Start off with two layers and see how that works for you. If you want to spend a few bucks you can get a "Shade 10" welding lens for about Rita Please, please, please do NOT listen to CRAP advice like the above. Sun photography (astronomical or otherwise) is serious and DANGEROUS, both to equipment and to the eye. Check out any amateur astronomy equipment vendors for safe and satisfying solutions. |
#5
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Photographing the sun
OK - I realize I have to have a solar filter. Are they reasonable?
Any good place to get them? 58 mm or larger I guess. We get ours from the Pop-Tart box. The Mylar wrapping is perfect for this task. Start off with two layers and see how that works for you. If you want to spend a few bucks you can get a "Shade 10" welding lens for about $5.00. I would never test it with my eyes but I wonder how many layers would guarantee safety for the 350xt using a 17-55 kit lens? And should I block off the viewfinder? And I wonder if it filters all the suns rays uniformly? This is my biggest worry. I just went downstairs in my apartment building and somebody had left a potato chip bag there - shiny inside. I looked at a bright light and could barely see it. I could start with 4 layers I guess. Too bad its cloudy today. What a neat tip Rita. |
#6
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Photographing the sun
TT wrote:
Using a Canon Rebel XT and was wondering if this is difficult? Can I burn out the sensor if the solar filter doesn't work properly? Are there solar filters one can buy that are reasonably priced? Could one make one? I'm just using the 17-55 mm lens. But I thought if I could blow it up a bit I might get some sunspot detail. And certainly no camera shake as I could shoot at the highest shutter speed available. And should the aperture setting be in the middle for best optical quality? http://www.clarkvision.com/galleries...v1.4-800b.html The full aperture solar filter I use (5-inch diameter) is an Orion telescopes model and cost about $70. Try googling orion solar filters. I think Celestron also has them for a higher price. Roger |
#7
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Photographing the sun
TT wrote:
And I wonder if it filters all the suns rays uniformly? This is my biggest worry. And so you should!! The trap with solar viewing is that it may not be the visible light that damages (although it can, of course) - it's also the IR and UV components. There are substances/methods that will reduce the visible light, but not greatly affect the IR and UV - hence you (or your sensor) may feel safe while you burn...... Welders filter - of grade 12 or greater - does a reasonable job, but unfortunately it usually sucks optically. Take Roger's advice! |
#8
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Photographing the sun
TT wrote: Using a Canon Rebel XT and was wondering if this is difficult? Can I burn out the sensor if the solar filter doesn't work properly? Are there solar filters one can buy that are reasonably priced? Could one make one? I'm just using the 17-55 mm lens. But I thought if I could blow it up a bit I might get some sunspot detail. And certainly no camera shake as I could shoot at the highest shutter speed available. And should the aperture setting be in the middle for best optical quality? Hi, Cokin now do a filter that I think they call the Eclipse Filter, which is designed specifically for photographing the sun. You'll have to check the details, but I seem to remember it's optical density 5, or about 12 stops (please don't flame me if I'm a bit out on these figures - they're something like right). This would give you exposures of around 1/250 at f/8 and ISO100. Your biggest problem is going to be that you'll get a very small image with your lens. It will be less than 1mm on the sensor, so you'll not be able to get a lot of detail. You'd need a 35mm-equivalent of around 2000mm to fill the frame, so you should be looking for at least 400mm for a decent image size. Hope this helps. Mark |
#9
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Photographing the sun
Using a Canon Rebel XT and was wondering if this is difficult? Can I
burn out the sensor if the solar filter doesn't work properly? Are there solar filters one can buy that are reasonably priced? Could one make one? I'm just using the 17-55 mm lens. But I thought if I could blow it up a bit I might get some sunspot detail. And certainly no camera shake as I could shoot at the highest shutter speed available. And should the aperture setting be in the middle for best optical quality? Hi, Cokin now do a filter that I think they call the Eclipse Filter, which is designed specifically for photographing the sun. You'll have to check the details, but I seem to remember it's optical density 5, or about 12 stops (please don't flame me if I'm a bit out on these figures - they're something like right). This would give you exposures of around 1/250 at f/8 and ISO100. Your biggest problem is going to be that you'll get a very small image with your lens. It will be less than 1mm on the sensor, so you'll not be able to get a lot of detail. You'd need a 35mm-equivalent of around 2000mm to fill the frame, so you should be looking for at least 400mm for a decent image size. Hope this helps. Mark I might be picking up a zoom that goes to around 180 mm (film) so that will help. I should get a teleconverter for oddball times like this. Its interesting: because the sun is so bright we assume its much bigger than it is. |
#10
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Photographing the sun
"TT" wrote in message news:nospam-317F40.18174124082006@shawnews... OK - I realize I have to have a solar filter. Are they reasonable? Any good place to get them? 58 mm or larger I guess. We get ours from the Pop-Tart box. The Mylar wrapping is perfect for this task. Start off with two layers and see how that works for you. If you want to spend a few bucks you can get a "Shade 10" welding lens for about $5.00. I would never test it with my eyes but I wonder how many layers would guarantee safety for the 350xt using a 17-55 kit lens? And should I block off the viewfinder? And I wonder if it filters all the suns rays uniformly? This is my biggest worry. I just went downstairs in my apartment building and somebody had left a potato chip bag there - shiny inside. I looked at a bright light and could barely see it. I could start with 4 layers I guess. Too bad its cloudy today. What a neat tip Rita. The sun is pretty small (when viewed from earth), so I'm not sure what you would see, even with a telephoto and the proper filter. I would guess if you really want great photos of the sun you should shoot through a telescope with the "proper" filters. I did take a photo of a total solar eclipse, which is very cool, but your not going to see a corona, or anything like that, without all kinds of special filters, or finding the next solar eclipse and praying for clear skies. |
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