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Archive 2013 · The Sun in monochrome Hydrogen Alpha
  
 
astrodave
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p.1 #1 · p.1 #1 · The Sun in monochrome Hydrogen Alpha


A little different black and white image than most. This is the Sun imaged with a monochrome industrial camera (Point Grey Chameleon) through a Hydrogen Alpha solar telescope.

It is about 1000 frames stacked together to get better / sharper surface detail.

Thanks for looking!










Mar 18, 2013 at 11:45 PM
DonT
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p.1 #2 · p.1 #2 · The Sun in monochrome Hydrogen Alpha


WOW that's amazing


Mar 18, 2013 at 11:48 PM
Kenj8246
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p.1 #3 · p.1 #3 · The Sun in monochrome Hydrogen Alpha


+1

Kenny



Mar 19, 2013 at 01:02 AM
tomandmarj
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p.1 #4 · p.1 #4 · The Sun in monochrome Hydrogen Alpha


nah, it's your old golf ball . . . .
lots of technology there.
regards, tom



Mar 19, 2013 at 02:10 AM
gregfountain
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p.1 #5 · p.1 #5 · The Sun in monochrome Hydrogen Alpha


That's awesome! Thanks for sharing. I don't think I've ever seen a shot of the sun's surface...
G



Mar 19, 2013 at 02:18 AM
astrodave
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p.1 #6 · p.1 #6 · The Sun in monochrome Hydrogen Alpha


tomandmarj wrote:
nah, it's your old golf ball . . . .
lots of technology there.
regards, tom


Actually its an old tennis ball my dog got ahold of...

Thanks guys!



Mar 19, 2013 at 03:00 AM
gregfountain
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p.1 #7 · p.1 #7 · The Sun in monochrome Hydrogen Alpha


astrodave wrote:
Actually its an old tennis ball my dog got ahold of...

Thanks guys!


You fooled me, I thought you were serious!




Mar 19, 2013 at 05:53 AM
astrodave
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p.1 #8 · p.1 #8 · The Sun in monochrome Hydrogen Alpha


gregfountain wrote:
You fooled me, I thought you were serious!



Seriously, it actually is the Sun. Here's a higher magnification shot (from a different day) of the surface detail magnetic disturbances:








Mar 19, 2013 at 10:05 AM
 

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gregfountain
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p.1 #9 · p.1 #9 · The Sun in monochrome Hydrogen Alpha


...I was just playing along....very cool shot!


astrodave wrote:
Seriously, it actually is the Sun. Here's a higher magnification shot (from a different day) of the surface detail magnetic disturbances:

http://lh4.googleusercontent.com/-qiJxEcNbyjo/TiOW08HlVzI/AAAAAAAAA88/YU7-r1CmBeM/s800/surface-2011-07-17.jpg




Mar 19, 2013 at 12:14 PM
Mitchell Derr
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p.1 #10 · p.1 #10 · The Sun in monochrome Hydrogen Alpha


Amazing!


Mar 19, 2013 at 02:27 PM
Dougo
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p.1 #11 · p.1 #11 · The Sun in monochrome Hydrogen Alpha


Mitchell Derr wrote:
Amazing!


I agree.

Cheers Ray



Mar 19, 2013 at 10:31 PM
a.RodriguezPix
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p.1 #12 · p.1 #12 · The Sun in monochrome Hydrogen Alpha


God, That is hard to input!



http://www.astronomyforum.net/astrophotography-forum/142482-sunday-july-29th-lots-photos.html



Mar 21, 2013 at 09:41 AM
CDaescher
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p.1 #13 · p.1 #13 · The Sun in monochrome Hydrogen Alpha


Amazing images, nature and technology.
Chris




Mar 21, 2013 at 08:54 PM
kwoodard
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p.1 #14 · p.1 #14 · The Sun in monochrome Hydrogen Alpha


Most impressive! How did you stack 1000 images and not have your computer melt?


Mar 21, 2013 at 09:53 PM
astrodave
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p.1 #15 · p.1 #15 · The Sun in monochrome Hydrogen Alpha


Thanks folks! The camera used is actually a monochrome video camera that takes pictures at about 20fps. A freeware program called Registax evaluates and aligns each image and does some fancy pixel math when stacking them to get the sharpest image possible. Most of that process is fairly automatic.

The reason that a video camera is used is to combat thermal turbulence effects in the atmosphere ("seeing") that cause the view/image of the sun to ripple like its underwater. At a high frame-rate, the camera can capture those brief instants of clarity (when the air is stable) in individual frames over several thousand frames.

If I remember correctly for this image, I actually captured 2000 frames and used about half of them. Only about 3/4 of the Sun's disc actually fits on my sensor at this focal length, so I have to take about 2000 frames of the North hemisphere, and 2000 frames of the South, stack them, then stitch together to get the final image.

Like I said, its not the typical B&W image on this forum, so I hope it was OK to post here. I've been shooting some B&W film lately of more traditional, terrestrial subjects, so I hope to post some of those soon.

-David



Mar 22, 2013 at 04:55 PM





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