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Solar Prominence 2-18-2008-B
Same AVI used to make this image, but with a great deal more post-processing. The "A" image was processed automatically by Registax (v4) using a single alignment point.
This "B" version used 4 alignment points, a smaller alignment box (half the orginal size), a second alignment using a new reference frame created from 50% of the original stacked aligned and stack frames, and elimination of the worst 50% of the frames from the subsequent new stack.
Wavelet processing settings formed a ( curve with 25 at top and bottom, 12.5 at second highest and lowest levels, and 6.4 at the two center levels.
After R4 processing, I used a slight contrast enhancement and an S-curve rebalancing after conversion to gray-scale. Clipping due to S-curve processing was moderate.
Original auto-processed version is here:
farm3.static.flickr.com/2186/2275378010_2314f19e2a_o.jpg
This one made it to Spaceweather.com:
spaceweather.com/submissions/large_image_popup.php?image_...
Be sure to check the others there from the past two days. Some of them are pretty incredible, and most were made with 40mm to 50mm solar telescopes. I especially like Eva's from Sunday (holey, Moley!). See them via links on the home page for Feb. 18th, 2008:
Solar Prominence 2-18-2008-B
Same AVI used to make this image, but with a great deal more post-processing. The "A" image was processed automatically by Registax (v4) using a single alignment point.
This "B" version used 4 alignment points, a smaller alignment box (half the orginal size), a second alignment using a new reference frame created from 50% of the original stacked aligned and stack frames, and elimination of the worst 50% of the frames from the subsequent new stack.
Wavelet processing settings formed a ( curve with 25 at top and bottom, 12.5 at second highest and lowest levels, and 6.4 at the two center levels.
After R4 processing, I used a slight contrast enhancement and an S-curve rebalancing after conversion to gray-scale. Clipping due to S-curve processing was moderate.
Original auto-processed version is here:
farm3.static.flickr.com/2186/2275378010_2314f19e2a_o.jpg
This one made it to Spaceweather.com:
spaceweather.com/submissions/large_image_popup.php?image_...
Be sure to check the others there from the past two days. Some of them are pretty incredible, and most were made with 40mm to 50mm solar telescopes. I especially like Eva's from Sunday (holey, Moley!). See them via links on the home page for Feb. 18th, 2008: