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#1
July 20th 09, 02:33 PM
posted to alt.binaries.pictures.astro
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ASTRO: M51 with DSLR
From my back yard 28 miles south of Washington, DC. Configuration
test of my 6inch TOA150 with flattener at F/7.3 and 80mm guidescope. Four 5 minute exposures with a Hutech modified Canon 5D mark II at 800ASA. Cropped and reduced 50%. 
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#2
July 20th 09, 09:14 PM
posted to alt.binaries.pictures.astro
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ASTRO: M51 with DSLR
Nice picture Robert.
Did you reduce the size because of noise? Looks sharp enough to display it at full size. Stefan "Robert Price" schrieb im Newsbeitrag ... From my back yard 28 miles south of Washington, DC. Configuration test of my 6inch TOA150 with flattener at F/7.3 and 80mm guidescope. Four 5 minute exposures with a Hutech modified Canon 5D mark II at 800ASA. Cropped and reduced 50%.
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#3
July 20th 09, 10:32 PM
posted to alt.binaries.pictures.astro
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ASTRO: M51 with DSLR
Stefan
Yes, the light pollution from the D.C area decessitates more streatching in processing which brings out more noise. Robert On Mon, 20 Jul 2009 22:14:05 +0200, "Stefan Lilge" wrote: Nice picture Robert. Did you reduce the size because of noise? Looks sharp enough to display it at full size. Stefan "Robert Price" schrieb im Newsbeitrag .. . From my back yard 28 miles south of Washington, DC. Configuration test of my 6inch TOA150 with flattener at F/7.3 and 80mm guidescope. Four 5 minute exposures with a Hutech modified Canon 5D mark II at 800ASA. Cropped and reduced 50%.
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#4
July 20th 09, 10:49 PM
posted to alt.binaries.pictures.astro
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ASTRO: M51 with DSLR
Have you tried a program like Neat Image? I've heard good things about
it reducing DSLR noise. They have a crippled demo. I've been thinking of trying it as some of the top CCD imagers seem to swear by it as well but so far haven't found the time. I did try Noise Ninja a few years ago but it wiped out tiny distant galaxies as well apparently seeing them as noise. Rick Robert Price wrote: Stefan Yes, the light pollution from the D.C area decessitates more streatching in processing which brings out more noise. Robert On Mon, 20 Jul 2009 22:14:05 +0200, "Stefan Lilge" wrote: Nice picture Robert. Did you reduce the size because of noise? Looks sharp enough to display it at full size. Stefan "Robert Price" schrieb im Newsbeitrag ... From my back yard 28 miles south of Washington, DC. Configuration test of my 6inch TOA150 with flattener at F/7.3 and 80mm guidescope. Four 5 minute exposures with a Hutech modified Canon 5D mark II at 800ASA. Cropped and reduced 50%.
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