M51 photo (finally)

  • #1
Andy Resnick
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And lo, after 8 days of rain, the night sky did appeareth:

1h_6m_2x.TIF%20RGB-2_zpsx3x9bkzf.jpg


1 hour total integration [email protected] 800/5.6, ISO 2000.
 
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  • #2
Chronos
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Nice shot. What was your optical train?
 
  • #3
Andy Resnick
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Nice shot. What was your optical train?
Just my telephoto lens and Sony a850... am I misinterpreting? Each exposure was 20s long....(?)
 
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russ_watters
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That's an 800mm telephoto lens? Impressive lens! What was it mounted on?
 
  • #5
davenn
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Well Done Andy !

Don't think I can see that one from here in the southern hemisphere .... aahh Stellarium tells me it gets to only a few deg above the horizon :frown: I would be shooting through murky thick atmosphere
I know its a perennial fav for the nthrn hemisphere guys

Im assuming that this was a 100% crop of the original image ( ie. you didn't resize the image out of the camera before cropping)
as M51 wouldn't fill the frame like that with 800mm on a full frame sensor ( nor on a aps-c sensor either for that matter)
and would explain the fuzziness and noise

This thread may be of interest to you astrophotographers ...
http://photography-on-the.net/forum/showthread.php?p=17500235


Dave
 
  • #6
Andy Resnick
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That's an 800mm telephoto lens? Impressive lens! What was it mounted on?
I rewarded myself three years ago with a Losmandy GM8- and have been extremely happy with it. I went from zero experience to 20s exposures in 15 minutes- alignment is trivial.
 
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  • #7
Andy Resnick
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<snip>Im assuming that this was a 100% crop of the original image <snip>
Yep- that's a crop. The full frame shows nearby galaxies NGC 5198, IC 4263, and IC 4282. The image I posted here was made from jpgs, which accounts for most for the quality problems- The RAW version looks much better, not sure why I haven't posted that yet....
 
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  • #8
Andy Resnick
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Had another good viewing night last weekend, was able to sharpen things up a bit. Here's essentially the full-frame (central 2/3, anyway):

1h_24m_raw.TIF%20RGB_zpss1ebt8vi.jpg


It still needs some work, but the nearby low-surface brightness galaxies IC 4263, NGC 5169, and IC 4278 are clearly visible. Here's the 1:1 closeup:

RGB_2_zpssjqfudfx.jpg


Not bad... now it's time to switch over to the Virgo supercluster (weather permitting...)

Edit- slowly getting the hang of this whole 'post processing' thing....
 
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