In a haze of Hydrogen, M57 Ultra deep field showing it's layers of extended shell and background. Imaged with Pier 3, Exposure times were 2hrs in RGB all 60s subs, 6hrs of OIII, 180s subs, and 23and a half hrs of H-alpha all 180s subs.
Its worth zooming in to see the layers in the shell, I was quite surprised at the colour pallet that the OIII and Ha gave. Trying to pull out core detail in this is generally difficult on M57 due to its apparent size even more so on such wide field so rather than just do the ring itself I set out to see if there was any background H-alpha....
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Contact: pete@ccdimaging.co.uk
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Peter Shah
Roboscopes Observatory Controller
Hi Peter,
A surprisingly lot of hydrogen indeed, which until an exceptionally excited colleague of yours told me about much earlier, I never knew was there. For such a small nebula that close up you included is extremely well detailed too. You definitely succeed in extracting every photon you can from the data.
It will be interesting to see the results from pier 1 and compare the amount of hydrogen that it was able to capture. Then maybe one of the Syndicate members might take up Steve's suggestion to make a further submission.
Thanks for sharing,
Ray
Ray
Roboscopes Guinea Pig
Thanks Ray,
Yes Steve and I often discuss objects and then occasionally indulging in a big project like this.....Its something most would not justify investing the time on. Personally I thought it was a good investment.
Its definitely a processing challenge but with careful calibration the background Hydrogen just manifests itself. What actually was most surprising to me was the colour tones in the shell from the mix of Ha and OIII showing delicate yellows with a slight hint of blue. The range of brightness from the Ring to the background is massive and needs to be built in stages then assembled....Including calibration I spent just less than 15hours processing it.
Visit my personal imaging website at astropix.co.uk
For Image Processing Tutorials
Contact: pete@ccdimaging.co.uk
We can supply your new high quality Newtonian or Dall Kirkham Astrograph
Peter Shah
Roboscopes Observatory Controller
Hi Peter,
A surprisingly lot of hydrogen indeed, which until an exceptionally excited colleague of yours told me about much earlier, I never knew was there. For such a small nebula that close up you included is extremely well detailed too. You definitely succeed in extracting every photon you can from the data.
It will be interesting to see the results from pier 1 and compare the amount of hydrogen that it was able to capture. Then maybe one of the Syndicate members might take up Steve's suggestion to make a further submission.
Thanks for sharing,
Ray
Pray tell, who may this "excited colleague" be...... :) :)
Please ignore my dylexia wherever possible, just be thankful I can control my Tourettes ;)
Things to do, so little time!
Steve
Roboscopes Tea Boy
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