M83 alternate processed image

[Rod771 (Rod)]

Looks awesome Greg! Love the colours.

[gregbradley]

Originally Posted by Rod771

Looks awesome Greg! Love the colours.

Thanks Rod.

Greg.

[allan gould]

After seeing all the suggestions in processing I think your final image has everything squared away to give a really clean image. I would be more than happy to approach such data.
Been busy for a month in China and just managing to troll through the 2500+ images from the EM5 before printing them in two volumes - so that's my excuse for not catching up on your latest image.
Looking really good, Greg.
Allan

[gregbradley]

Originally Posted by allan gould

After seeing all the suggestions in processing I think your final image has everything squared away to give a really clean image. I would be more than happy to approach such data.
Been busy for a month in China and just managing to troll through the 2500+ images from the EM5 before printing them in two volumes - so that's my excuse for not catching up on your latest image.
Looking really good, Greg.
Allan

Thanks Allan. The various suggestions are helpful as I sometimes miss these things when processing that othes pick up.

Greg.

[gregbradley]

I've been studying more on image processing and applied some of it to this image and got this alternate image of my recent M83. It holds up better under zooming in.

http://upload.pbase.com/gregbradley/...56547980/large

http://upload.pbase.com/gregbradley/...47980/original

The original version is here:

http://www.pbase.com/gregbradley/image/156443727/large

http://www.pbase.com/gregbradley/ima...43727/original

Which do you prefer?

Greg.

[RickS (Rick)]

Yes, I like the new version much better, Greg.

[cometcatcher (Kevin)]

Is there less data in the new one? Although it seems more natural, there is more noise and some of the fainter stars disappear.

[alpal]

It's beautiful Greg.
I like how you weren't afraid to leave a bit of red noise in the background.
That way everyone can see where the noise level is & makes the pic super honest.
Also - it's not over sharpened.

Well done

Allan

[gregbradley]

Originally Posted by cometcatcher

Is there less data in the new one? Although it seems more natural, there is more noise and some of the fainter stars disappear.

Exactly the same data just processed differently. I can check for the noise levels I thought I had reduced them enough but perhaps not. I see there is still some red noise in the background. I have reduced it without affecting the galaxy. Still a small amount must be background noise from the Ha layer early on. Minimal now.

Fainter stars are still there is just less contrast compared to the original in that regard so it appears to me they stand out less.

Originally Posted by RickS

Yes, I like the new version much better, Greg.

Cheers Rick.

Originally Posted by alpal

It's beautiful Greg.
I like how you weren't afraid to leave a bit of red noise in the background.
That way everyone can see where the noise level is & makes the pic super honest.
Also - it's not over sharpened.

Well done

Allan

Thanks Allan. Sharpening is a trick in these astro images. Its easily overdone.

Greg.

[allan gould]

Another excellent repro, Greg. I prefer the latest version as it appears just slightly less pushed in the processing than the last.
It's difficult to asses sometimes as good data can give many different versions and it really comes down to either personal tast or pixel peeping.
Allan

[gregbradley]

Originally Posted by allan gould

Another excellent repro, Greg. I prefer the latest version as it appears just slightly less pushed in the processing than the last.
It's difficult to asses sometimes as good data can give many different versions and it really comes down to either personal tast or pixel peeping.
Allan

Thanks Allan for your feedback. I agree there seems to be different ways of presenting the data.

Greg.

[Shiraz (Ray)]

well that was an interesting journey. The final image is a ripper - beautiful colour and remarkable detail.

[gregbradley]

Originally Posted by Shiraz

well that was an interesting journey. The final image is a ripper - beautiful colour and remarkable detail.

Thanks Ray. Processing an image seems to be an evolving refinement of technique. Learning new ones that work better than old ones. So it was here.

Greg.

[DJT (David)]

Hi Greg

That rework holds up really well. It's a great image.

[gregbradley]

Originally Posted by DJT

Hi Greg

That rework holds up really well. It's a great image.

Thanks very much David.

Greg.

[multiweb (Marc)]

I thought the original was average in details but the repro is superb. Love the Ha regions and faint brown dust extending into the outer spiral arms. Lovely colors too. Wow factor. To the cool wall.

[gregbradley]

Originally Posted by multiweb

I thought the original was average in details but the repro is superb. Love the Ha regions and faint brown dust extending into the outer spiral arms. Lovely colors too. Wow factor. To the cool wall.

Thanks Marc. I haven't had a good run with M83 images in the past so I am happy with this result.

Greg.