Thanks Bill, Mike and Dr. Nick – though my intentions were not to display this image as a master piece, but I’ll acknowledge your compliments anyway.
Quote:
Originally Posted by avandonk
Here is an initial try.
Digital Development of fits files
Pixel math green x 0.66
Richardson Lucy on each colour fit 3X3 for ten cycles
Recombine with IP to colour tiff
Adjust in PS for levels and crop to get rid of black bits
Convert 16 bit tiff to LDR image with EasyHDR
Adjust levels in PS
Another cycle of RL as before
Convert to JPG 3.6MB
Thanks Jase I will keep playing with the data.
Bert
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Good stuff Bert. I find it interesting how you individually worked on each channel before combining them. I typically find it easier to combine the data before manipulating it primarily because if a routine changes the brightness of a channel more than the other channels, you’ve lost your colour weightings (sure you can get them back, but it easier to prevent).
Why did you increase the pixel values on the green channel with pixel math? The KAI-11000 chip is rather green sensitive so you it needs to be compensated by boosting up the other channel weights. Was this specifically done to provide more information for the deconvolution process?
How did you find the LDR process working with 16-bit data? In your opinion, are there greater benefits over 12-bit for this process considering the increase in dynamic range? The star centers aren’t white, but a subtle pink hue, was this caused by LDR process or incorrect colour weightings do you think?
Quote:
Originally Posted by ballaratdragons
Jase, here is the best I could get it. It was hard converting them from Black & White to colour before I added them together!
Not real good is it  |
Ken, your colours are nearly non-existent. What happened? If you want the quick and dirty way of doing things and you’re only using photoshop, open up the R channel, the convert the image to RGB. Then select the channels tab. Copy and paste the G, B images in to the G, B channels. This is a rather crude and nasty way of doing things (in my opinion) as it not always easy to get colour balance right. It’s all experience mate. Have a couple more goes if you’re having fun.
Quote:
Originally Posted by marc4darkskies
Nice image Jase!
OK, I'll give it a go - I need the practice! Besides, not much else to do this Sunday arvo.
The following shows the same cropped area in your and my version. Stars are a bit smaller, but I dropped some colour depth. I didn't try to increase the star sizes in the cluster - that might make the image more appealing. I highlighted the darker areas a bit 'cause I like that.
http://www.pbase.com/gailmarc/temp |
Looking good there Marcus. Well done. Emphasising the dark areas does enhance the image.
Don't hold back everyone, get in there and have a go.
There is not right or wrong - just have fun.
