Eagle Nebula Ha and Oiii data for processing

[STEVE333]

I recently captured a little data on the Eagle and Omega nebulae in a WFOV image. The data was collected with a DSLR and a Duo-Narrowband filter.

The R-channel contains the Ha data. The Oiii data is the sum of the G- and B-channels.

I invite anyone to download the two files below (Ha and Oiii stacked and calibrated files) and use them to create an NB image. Feel free to post your results.

If anyone is able to produce an image with the blue interior of the Eagle, please let me know how you did it.

https://www.dropbox.com/s/4ayvff6ztadvyc4/Ha.tif?dl=0
https://www.dropbox.com/s/1v4grbck5qwshwp/Oiii.tif?dl=0

I have processed the data using several different approaches, but, have not been able to bring out the beautiful blue in the center of the Eagle nebula that many others have produced.

Thanks in advance for any efforts you put into this request.

Steve

[depratnt]

I recently captured a little data on the Eagle and Omega nebulae in a WFOV image. The data was collected with a DSLR and a Duo-Narrowband filter.

The R-channel contains the Ha data. The Oiii data is the sum of the G- and B-channels.

I invite anyone to download the two files below (Ha and Oiii stacked and calibrated files) and use them to create an NB image. Feel free to post your results.

If anyone is able to produce an image with the blue interior of the Eagle, please let me know how you did it.

https://www.dropbox.com/s/4ayvff6ztadvyc4/Ha.tif?dl=0
https://www.dropbox.com/s/1v4grbck5qwshwp/Oiii.tif?dl=0

I have processed the data using several different approaches, but, have not been able to bring out the beautiful blue in the center of the Eagle nebula that many others have produced.

Thanks in advance for any efforts you put into this request.

Steve

So my process:

1: stretch images as desired
2: Make range mask for each image and highlight the bright areas only.
3: apply masks to images and increase brightness of highlighted areas
4: Pixel math - Red: as HA, Blue: as Oiii, Green: as (HA*.4)+(Oiii*~.4)
5: Color correct, saturation, levels, noise reductions, star reduction.

Image:

Please feel free to message me with any questions. Id be happy to take you through a more detailed tutorial

[STEVE333]

I recently captured a little data on the Eagle and Omega nebulae in a WFOV image. The data was collected with a DSLR and a Duo-Narrowband filter.

The R-channel contains the Ha data. The Oiii data is the sum of the G- and B-channels.

I invite anyone to download the two files below (Ha and Oiii stacked and calibrated files) and use them to create an NB image. Feel free to post your results.

If anyone is able to produce an image with the blue interior of the Eagle, please let me know how you did it.

https://www.dropbox.com/s/4ayvff6ztadvyc4/Ha.tif?dl=0
https://www.dropbox.com/s/1v4grbck5qwshwp/Oiii.tif?dl=0

I have processed the data using several different approaches, but, have not been able to bring out the beautiful blue in the center of the Eagle nebula that many others have produced.

Thanks in advance for any efforts you put into this request.

Steve

So my process:

1: stretch images as desired
2: Make range mask for each image and highlight the bright areas only.
3: apply masks to images and increase brightness of highlighted areas
4: Pixel math - Red: as HA, Blue: as Oiii, Green: as (HA*.4)+(Oiii*~.4)
5: Color correct, saturation, levels, noise reductions, star reduction.

Image: Quick eagle and omega astronomyforum.jpg

Please feel free to message me with any questions. Id be happy to take you through a more detailed tutorial

That's fantastic!! Thank you so much for sharing this with me. That's exactly what I wanted to achieve.

I'm still unclear as to which "images" are which in your explanation, so I will PM you.

Thank you so much for taking the time to share this information with me.

Steve

[Graeme1858]

Steve

Thanks for the data. I had a go at it but failed to work out how to get Gimp to import your Ha and Oiii as anything other than grey scale!

It was fun to play with though. Astrobackyard (Trevor) did a similar thing with the Cocoon Nebular (C19) recently, I had similar results!

For what it's worth, here's mine:

Regards

Graeme

[STEVE333]

Hi Graeme - Thanks for giving it a try.

The Ha and Oiii images are grayscale. The colors don't appear until these images are mapped/combined into the RGB channels to form a color image. In PixInsight I did this using PixelMath. I'm sure that Photoshop (or Gimp) must have a way to do that also.

Steve

[Graeme1858]

I had another go just for the craic! It's still not going to win any awards but I now know a lot more about using layers in Gimp. All I have to do now is remember how I did it!

Regards

Graeme