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MarsG76

Carina Nebula RGB & HAlpha

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Hello again everyone,

Just sharing my latest DSO imaging result... The Carina Nebula, NGC3372.

The color image is true color RGB, 4 hours worth of ISO400 7.5 minute subs and the mono image is 4 hours of 20 minute ISO400 subs taken through a 7nm Ha filter using a modded Canon 40D.

Thanks for looking.

MG

image.jpeg

image.jpeg

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Yes, I like it!

It immediately made me think to add this one to my list of things to image until I saw your location - damm...

My only minor critical comment is that the colour of the blue stars (I expect them to be blue) over the nebula have turned violet. Looks slightly odd to me but it can probably be easily fixed (in case you agree of course).

 

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Nice image. I would also consider combining the colour with the Ha

9 hours ago, gorann said:

Yes, I like it!

It immediately made me think to add this one to my list of things to image until I saw your location - damm...

 

:happy8:

Didn't you have the chance recently? Btw, we have M81/82 and IFN. Somewhere. :wink:

Edited by wimvb
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On 2/28/2017 at 01:49, symesie04 said:

Very nice, no plans to combine the data?

I was going to combine the data and reprocess the image. I saw that after stacking I had individual pixels on the subs that created lines after stacking, so I need to re do it again but before stacking I'll run a "remove single pixels" filter on every sub.

 

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On 2/28/2017 at 02:37, gorann said:

Yes, I like it!

It immediately made me think to add this one to my list of things to image until I saw your location - damm...

My only minor critical comment is that the colour of the blue stars (I expect them to be blue) over the nebula have turned violet. Looks slightly odd to me but it can probably be easily fixed (in case you agree of course).

 

Hi Goran,

The purple halos seem to be a artifact created by my refractor combined with the full spec modded dslr. If I color balance the purple halos out than the whole nebula component looks too blue. In the past what I did was overlay the image with the purple halos over a color balanced image and use a feathered mask to mask out the purple halos that stood out too much.

I didn't do it in this image since I already decided to reprocess the image from scratch when I get a hour to myself.

 

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9 minutes ago, MarsG76 said:

I was going to combine the data and reprocess the image. I saw that after stacking I had individual pixels on the subs that created lines after stacking, so I need to re do it again but before stacking I'll run a "remove single pixels" filter on every sub.

 

Aka hot pixel filter, aka windsorised sigma rejection, aka cosmetic correction

Good luck

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2 hours ago, wimvb said:

Aka hot pixel filter, aka windsorised sigma rejection, aka cosmetic correction

Good luck

Yeah

 

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Hey Guys... I had to show of that this image made it into the BBC Stargazeing Live 2017 program with Brian Cox. It was on Episode 1.

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