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Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing

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mmalik
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Reged: 01/13/12

Loc: USA
NGC 7023 - Iris Nebula [Up Close]
      #5544986 - 11/29/12 05:22 AM Attachment (111 downloads)

NGC 7023 (Caldwell 4) - Iris Nebula [Up Close]. Sep 9, 2012

The Iris Nebula is a bright reflection nebula in the constellation Cepheus. It lies 1,300 light-years away and is six light-years across [Wikipedia]. NGC 7023 lies in a region of the Milky Way darkened by dust, within which the nebula is embedded. Within the Iris, dusty nebular material surrounds a massive, hot, young star in its formative years. Central filaments of cosmic dust glow with a reddish photo-luminescence, as some dust grains effectively convert the star’s invisible ultraviolet radiation to visible red light. Yet the dominant color of the nebula is blue, characteristic of dust grains reflecting starlight. [SkySafari Pro]

•5x5min, 3x15min, & 10x5min
•ISO 500, 800, & 1600
•120min integration, guided
•Canon 60Da/IDAS LPS-P2/254mm TMB APO/elCapitan
•Cropped frame
•Moon 40%
•Previous thread...


Processing Workflow: (Instructions here...)
•RAW file conversion in ImagesPlus 5.0
•Align TSR/Combine in ImagesPlus 5.0
•Crop in ImagesPlus 5.0
•Digital Development in ImagesPlus 5.0
•Multi Point Flatten Background-Planar in ImagesPlus 5.0
•Multiresolution Smooth-Sharpen + Invert Mask in ImagesPlus 5.0
•Geometric Transform/Scale in ImagesPlus 5.0
•Adaptive Richardson-Lucy Restoration + Luminance Mask in ImagesPlus 5.0
•Smoothing in ImagesPlus 5.0
•Saturation (Block), Contrast, and 'Noise Reduction' in Photoshop Extended CS6
•Star Size and Halo Reduction in ImagesPlus 5.0


Combined/Unprocessed FITs full/cropped here...

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dp297
sage


Reged: 12/14/10

Re: NGC 7023 - Iris Nebula [Up Close] new [Re: mmalik]
      #5545003 - 11/29/12 06:16 AM

Very nice closeup.....
Beautiful.....
I must also admit that it is very nice of you to attach the unprocessed files for practice.


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nikao
member


Reged: 06/14/12

Re: NGC 7023 - Iris Nebula [Up Close] new [Re: dp297]
      #5545005 - 11/29/12 06:20 AM

Nice!
To me it's a bit to 'soft' however. Might be the processing


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mmalik
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: nikao]
      #5545026 - 11/29/12 07:05 AM

Thanks Dimitris; I recall your stunning work on Iris.

Nikao, I would say, yes; partly intentional on my part to not over do. Please feel free to try out the FITs and post results. Regards

Edit: Nikao, I have updated the image in first post; I added 'Star Size and Halo Reduction' step which seemed to have helped sharpen it. Thx


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fco_star
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Reged: 12/13/10

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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: mmalik]
      #5545033 - 11/29/12 07:17 AM

Beautiful.... great job

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jambroseus
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Reged: 04/05/07

Loc: Mount Laurel, New Jersey
Re: NGC 7023 - Iris Nebula [Up Close] new [Re: fco_star]
      #5545070 - 11/29/12 08:10 AM

Good close-up and color. Perhaps a tad of sharpening would help...

John


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srosenfraz
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: jambroseus]
      #5545389 - 11/29/12 11:46 AM

Very nice capture, Mike.

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fco_star
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: srosenfraz]
      #5546117 - 11/29/12 07:37 PM Attachment (20 downloads)

mmalik, I try your data but I have to use Nebulosity to change the format from FIT to TIF and I get this lines over the picture because is the free (practice version)
I really enjoy using such a good data
hope you like my version / I use PS to process it

Edited by fco_star (11/29/12 07:41 PM)


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mmalik
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: jambroseus]
      #5546548 - 11/30/12 01:11 AM

Quote:

Perhaps a tad of sharpening would help...




Thanks Jose/Scott.

John, for Iris I have relied more on 'less smoothing' than sharpening per se. Mike U. put it nicely in one... thread, "Not much reason to smooth an area only to sharpen it later."

Edit: John, I have updated the image in first post; I added 'Star Size and Halo Reduction' step which seemed to have helped sharpen it. Thx


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mmalik
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: fco_star]
      #5546552 - 11/30/12 01:15 AM

Thanks Francisco; your image looks good. Lines make it look like an Iris shadow on the boardwalk.

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jambroseus
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Reged: 04/05/07

Loc: Mount Laurel, New Jersey
Re: NGC 7023 - Iris Nebula [Up Close] new [Re: mmalik]
      #5546881 - 11/30/12 09:49 AM Attachment (20 downloads)

Looks better Mike, but this is more of what I had in mind...
(Hope you don't mind)

John


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zjc26138
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Reged: 02/24/05

Loc: Mingo Junction, Ohio
Re: NGC 7023 - Iris Nebula [Up Close] new [Re: jambroseus]
      #5546905 - 11/30/12 10:14 AM

Beautiful image!

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mmalik
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: jambroseus]
      #5547549 - 11/30/12 05:19 PM

Quote:

Looks better Mike, but this is more of what I had in mind...
(Hope you don't mind)




Looks sharp John; thanks for re-processing. Could you share your processing workflow?

Folks are very welcome to try processing and sharing results, reason I have been posting unprocessed FITs. Regards


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Nils_Lars
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: mmalik]
      #5548069 - 11/30/12 11:50 PM

Very cool this close , super details.

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mmalik
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: Nils_Lars]
      #5548146 - 12/01/12 01:05 AM

Thanks Zach/Erik.

Note: I have updated image in the first post that's bit sharper than the original one I had posted.


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jambroseus
professor emeritus


Reged: 04/05/07

Loc: Mount Laurel, New Jersey
Re: NGC 7023 - Iris Nebula [Up Close] new [Re: mmalik]
      #5548425 - 12/01/12 08:47 AM

Mike, just used the star size and halo reduction in ImagesPlus - One command and out.

John


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dp297
sage


Reged: 12/14/10

Re: NGC 7023 - Iris Nebula [Up Close] new [Re: jambroseus]
      #5548713 - 12/01/12 12:31 PM Attachment (14 downloads)

My rendition is on the fly but ...what the heck...I might as well post....

Edited by dp297 (12/01/12 12:33 PM)


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mmalik
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Re: NGC 7023 - Iris Nebula [Up Close] new [Re: dp297]
      #5549022 - 12/01/12 04:05 PM

Dimitris, thanks for sharing your rendition; better color balance. Also like the way you have made that smaller rift around star so prominent. Regards

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fco_star
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Reged: 12/13/10

Loc: Texas, Midland
Re: NGC 7023 - Iris Nebula [Up Close] new [Re: mmalik]
      #5550122 - 12/02/12 10:48 AM

Dimitris, nice job in such a good data !

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dp297
sage


Reged: 12/14/10

Re: NGC 7023 - Iris Nebula [Up Close] new [Re: fco_star]
      #5550681 - 12/02/12 05:06 PM

Thanks a lot!

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