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Lawrence Parchman

Sculptor Galaxy (NGC 253)

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Posts Made By: dan kowall

July 12, 2005 03:23 PM Forum: CCD Imaging and Processing/Deep Sky

M101 from Dogtown Ranch, CA

Posted By dan kowall
That's a very nice M101, Vincent. Your learning plan is a good one. There's plenty to learn with 'simple' luminance processing and a lot of these skills are used with color processing, too.

dan kowall

July 16, 2005 02:31 PM Forum: CCD Imaging and Processing/Deep Sky

M27 H-Alpha Enhanced

Posted By dan kowall
You have some excellent detail there, Jim, especially for an 8" scope. I agree, getting the 'proper' teal color for M 27 isn't always easy. I took your image into Photoshop and it looks like you have some of the outer envelope lurking there. I would assume from the Ha data?
Great job.

dan kowall

July 16, 2005 02:39 PM Forum: CCD Imaging and Processing/Solar System

Barbados Mission Webpage

Posted By dan kowall
That's a stunning accomplishment, Damian.
I'm awed.

dan kowall

July 22, 2005 03:13 AM Forum: CCD Imaging and Processing/Solar System

first early Mars

Posted By dan kowall
That is so sweet, Alan, it's hard to believe it's going to get even better.
Is the FFC necessary when using this camera?

dan kowall

July 24, 2005 04:42 PM Forum: CCD Imaging and Processing/Deep Sky

M20 Trifid Nebula

Posted By dan kowall
Excellent color, composition, and processing, Jim.
It's a vast improvement over your previous version of this nebula.
The flaring of the stars in the lower left seems to suggest that your camera was not orthagonal. Are you using a threaded connection for your camera?

dan kowall

July 30, 2005 12:52 AM Forum: CCD Imaging and Processing/Deep Sky

M13 wide field deep sky

Posted By dan kowall
Oh my, you've done a wonderful job of capturing those background galaxies, Roland. They're nicely resolved, too.
If you had gradients from the light pollution, you've handled them perfectly.
I'm wondering if you could mask off the core of M13 and selectively apply curves or levels to further resolve the core.
Will you be adding color to this in the future?

dan kowall

July 30, 2005 02:08 PM Forum: CCD Imaging and Processing/Deep Sky

A Better Bubble

Posted By dan kowall
Thanks for the comments, guys.
Herbert:
Ha stands for hydrogen alpha. When an excited hydrogen electron returns to a lower state, it emits a photon of a specific frequency. In the visible range, the alpha frequency is the most commonly imaged.
I, too, enjoy the stark simplicity of black and white images and will always take them.
I must say, however, that I was awestruck by the intense blue color of The Blue Snowball Nebula when I first saw it, for instance, and a color rendition of that object seems appropriate.

dan

July 30, 2005 02:12 PM Forum: CCD Imaging and Processing/Solar System

Last Quarter Phase Moon

Posted By dan kowall
That's very nice, Tom. It's well framed, properly exposed and focused. You can't ask for more from an image.

dan kowall

July 31, 2005 02:55 AM Forum: CCD Imaging and Processing/Deep Sky

IC1318b - HA and RGB

Posted By dan kowall
There's an awful lot of detail and color in there for 44 minutes, Jim, even in the large image. I liked your processing steps. It's not so easy to combine Ha and RGB to get a pleasing result.

dan kowall

August 5, 2005 07:09 PM Forum: CCD Imaging and Processing/Deep Sky

Finally!! The clouds left.... Cocoon (HaR)RGB

Posted By dan kowall
You deserve a standing ovation for that one, Tom.
All aspects are well done.

dan kowall

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