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Sculptor Galaxy (NGC 253)

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Posts Made By: Ron Wodaski

November 12, 2002 05:20 AM Forum: CCD Imaging and Processing/Solar System

Saturn Nov.8th

Posted By Ron Wodaski
Really nice results. Excellent!

Ron Wodaski
author of "The New CCD Astronomy"
http://www.newastro.com

November 19, 2002 05:10 PM Forum: CCD Imaging and Processing/Solar System

Jupiter 11-13-02 GRS , Io Shadow

Posted By Ron Wodaski
Very nice; lots of detail.

Ron Wodaski

November 19, 2002 05:11 PM Forum: CCD Imaging and Processing/Solar System

New Saturn Picture with Encke Division!

Posted By Ron Wodaski
Very sharp, nicely done. Taking and processing a lot of images seems to really pay off.

Ron Wodaski

November 19, 2002 05:16 PM Forum: CCD Imaging and Processing/Solar System

M27 - D60

Posted By Ron Wodaski
Again, simply amazing what you can do with that camera. How did you balance color? M27 is tricky, since it has emission lines that seldom match up well with the color profile of RGB filters. I've attached a version that balances the OIII and Ha emissions, at the cost of unbalancing some of the star colors. There really isn't a way to balance both without taking an OIII-filtered image and using it to adjust the blue/green balance (the OIII emission line falls right in the middle of most blue and green filters, and should result in a teal color when balanced).

It was as easy to balance colors from the D60, however, as it would be from images taken with a conventional CCD. It would seem that the D60 is a very good choice for deep-sky imaging.

Ron Wodaski

November 22, 2002 01:29 AM Forum: CCD Imaging and Processing/Solar System

My first try with LRGB...

Posted By Ron Wodaski
Very nicely done. It's very hard to get good color when the moon is out. A few tips:

* You can increase color saturation to deepen the colors. How you do it depends on what software you are using.

* You can probably drop the sky brightness a bit more. Do this by raising your black point for the color image (all three channels at once if you have a choice).

* Do you have some light pollution? The image has a slight green cast. You might try cutting just the green channel a little bit (use a gamma of 0.95, or Curves in Photoshop or a similar tool).

Ron Wodaski
author of "The New CCD Astronomy"
http://www.newastro.com

November 25, 2002 10:32 PM Forum: CCD Imaging and Processing/Solar System

m42 prelim...

Posted By Ron Wodaski
Nice "test" exposure - looks pretty darn good to me.

Ron Wodaski

December 1, 2002 03:33 AM Forum: CCD Imaging and Processing/Solar System

Saturn is BIG!

Posted By Ron Wodaski
Nice details. I think you're a little over-processed, though. Lots of artifacts are visible - double and triple limb echoes, shadow echo at top left, artificial brightening of rings, etc. It would be interesting to see this image with a lighter sharpening run.

Ron W.

December 1, 2002 07:11 PM Forum: CCD Imaging and Processing/Solar System

Moon Venus Mars

Posted By Ron Wodaski
Very nicely done; moon detail illuminated by earthshine can clearly be seen.

I saw this visually this morning, and it was most impressive than, and in your image. Thanks for posting.

Ron Wodaski

December 1, 2002 07:15 PM Forum: CCD Imaging and Processing/Solar System

STV with 3.5" refractor

Posted By Ron Wodaski
The STV's main function is as an autoguider, and it is superb at that task. As an imager, it is only so-so. The ST-237 easily outdoes it with better capabilities in that department.

The main appeal of the STV from your standpoint would be the video output. However, the tiny LCD screen in the STV is not even close to optimal for viewing the images; you would need a small television monitor to see the images at their best.

What I did was buy a second-hand small laptop, and I use that to control an ST-237. I look at the laptop as the control box, not a computer - I never use it for anything but imaging and guiding with the ST-237.

Even when I use the STV, I often control it from a laptop, and run a cable to a small TV monitor so I can see things in more detail. The built-in LCD is only adequate for things other than guiding.

Ron WOdaski
author of "The New CCD Astronomy"
http://www.newastro.com

December 1, 2002 07:16 PM Forum: CCD Imaging and Processing/Solar System

SAturn Nov 27, 2002 w/ Meade 7" Mak

Posted By Ron Wodaski
Really nice image. Lots of detail. Might be interesting to try a deconvolution on this, or maybe the adaptive unsharp mask in Astroart.

Ron Wodaski

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