Image of the day

Captured by
Lawrence Parchman

Sculptor Galaxy (NGC 253)

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Posts Made By: dan kowall

May 5, 2006 01:28 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 4535 and 4526

Posted By dan kowall
That's well processed with good composition, Vincent.

Vincent Bert said:
trashed the color due to poor seeing.
That's okay, patience is needed for good color data.
If you feel the need to remove the star halos, here's a method:
http://www.astrodon.com/oldsite/HaloRemoval.html

dan kowall

May 5, 2006 01:33 PM Forum: CCD Imaging and Processing/Deep Sky

M 101

Posted By dan kowall
Thanks for the comments, guys!

dan

May 16, 2006 10:28 PM Forum: Equipment Talk

Powr Supply

Posted By dan kowall
This may be enlightening:
http://aajonahfish.com/sinewave_power.htm

dan kowall

May 19, 2006 03:45 PM Forum: CCD Imaging and Processing/Deep Sky

M97 and M108 - more from the Epsilon 160

Posted By dan kowall
This image shows that your planning and processing were both top rate, Tyler.
My regards,

dan

May 27, 2006 02:24 AM Forum: CCD Imaging and Processing/Deep Sky

Reprocessed NGC4565 with Tak Epsilon

Posted By dan kowall
Definitely better, Tyler.

dan kowall

May 27, 2006 02:36 AM Forum: CCD Imaging and Processing/Deep Sky

IC 5068

Posted By dan kowall
Vincent Bert said:
Not sure this one really needs color.
>>>I agree. The Ha greyscale works fine for me.

I'm out imaging now so had to process on my laptop so it probably looks a little whacked out on a good monitor.
>>>I looked at it on a calibrated monitor and the processing looked perfect to me.

The composition on this one is first rate, too.

dan kowall

June 3, 2006 03:19 PM Forum: CCD Imaging and Processing/Deep Sky

Another Centaurus A

Posted By dan kowall
Jim Thommes said:
it maxes out at 12 degrees altitude from my geography

Imaging that low shows that you're braver than I, Jim.
I rarely start a series unless it's above 45 degrees.
In any event, it's a remarkable image.
My regards,

dan kowall

June 4, 2006 02:19 PM Forum: Equipment Talk

pier material suitability

Posted By dan kowall
Stainless steel is good, but the diameter is awfully narrow for imaging purposes.
If you only use a 24" section it might work.
Filling it with sand or concrete doesn't really add any strength to the pier.
Here are some numbers from Dennis Persyk to help you decide:
http://www.cloudynights.com/item.php?item_id=1275

dan kowall

June 9, 2006 10:46 PM Forum: CCD Imaging and Processing/Deep Sky

M57 + surrounds

Posted By dan kowall
That's an excellent image, Rick, deep and detailed.

dan kowall

June 17, 2006 10:54 PM Forum: CCD Imaging and Processing/Deep Sky

Crescent w/AP 130 F/6, SXV H9 in HA

Posted By dan kowall
That's an excellent start, Rob.
Flexure could also account for the star elongation.
If your guiding numbers are good during guiding, then it's either flexure or the alignment of subs.
If there is no elongation in your subs, then it's alignment.
Did you also try aligning in Maxim? It might give a better result than Images Plus. CCDStack has an excellent alignment procedure and I think they have a free trial time of a month or so.
Narrow band is great for making those light polluted skies into dark skies.
One other thing:
Your white point looks to be clipped a bit, either from processing or saturated subs, but that is easily remedied.
You've made a good entrance into the world of CCD imaging.

dan kowall
photonhunter.com

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