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Posts Made By: dan kowall

May 3, 2006 08:00 PM Forum: CCD Imaging and Processing/Deep Sky

M 101

Posted By dan kowall

This was taken recently over a span of four nights from my light polluted back yard.
A mid-sized image is attached, but a larger image and image details may be found here:
http://www.photonhunter.com/galaxies/M101,RC.html
ST10 on a 12" reflector @ f/9
LRGB: 170-120-100-150 minutes, all unbinned
Thanks for looking,

dan kowall

May 10, 2006 12:40 AM Forum: CCD Imaging and Processing/Deep Sky

The Embryo Nebula

Posted By dan kowall

Here's an emission nebula to provide a counterpoint to this galaxy season.
The data is from last year and was more or less a test image for a new setup.
There was some substantial field rotation so I cropped the image.
Attached is a mid-sized image. Details and a larger image may be found here:
http://www.photonhunter.com/nebulae/IC1848.html
HaRGB: 240-45-45-45 minutes
Thanks for looking,

dan kowall

June 12, 2006 06:36 PM Forum: CCD Imaging and Processing/Deep Sky

First Light Butterfly

Posted By dan kowall

I finally got a clear night to try out some new equipment.
A full-sized image and details can be found here:
http://www.photonhunter.com/nebulae/IC1318,AP130.html
It's 3 hours of 6nm Ha with an ST2000XM on a 5" refractor looking at the central portion of the Butterfly Nebula.
Thanks for looking,

dan kowall

June 22, 2006 06:13 PM Forum: CCD Imaging and Processing/Deep Sky

An Ancient Globular

Posted By dan kowall

This is one of those quick shots while waiting for my main target to rise.
It took me much longer to process it than to gather the data.
M 92 is one of the oldest known globulars, over 12 billion years old.
A large image and details may be found here:
http://www.photonhunter.com/clusters/M92.html
but basically it's:
an ST2000 on a 5" refractor, RGB: 10-10-10 minutes
Enjoy,

dan kowall

July 17, 2006 08:51 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 7635, WIP

Posted By dan kowall

I ordinarily wouldn't post this work in progress because it obviously needs more exposure time, but clear nights have been rare lately and who knows when I'll be able to get back to this.
So if you'll permit me this indulgence...
90 min Ha (6nm)
ST10XME on an AP130 @ f/6
Thanks,

dan kowall

July 19, 2006 05:00 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 7635, A Finished Work

Posted By dan kowall

Miracle of miracles, the weather cleared for a second night in a row, and I was able to finish work on the Bubble Nebula. I had posted a half-done image the other day.
I guess it should be properly titled 'Sharpless 162' since the full emission area is the dominant feature of the image. We are more familiar with the spherical cavity carved out by the Wolf-Rayet star in the middle, though.
4.25 hours of 6nm Ha
ST10 on an AP130
A mid-sized image is attached, but a larger image and details can be found here:
http://www.photonhunter.com/nebulae/Sh162,Ha.html

dan kowall

August 12, 2006 05:33 PM Forum: CCD Imaging and Processing/Deep Sky

NGC 281

Posted By dan kowall

I'm working with a new setup here, so acquistion wasn't as good as it will be in the future.
I'm hoping against hope that the weather holds and I can gather some more narrowband data for this one, but the Ha shown here can stand on its own.
ST10XME on an AP155
4 hours of 6nm Ha
It's been a frustrating summer, with weeks between imaging sessions.

dan

August 20, 2006 04:08 PM Forum: CCD Imaging and Processing/Deep Sky

A Lemondade M31

Posted By dan kowall

I had some time left the other night after shooting the main set of exposures for the night.
I hate to waste any of my rare clear skies, especially since the seeing was uncommonly good that night and the moon was favorable.
I took some RGB exposures of M31, or so I thought, but it upon processing, it looks like the filters didn't change. I'm suspecting the usual culprit: operator error.
Applying that disgustingly cheerful philosophy of "When life gives you lemons, make lemonade", I made a synthetic luminance of what exposures that I had.

dan kowall

August 21, 2006 03:24 AM Forum: CCD Imaging and Processing/Deep Sky

M31 (In Living Color)

Posted By dan kowall

Boy, do I feel like a doofus.
I recently posted an M31 with a synthetic luminance because I thought it didn't have the proper color information, but when I examined it more closely, of course it did. The colors were just a little weak because of the short exposure time. Here it is more properly processed.
Larger images and full details are here:
http://www.photonhunter.com/galaxies/M31,AP155.html
I'm hoping to give this galaxy the deeper exposures and mosaic that it deserves when the weather allows.

dan kowall

August 24, 2006 05:55 AM Forum: CCD Imaging and Processing/Deep Sky

Iris In Bloom

Posted By dan kowall

My favorite reflection nebula.
Attached is a full-sized crop.
Uncropped images and image details are here:
http://www.photonhunter.com/nebulae/NGC7023,AP155.html

dan kowall