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Posts Made By: dan kowall

October 23, 2004 08:02 PM Forum: Home Observatories

Split drum winch

Posted By dan kowall

Hello all,
It's hard to express how happy I am.
I've been trying to find a satisfactory way to close the roll off roof on my observatory for almost a year now. The opening hand winch was working fine but all of my efforts to find a closing apparatus met with failure.
After reading a mention of a split drum winch, I knew this would solve my problem. I modified my opening hand winch into a split drum winch, added the needed pulley and hardware, and I can now report success.
I now have a simple, elegant way to open and close my roof. As one cable is winding onto the winch, the other cable is unspooling. Flipping the reversing rachet either opens or closes the roof. No more balancing with one foot on a step ladder, the other foot braced against a beam, and pushing the roof closed with my hands.
Minimal effort is required to move the heavy 8' x 12' roof.

dan kowall

November 18, 2004 03:10 PM Forum: CCD Imaging and Processing/Solar System

M 82

Posted By dan kowall

From a couple of nights ago:
ST10XME on a 12" reflector
LRGB: 65-15-20-30
Next time I'll get some Ha data and try not to lose a red subexposure.
Thanks for looking.

dan kowall

December 5, 2004 06:08 PM Forum: CCD Imaging and Processing/Solar System

NGC 1514

Posted By dan kowall

The full moon the other night had me searching for Ha targets. This small, dim planetary nebula in Taurus made a challenging target. It obviously needs more exposure and I'd like to get some color data when the moon's not around, but here's a preliminary shot.
ST10 on a 12" reflector, 120 minutes in Ha
Thanks for looking, comments welcomed.

dan kowall

February 1, 2005 06:15 PM Forum: CCD Imaging and Processing/Deep Sky

M 97, The Owl Nebula

Posted By dan kowall

I normally wouldn't post this because 1) I was having guiding issues, 2) it obviously needs more exposure, 3) I've been experimenting with color combining techniques and I don't think I did justice to this image, but 5 december was the last decent imaging session for me and I've been starved for photons.

ST10 on a 12" reflector @ f/9
LRGB 60:40:40:60
seeing 1/5 (I'll take whatever I can get)

On the bright side (or should I say dark side), it's supposed to be clear tonight.
Thanks for looking,

dan kowall

February 4, 2005 03:50 PM Forum: CCD Imaging and Processing/Deep Sky

A Piece of the Jellyfish

Posted By dan kowall

To all,
Here's a small piece of The Jellyfish Nebula, IC 443.
ST10 on a 12" reflector @ f/9
12 x 10 minutes in Ha ( 6 nm)

Comments welcomed,

dan kowall

February 4, 2005 03:56 PM Forum: CCD Imaging and Processing/Solar System

Re: new webpage created with Saturn/ Jupiter image

Posted By dan kowall

The images look great as does your webpage.
Well done,

dan kowall

February 8, 2005 05:11 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 4565

Posted By dan kowall

Imaged over two nights of poor seeing:
ST10XME on a 12" reflector at f/9
LRGB: 160-30-30-35 minutes
Minimal processing.

Thanks for looking. Comments welcomed.

dan kowall

February 11, 2005 03:06 AM Forum: CCD Imaging and Processing/Deep Sky

M106

Posted By dan kowall

From a few nights ago, seeing was 1/5.
ST10 on a 12" reflector at f/9
LRGB: 90-20-20-25 minutes (RGB binned)
Thanks for looking.

dan kowall

February 19, 2005 03:45 PM Forum: CCD Imaging and Processing/Deep Sky

Tilting at a Windmill

Posted By dan kowall

I've imaged this object, M 82, many times but have never produced an image that I'm pleased with. I keep coming back for more tries, though. I'm like a dog that keeps chasing a car. Plus some recent images posted here by Adam Block, Enrico Africa, and others have inspired me to keep tilting at this windmill.
This is my latest, though not my last, effort.
ST10 on a 12" reflector @ f/9
LRGB: 50-20-20-25 minutes

dan kowall

March 1, 2005 01:10 AM Forum: CCD Imaging and Processing/Deep Sky

M51-Just the L for Now

Posted By dan kowall

Hello all,
I've been waiting for the clouds to leave so I could get some color data for this image but I guess I'll have to wait a little longer (It's snowing again as I type this). It has given me a chance to try some new processing techniques on the luminance, though.
ST10 on a 12" reflector @ f/9
21 x 5 minutes, 1 x 1
Seeing 1/5 (Beggars can't be choosers)
A gibbous moon gave me plenty of gradients to work on.

dan kowall