NGC5139 Omega Centauri

[bluescope]

Hi

This is another image from last night's session.

total 6mins 18x20sec @ -14c CCDOPS

Stacked RGB and DDP files in DSS mosaic mode 3x drizzle again

5054x4317 image cropped to 4x3

GradientXTerminator course filter only

[iceman (Mike)]

Looking very good, Steve. Nice and sharp!

[Matty P (Matt)]

A great result Steve, well done.

[bluescope]

Originally Posted by iceman

Looking very good, Steve. Nice and sharp!

Cheers Mike .... I did a version with slight USM of 0.3 pixels at 800x600 size but prefered it without.

Originally Posted by Matty P

A great result Steve, well done.

Thanks Matty, glad you like it !

[peeb61 (Paul)]

Great image Steve,
Another one of those images when you can just sit back and gaze into space.

The quality of images on this forum and from amateurs around the world just keep getting better and better!

I had a go at Omega Centaurus last night...I will post shortly.

Keep up the great work mate.

Paul

[bluescope]

Originally Posted by peeb61

Great image Steve,
Another one of those images when you can just sit back and gaze into space.

The quality of images on this forum and from amateurs around the world just keep getting better and better!

I had a go at Omega Centaurus last night...I will post shortly.

Keep up the great work mate.

Paul

Thanks Paul, I just updated the image with a slight USM version, glad you like it.

[Robert_T]

Wow Steve Now that is resolved down to the core. Impressive stuff.

Am I right in assuming that it's better to run a lot more images of short duration for globulars to remove all trace of tracking error in order to really get pinpoint stars? And I guess cos something like Omega is bright enough to get away with short exposures?

cheers,

Rob

[Ric]

Hi Steve, a great looking image. It's well resolved and very clear.

Cheers

[bluescope]

Originally Posted by Robert_T

Wow Steve Now that is resolved down to the core. Impressive stuff.

Am I right in assuming that it's better to run a lot more images of short duration for globulars to remove all trace of tracking error in order to really get pinpoint stars? And I guess cos something like Omega is bright enough to get away with short exposures?

cheers,

Rob

The premise that I worked on with this image, after having tried longer exposures and losing the core definition, was to do shorter exposures so as not to burn out the stars etc. It also depends on your ccd imager. The ST2000XCM is very sensitive and as you say Omega Centauri is very bright. It's all trial and error with this game Rob. I had some really good images of it with my 350D as well, usually 30x20sec stacks unguided. You'll be able to find them if you search my forum threads over the last 12 months I suppose.

[bluescope]

Originally Posted by Ric

Hi Steve, a great looking image. It's well resolved and very clear.

Cheers

Thanks Ric, I'm pretty happy with how it came out, glad you like it !