Silver Coin Galaxy One More Try

[leon]

Hi Guys yesterday i posted an image of NGC 253 (Silver Coin Galaxy) the seeing wasn't that good that night so i had another go at i last night at 2.00 am at 0 degrees.

I'm not sure if it is any better, so you good people be the judge, and please comment either way. :shrug:

6 images at 500 ISO @ 4 Min's each, guided with Toucam 840 K, Mounted on G11 through Tak 106, in camera darks, and flat fielded, Processed in Image Plus. The image is cropped to 999 x 1392 from a full res shot.

Cheers Leon :thumbsup:

[h0ughy]

noisey very noisey!!!!

[leon]

Is it Houghy, is that because the exposure was to long you reckon, it was only at 500 ISO, but we do have quite a bit of light pollution around here.

Any advice will be greatly accepted.

Leon

[Garyh]

looks good Leon but like Houghy says, very noisey, was it like that after stacking? Maybe you have added or summed instead of average or meridian stacked ??
cheers Gary

[iceman]

I'm not sure if it's noise, or post-processing sharpening.. have a look at the stars in front of the galaxy - there's a black ring around them which is usually a sign of over-sharpening.

And as Gary said, did you ADD or AVG the frames?

Can you post the uncropped version?

[leon]

Thanks Guys yep i think you are right, i tend to over sharpen the images a bit much at times, and im sure now, that i think about it more that is what has happened with this one.

I will start again with the raw data and see how it comes out with no sharpening at all, and post it later.

I must leave that button alone... :lol: :lol:

Leon :thumbsup:

[RB]

Looks like a combination of both oversharpening and Sum stacked.
What value Sharpening did you apply to this one Leon?

Try it again with an Average stack, no sharpening and post it again.

[leon]

Yep, I will do that later Andrew and see if that makes for a better image, this processing business can be quite involved, but I think i'm slowly getting there, at least it is enjoyable learning all this stuff.

leon

[EzyStyles]

stunner of a shot leon. :thumbsup:

[leon]

Thank You Eric, i reckon it is not to bad either, i think I'm striving to hard and not seeing the whole picture, and enjoying the moment of what i am capable of achieving, it is my best try so I'm happy with that.

Leon

[bluescope]

Great detail in your image Leon .... I've adjusted it a little to reduce appearance of noise etc .... hope you don't mind.

:thumbsup:

[leon]

Steve don't mind, :eyepop: bloody hell man come to my place and help me, that is fantastic, how do i get a copy, :shrug: is that possible.

Leon :thumbsup:

[bluescope]

Glad you like the result Leon. Just open the file ( view the attachment ) and right click on the image to save it to your computer.

:thumbsup:

[leon]

Done that Steve, thanks mate, looks pretty good to me.

leon

[bluescope]

No worries Leon !

:thumbsup: