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  #1  
Old 02-11-2007, 11:55 AM
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PhotonCollector (Paul)
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NGC253 - The Silver Coin Galaxy

Hi all,

Here's version 2 of my NGC253 image from last month.

It's a 90-minute exposure (30 x 3-min. sub-frames) @ ISO400 using the modded Canon 300D on my 12" F/5 and losmandy G-11 mount.

Higher Res. image and image details here

http://www.skylab.com.au/pmsa/ngc253_page3.html
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Click for full-size image (NGC253_071013LowRes.jpg)
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  #2  
Old 02-11-2007, 11:59 AM
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h0ughy (David)
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Nice one, I dunno these people with observatories - you think they would show a crappy shot every now and then - not stuff like this!!! In envy - Mr Hough
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  #3  
Old 02-11-2007, 12:32 PM
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Wow that is a stunning shot.

Gazz
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  #4  
Old 02-11-2007, 01:13 PM
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erick (Eric)
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Struggling with the conditions, I see:- "Seeing: 8/10. Wind: 0/10. Moisture: 0/10. Ambient Temp. 9°C"

That's a great image, Paul, many thanks!
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  #5  
Old 02-11-2007, 01:13 PM
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Very nice. Dark sky and plenty of detail. be interesting to see what magnitude limit it goes down to.
Scott
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  #6  
Old 02-11-2007, 09:01 PM
gbeal
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Very nice image Paul, very nice.
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  #7  
Old 02-11-2007, 09:14 PM
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A very nice image Paul, you've captured some very intricate details in the arms.

Cheers
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  #8  
Old 02-11-2007, 09:21 PM
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wysiwyg (Mark)
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Very nice image

NGC253 is definitely on my list of DSO's to photograph, thats if the weather ever improves. If its not clouds its the moon, cant win.
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  #9  
Old 03-11-2007, 08:50 AM
jase (Jason)
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Enjoy the composition Paul, but this one looks a little too "over-cooked". Background is really black (histogram appears clipped) and stars in the galaxy have black halos around them due to over sharpening. Perhaps a reprocess for a poor weather evening.
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  #10  
Old 03-11-2007, 09:26 AM
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I am definitely no expert when it comes to processing, as we all know... however I can see what Jase is saying, However Paul, having said that, I would be hanging that one on my wall, well done indeed.

Leon
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Old 03-11-2007, 09:39 AM
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dugnsuz (Doug)
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Quote:
Originally Posted by jase View Post
Enjoy the composition Paul, but this one looks a little too "over-cooked". Background is really black (histogram appears clipped) and stars in the galaxy have black halos around them due to over sharpening. Perhaps a reprocess for a poor weather evening.
Quote:
Originally Posted by leon View Post
I am definitely no expert when it comes to processing, as we all know... however I can see what Jase is saying, However Paul, having said that, I would be hanging that one on my wall, well done indeed.

Leon
Beautiful image Paul.

I've got a foot in both of the above camps.

I recently looked over many of my final images and was amazed that most had clipped black point histograms. They just looked more pleasing to the eye that way!!
I'm find it hard to juggle the technical and the aesthetic a lot of the time.

Cheers
Doug
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  #12  
Old 03-11-2007, 02:56 PM
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I tend towards the aesthetic, looks great, well done !

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  #13  
Old 03-11-2007, 05:16 PM
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Lovely and sharp and nice colors but just a little too dark on the background.
A wonderful image Paul!
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  #14  
Old 05-11-2007, 09:57 PM
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NGC 253 - V3 - Is this better ?

Glad you all enjoyed looking at the image of NGC 253. Thanks for your kind
comments.

I do tend to agree though with some of you that it is "too cut" and the background is too dark. This was likely the result of a new image processing tool I used for the first time to flatten the background, though it seemed to look good at the time. :-)

Anyhow I've had another go at processing the image with "less cut" this
time and without the flatten background tool. It's still bit of a trade off
as there is still some gradient in the background of the image.

whadda ya's think ? is this image better ?

higher res. image here http://www.skylab.com.au/pmsa/ngc253_page3.html
Attached Thumbnails
Click for full-size image (NGC253_071013bLowRes.jpg)
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Last edited by PhotonCollector; 05-11-2007 at 09:59 PM. Reason: add url
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  #15  
Old 06-11-2007, 12:04 PM
tornado33
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Ahh yes that is indeed better. I always like to just be able to see the sky background, that way nothing is lost. Ther faint outer detail is there and the inner parts not burnt out, excellent image.
Scott
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  #16  
Old 06-11-2007, 12:16 PM
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You can certainly see the difference between the two images on your web site Paul. Like what you have done there with the reprocessing and prefer the second image.
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  #17  
Old 08-12-2007, 05:27 PM
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h0ughy (David)
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Thanks for the opportunity to have a hack at it Paul and show you what IP can do (and note in the right hands could be used to produce something great and remarkable, just not mine)

its not the best but it shows that Pauls raw data is not tooo bad (ok far better than what i can do ) same details as his original stacking - but just done in images plus and only digital development on auto and saved to photoshop to save for the web.
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  #18  
Old 08-12-2007, 10:27 PM
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5ash (Philip)
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Great improvement Houghy.The skys more realistic , shouldnt be pitch black! The galaxy looks softer , more realistic.A great improvement on excellent data.
philip
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