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FORUMS Photo Sharing & Discussion Astronomy & Celestial 
Thread started 29 May 2012 (Tuesday) 20:30
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Milky Way pictures turning out poor. Advice please

 
IMADreamer
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Location: Illinois
     
May 29, 2012 20:30 |  #1

I've tried and tried to get this right but I just can't seem to do it. It could be there is too much light pollution where I'm at or I just stink at this but whether I'm stacking or doing a single exposure it just doesn't seem to come out very well. Any advice would be greatly appreciated.

This is a single exposure that I've done some post processing on.

IMAGE: http://farm8.staticflickr.com/7088/7298827774_47c803ccba.jpg
IMAGE LINK: http://www.flickr.com …/67761159@N02/7​298827774/  (external link)
milky-way-in-Missouri (external link) by EXORIMADreamer (external link), on Flickr

Here is a stacked set. It's dull and lifeless. I've tried to mess around with Deep Sky Stacker and process it but it doesn't seem to work well and my computer doesn't seem to like DSS much either as it runs slow as heck. I fiddled with it in PS but it didn't do much there either.
IMAGE: http://farm8.staticflickr.com/7084/7298827512_0c28d70114.jpg
IMAGE LINK: http://www.flickr.com …/67761159@N02/7​298827512/  (external link)
milky-way-stacked-for-web (external link) by EXORIMADreamer (external link), on Flickr
Basically what I've been doing is trying to work the levels and stretch the histogram. Then I'll move on to curves, and finally some saturation and contrast. All of my photos are taken with my 60d on a tripod, no tracking. From what I understand I shouldn't need it for the milky way. The stacked photo was taken with the nifty fifty and the other with my kit lens.

Help. thanks! lol

Jason: 60d user. My flicker page feel free to friend or contact me: http://www.flickr.com/​photos/exorimadreamer/ (external link)
www.infinite-garage.com (external link)

  
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gewb
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May 29, 2012 21:23 |  #2

Start with location. Go to:

http://cleardarksky.co​m/csk/ (external link)

Look up your shooting location. Best to be in a blue, gray or black area.

Next, check the star charts to see the best time to see the part of the Milky Way you want to shoot. I use the Stellarium program - looks like July and August will be best for what I will shoot.

Meanwhile, search this sub-forum as there is a lot of good info here!

Regards,
GEWB


90D / 60D / Pro1 / A85

  
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IMADreamer
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May 29, 2012 21:36 |  #3

Yeah I've done that. I'm in the blue range and I have Stellarium. While I admit I'm not shooting the best part of the milky way in that picture I'm still shooting the milky way. My aim isn't my problem. The best part is towards a town and the picture gets really polluted when I shoot that way.


Jason: 60d user. My flicker page feel free to friend or contact me: http://www.flickr.com/​photos/exorimadreamer/ (external link)
www.infinite-garage.com (external link)

  
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SteveInNZ
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May 29, 2012 22:06 |  #4

What are the settings, etc that you've used to get each of those shots. It's pretty hard to make suggestions from what you've provided.


"Treat every photon with respect" - David Malin.

  
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IMADreamer
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May 29, 2012 22:49 |  #5

Gee can't you guys just read my mind? haha

ok top pic was F/5.6, 30 second exposure, ISO 3200, 18mm

second one was 10 stacked images that were F 1.8, 50mm, ISO 1600 4 dark frames


Jason: 60d user. My flicker page feel free to friend or contact me: http://www.flickr.com/​photos/exorimadreamer/ (external link)
www.infinite-garage.com (external link)

  
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j4cub
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May 30, 2012 09:54 |  #6

gewb wrote in post #14503318 (external link)
Start with location. Go to:

http://cleardarksky.co​m/csk/ (external link)

Thank you, I found a reporting site close to me. I'll try it out early tomorrow morning to see how close their prediction is.


Who's mom kidding, I don't see any electricity in there.

  
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SteveInNZ
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May 30, 2012 16:02 |  #7

Just as a starting point for the first one, you're best to start with the lens wide open and then stop down, only if you have a reason to do so. ie. distortion at the edges. Trying to find a sweet spot for the lens is fine if you're doing normal photography (eg 1/500 shutter) but with astro stuff, throwing another stop or two into a 30 second exposure brings other problems into play.

This is what I would do in Photoshop for a quick look at what you've got with your stack. If the file is 32bit, do a straight conversion to 16bit. Crop away that black border from the stack alignment.
Levels so that the histogram just touches at either end. The important bit is a non-linear stretch in curves by grabbing the curve and moving the control point to something like Input=57, Output=120. It's not so much the numbers but the shape of the curve. It's important that the curve doesn't flatten out at the top (clipping). Repeat both the levels and the non-linear curve steps. You may need to do a color balancing step and then try the levels and curves again.
Try the same approach with your first shot and see what you come up with.


"Treat every photon with respect" - David Malin.

  
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j4cub
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May 30, 2012 19:43 |  #8

IMADreamer wrote in post #14503041 (external link)
I've tried and tried to get this right but I just can't seem to do it. It could be there is too much light pollution where I'm at or I just stink at this but whether I'm stacking or doing a single exposure it just doesn't seem to come out very well. Any advice would be greatly appreciated.

I feel your pain. We're both at about the same place. I think that your second image has some hidden stuff in it. I'm having some real problems with PP in DSS, some guys know how to work it, but I don't. Initially I got no where with Canons DPP but I think that I may be making some in-roads into it. Regardless of what others may say I don't think that there is anything intuitive about DPP. I'm a little leery about posting my attempts at the MilkWay.

Tim


Who's mom kidding, I don't see any electricity in there.

  
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Milky Way pictures turning out poor. Advice please
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