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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 25 Sep 2012 (Tuesday) 20:18
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Official post your Star Trail pictures

 
CraigPatterson
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Jan 26, 2013 23:59 |  #46

igora90 wrote in post #15536543 (external link)
Is there a tutorial somewhere to this technique?

I can tell you how I did it, which is very similar to the technique in the link above:

1. There were 200 30-second frames taken. Set your intervalometer to take them with as little delay between shots as you can get away with.
2. Stack all the frames together in Photoshop in the order in which they were taken.
2. Next step is to look at each layer individually and clone out the airplane trails and any other extraneous garbage. Unfortunately, Arches has a lot of active flight patterns over it. Don't leave out any layers, no matter how bad they may be, because of cars or a bunch of planes. You can't break the star trail.
3. Change the blending method to Lighten on every layer. To save some time, do the next step on each layer at the same time:
4. Set the lowest layer to 1% opacity. To find the correct percentage jump to use each time, divide 100 by the number of layers you have. Thus, if you have 25 layers, each one will go up by 4%. If you have 100 layers, each layer's percentage will go up by 1% from the last. If you've worked your way up the stack from the bottom, you'll see no effect until you change the last layer, then the whole thing will snap into view.
5. You may need to take care of the landscape separately, but I didn't, because passing headlights lit up various places nicely throughout the stack.
6. Don't use any noise reduction, either in camera or later on. layering in Lighten mode will smooth out the noise.

By the way, take more pics than you think you'll use. That will give you some leeway when constructing it for the best visual effect. If there are a LOT of stars, you'll end up with a big blotchy mess if you use too many frames, so you may end up either darkening the whole thing or using fewer frames. I don't recall exactly how many I ended up with.


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cyberon
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Jan 27, 2013 05:29 |  #47

Silverwolfpup wrote in post #15046533 (external link)
Oh wow this is just beautiful, What time did you start with the nice blue backdrop in the sky ? And 40s a shot did you have a invalmeter switch. Thanks for sharing

If you stay long enough, you'll catch it at day break! :lol:


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jannefoo
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Jan 28, 2013 12:40 |  #48

IMAGE: http://farm9.staticflickr.com/8223/8398424100_b7c9540dcf_b.jpg
IMAGE LINK: http://www.flickr.com/​photos/jannefoo/839842​4100/  (external link)

my flickr (external link) | blog about panoramic photography (external link)

  
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schlagle
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Jan 28, 2013 15:03 as a reply to  @ jannefoo's post |  #49

^^^
Fantastic!


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Todd ­ Lambert
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Jan 28, 2013 15:28 |  #50

Agreed, that is lovely!




  
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JasonMK
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Jan 28, 2013 15:37 |  #51

IMAGE: http://farm9.staticflickr.com/8073/8290334351_c8bb778cca_c.jpg
IMAGE LINK: http://www.flickr.com …s/karampatsos/8​290334351/  (external link)
Startrail December 19, 2012 (external link) by JasonMK™ (external link), on Flickr
Looks like I used about fifty 30 second exposures at f/3.5, ISO 800 @ 18mm (with the kits EF-S 18-55mm)

-JasonMK on Flickr (external link)
1Ds Mark III | 650D | EF 17~40mm 4L | EF-S 18~135 STM | EF 50mm 1.4 | EF 100mm 2.8 USM Macro | Tamron 70~300mm 4.0-5.6 Di VC USD XLD | 430 EX III | 430 EX II | Lowepro SlingShot 100 AW | EF 25 II | PS CC | LR CC

  
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igora90
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Jan 29, 2013 01:40 |  #52

Toxic Coolaid wrote in post #15537170 (external link)
Digging deep into the bookmarks for this one, but here you go:

https://plus.google.co​m …2201404/posts/c​WhbazS996D (external link)

it's possible you could make an ACTION to somewhat automate this,but it will take time

CraigPatterson wrote in post #15538478 (external link)
I can tell you how I did it, which is very similar to the technique in the link above:

1. There were 200 30-second frames taken. Set your intervalometer to take them with as little delay between shots as you can get away with.
2. Stack all the frames together in Photoshop in the order in which they were taken.
2. Next step is to look at each layer individually and clone out the airplane trails and any other extraneous garbage. Unfortunately, DV has a lot of active flight patterns over it. Don't leave out any layers, no matter how bad they may be, because of cars or a bunch of planes. You can't break the star trail.
3. Change the blending method to Lighten on every layer. To save some time, do the next step on each layer at the same time:
4. Set the lowest layer to 1% opacity. To find the correct percentage jump to use each time, divide 100 by the number of layers you have. Thus, if you have 25 layers, each one will go up by 4%. If you have 100 layers, each layer's percentage will go up by 1% from the last. If you've worked your way up the stack from the bottom, you'll see no effect until you change the last layer, then the whole thing will snap into view.
5. You may need to take care of the landscape separately, but I didn't, because passing headlights lit up various places nicely throughout the stack.
6. Don't use any noise reduction, either in camera or later on. layering in Lighten mode will smooth out the noise.

By the way, take more pics than you think you'll use. That will give you some leeway when constructing it for the best visual effect. If there are a LOT of stars, you'll end up with a big blotchy mess if you use too many frames, so you may end up either darkening the whole thing or using fewer frames. I don't recall exactly how many I ended up with.


Thank you very much for your effort, really appreciated! So the amount of used frames depends on the situation how visible the stars are?


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fortisi876
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Jan 29, 2013 22:21 |  #53

Looking in this thread is making me want to be more motivated to get out there some more. I first learned about star trails 2-3yrs ago, I was so psyched I had to try in my backyard....the following were all taken on the same night, really trying to get out of this funk...:(

1)

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: NOT FOUND | MIME changed to 'image/png' | Redirected to error image by ZENFOLIO PROTECTED


2)
IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


3)
IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO



  
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CraigPatterson
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Jan 30, 2013 22:55 |  #54

igora90 wrote in post #15546839 (external link)
Thank you very much for your effort, really appreciated! So the amount of used frames depends on the situation how visible the stars are?

That's correct. If you don't see many stars, you'll want to use more frames. But if you have a wonderful sky filled with stars, you'll end up with a big white blob if you use the same number of frames, so you'll want to use fewer. The downside is that the trails will be shorter, but the upside is that the sky is still filled with interesting objects.

And you're very welcome!


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lerroy
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Feb 02, 2013 07:52 |  #55

[QUOTE=Todd Lambert;15046857]Here'​s two shots from last New Years Eve out in Valley of the Gods in Utah.
The first shot is about an 80 image stack that I pulled from several hundred frames from an all-night timelapse. The second shot is 75 image stack.


IMAGE: http://twilightscapes.com/forums/camp-spin-001.jpg


Hi Todd i love this style of star trails where you can still see the main star and its almost like a trail behind. its looks amazing.

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lerroy
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Feb 02, 2013 07:59 |  #56

Here are some recent ones :)

IMAGE: http://www.jlbphotos.com/storage/star1.jpg

IMAGE: http://www.jlbphotos.com/storage/star2.jpg

IMAGE: http://www.jlbphotos.com/storage/star3.7-2.jpg

IMAGE: http://www.jlbphotos.com/storage/star4.jpg

JLB Photography Website (external link)
5D MKII / 5D MKIII - 17-40L - 85 1.2 L - 50 1.2 L - 70-200 F2.8 L - 100 L 2.8 Macro - 24-70 2.8L - Samyung 14mm 2.8 - 300mm F4 L

  
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fortisi876
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Feb 02, 2013 10:41 |  #57

Beautiful set!! ^^^


Can I possibly be the only person who gets so geographically jealous when looking at some of these images? :lol:

I hope to relocate in about 3yrs when I retire, I pray my next move is at a much more visually interesting locale than my current home. :)




  
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Hulka
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Feb 03, 2013 12:32 |  #58

Nothing great but here was and attempt from a year ago. I just have too much light pollution at the house.


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http://www.flickr.com/​photos/61517977@N03/ (external link)http://www.flickr.com/​photos/61517977@N03/ (external link)

  
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jmarshphoto
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Feb 10, 2013 21:50 |  #59

From Arches NP a few months back. We don't get skies this clear where I live ; ) Really something to behold.

IMAGE: http://farm9.staticflickr.com/8497/8362535538_f10fda9fac_b.jpg
IMAGE LINK: http://www.flickr.com …s/jmarshphoto/8​362535538/  (external link)
WE ARE ALL STARS (external link) by jmarshphoto (external link), on Flickr

http://jmarshphoto.com (external link)
IG @itsjordanindeed

  
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Hulka
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Feb 11, 2013 19:17 |  #60

Here is another attempt for a year ago or so. Again nothing great.


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http://www.flickr.com/​photos/61517977@N03/ (external link)http://www.flickr.com/​photos/61517977@N03/ (external link)

  
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Official post your Star Trail pictures
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