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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 20 Oct 2011 (Thursday) 11:46
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Milkyway nightscapes

 
pdxbenedetti
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Jul 24, 2016 13:05 |  #3271

One from last night, had about 30 minutes to shoot the sky portion between astro twilight and the moon rising, couldn't get all the shots necessary for the whole arch to be in frame. This is at Silver Lake near Brighton, Utah, it's a bortle 6 zone with LOTS of light pollution which makes illumination across the sky very uneven and proper color balancing in post is damn near impossible. I took this same shot last summer and figured I'd retake it again this summer now that I have a better handle on imaging and post-processing (plus better equipment). The meteor/fireball was really cool, it came down as I was taking a foreground shot, it was so slow I could see it rotating as it burned up. I actually stopped the exposure 30 seconds short to make sure I got it, thankfully I did and even managed to catch it's reflection (which if you look close becomes this funny squiggly line as it nears the reeds).

It's 12 shots altogether, 5 for the sky, 5 for the foreground, and 2 extra for the reflections. The sky/reflections shots are 2.5 minute exposures, ISO 400, f2.5, the foreground exposures are 2 minutes, ISO 800, f2.5. Taken with my Nikon D600 and Rokinon 24mm f1.4 lens on a Star Adventurer tracking mount.


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Maureen ­ Souza
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Jul 24, 2016 14:09 as a reply to  @ pdxbenedetti's post |  #3272

It is crooked.... ;-)a


Life is hard...but I just take it one photograph at a time.

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pdxbenedetti
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Jul 25, 2016 14:10 |  #3273

Maureen Souza wrote in post #18076351 (external link)
It is crooked.... ;-)a

Hehe, this one brought a smile to my face.

Last night I decided to head up to a place I had been planning on shooting all year, had high hopes for it based on dark sky maps, turns out I was wrong lol. There's a decent sized town called Heber (Utah) about 10 miles away, I didn't think the light pollution from it would be extensive as it was. On top of that the campground at this place had some bathrooms with RIDICULOUSLY bright orange lights. This was about the best I could get out of the shots having to deal with all that.

14 images total for this one, 5 for the foreground, 9 for the sky. Foreground shots are 2 minute exposures at ISO 400 and f2.5. Sky shots are 2.5 minute exposures at ISO 400 and f2.5. All taken with my Nikon D600 and Rokinon 24mm f1.4 on the Star Adventurer tracking mount.


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ptcanon3ti
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Jul 25, 2016 15:34 |  #3274

pdxbenedetti wrote in post #18077272 (external link)
Hehe, this one brought a smile to my face.

Last night I decided to head up to a place I had been planning on shooting all year, had high hopes for it based on dark sky maps, turns out I was wrong lol. There's a decent sized town called Heber (Utah) about 10 miles away, I didn't think the light pollution from it would be extensive as it was. On top of that the campground at this place had some bathrooms with RIDICULOUSLY bright orange lights. This was about the best I could get out of the shots having to deal with all that.

14 images total for this one, 5 for the foreground, 9 for the sky. Foreground shots are 2 minute exposures at ISO 400 and f2.5. Sky shots are 2.5 minute exposures at ISO 400 and f2.5. All taken with my Nikon D600 and Rokinon 24mm f1.4 on the Star Adventurer tracking mount.

QUOTED IMAGE

Thats a beauty. :)

You have 5 foreground shots and 9 sky shots. How do you equalize them to fit the same frame?


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pdxbenedetti
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Jul 25, 2016 15:46 |  #3275

ptcanon3ti wrote in post #18077350 (external link)
Thats a beauty. :)

You have 5 foreground shots and 9 sky shots. How do you equalize them to fit the same frame?

The sky and foreground were both roughly the same width (5 frames wide), I just took a few extra of the sky to make sure I got the whole arch. I ended up downscaling the sky just a little bit, maybe 1000 pixels (total width is ~16000 pixels) to get the blurry portions of the foreground in the sky shots to align with the crisp portions of the actual foreground shots.


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pdxbenedetti
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Post edited over 3 years ago by pdxbenedetti.
     
Jul 25, 2016 18:21 |  #3276

One more for shits and giggles, this one from the bridge, the core had aligned nicely so I setup everything again and snapped the shots before the moon came up.

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Jul 26, 2016 04:29 |  #3277

pdxbenedetti wrote in post #18077489 (external link)
One more for shits and giggles, this one from the bridge, the core had aligned nicely so I setup everything again and snapped the shots before the moon came up.

QUOTED IMAGE


While i think this photo is outstanding, and maybe im wrong, but i would love to see this with a cooler white balance. But even like this, composition everything is just beautiful.

Was this a separate exposure for the foreground?


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pdxbenedetti
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Jul 26, 2016 05:32 |  #3278

davidfarina wrote in post #18077855 (external link)
While i think this photo is outstanding, and maybe im wrong, but i would love to see this with a cooler white balance. But even like this, composition everything is just beautiful.

Was this a separate exposure for the foreground?

The problem is that with a cooler color balance the picture turns into a purplish mess thanks to the extreme light pollution from the town over the hill on the right and the really bright orange lights on the left. I tried like hell to get rid of as much of the orange/red cast as possible, but it just left weird colors when it went any further than this.

Yup, it's two separate exposures, one for the foreground and one for the sky. Both are 2.5 minute exposures at f2.5, foreground was ISO 800 and sky was ISO 400, basically just took the foreground exposure, then aimed the camera at the sky and turned on the tracking mount and took the sky exposure at a lower ISO.


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davidfarina
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Jul 26, 2016 05:56 |  #3279

pdxbenedetti wrote in post #18077880 (external link)
The problem is that with a cooler color balance the picture turns into a purplish mess thanks to the extreme light pollution from the town over the hill on the right and the really bright orange lights on the left. I tried like hell to get rid of as much of the orange/red cast as possible, but it just left weird colors when it went any further than this.

Yup, it's two separate exposures, one for the foreground and one for the sky. Both are 2.5 minute exposures at f2.5, foreground was ISO 800 and sky was ISO 400, basically just took the foreground exposure, then aimed the camera at the sky and turned on the tracking mount and took the sky exposure at a lower ISO.

Yeah its difficult to fix the yellow casts.

Nevertheless it looks very clean and very nice


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Jul 26, 2016 09:34 |  #3280

pdxbenedetti wrote in post #18077880 (external link)
davidfarina wrote in post #18077855 (external link)
While i think this photo is outstanding, and maybe im wrong, but i would love to see this with a cooler white balance. But even like this, composition everything is just beautiful.

Was this a separate exposure for the foreground?

The problem is that with a cooler color balance the picture turns into a purplish mess thanks to the extreme light pollution from the town over the hill on the right and the really bright orange lights on the left. I tried like hell to get rid of as much of the orange/red cast as possible, but it just left weird colors when it went any further than this.

Yup, it's two separate exposures, one for the foreground and one for the sky. Both are 2.5 minute exposures at f2.5, foreground was ISO 800 and sky was ISO 400, basically just took the foreground exposure, then aimed the camera at the sky and turned on the tracking mount and took the sky exposure at a lower ISO.

Would you mind posting both before photos? I would like to see the before and after (I have seen the after and it is great!)


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pdxbenedetti
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Jul 26, 2016 15:10 |  #3281

Inspeqtor wrote in post #18078026 (external link)
Would you mind posting both before photos? I would like to see the before and after (I have seen the after and it is great!)

This is the unedited foreground shot of the bridge:



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This is the unedited shot of the sky:



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Jul 27, 2016 00:00 |  #3282

pdxbenedetti wrote in post #18077272 (external link)
Hehe, this one brought a smile to my face.

Last night I decided to head up to a place I had been planning on shooting all year, had high hopes for it based on dark sky maps, turns out I was wrong lol. There's a decent sized town called Heber (Utah) about 10 miles away, I didn't think the light pollution from it would be extensive as it was. On top of that the campground at this place had some bathrooms with RIDICULOUSLY bright orange lights. This was about the best I could get out of the shots having to deal with all that.

14 images total for this one, 5 for the foreground, 9 for the sky. Foreground shots are 2 minute exposures at ISO 400 and f2.5. Sky shots are 2.5 minute exposures at ISO 400 and f2.5. All taken with my Nikon D600 and Rokinon 24mm f1.4 on the Star Adventurer tracking mount.

QUOTED IMAGE

Beautiful picture, I have to ask what software program you are using to merge all the shots in to one




  
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Jul 27, 2016 01:37 |  #3283

pdxbenedetti wrote in post #18078313 (external link)
This is the unedited foreground shot of the bridge:

thumbnail
Hosted photo: posted by pdxbenedetti in
./showthread.php?p=180​78313&i=i249533876
forum: Astronomy & Celestial


This is the unedited shot of the sky:

thumbnail
Hosted photo: posted by pdxbenedetti in
./showthread.php?p=180​78313&i=i224528870
forum: Astronomy & Celestial

Thank you

I 'tried' to merge them together with Photoshop Elements 13, but no success :-(

You did a marvelous job!


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pdxbenedetti
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Jul 27, 2016 05:41 |  #3284

kukulkan wrote in post #18078729 (external link)
Beautiful picture, I have to ask what software program you are using to merge all the shots in to one

Thanks, I use PTGui to stitch the rows of shots (sky or foreground) and then use Photoshop to merge the sky and foreground together.

Inspeqtor wrote in post #18078775 (external link)
Thank you

I 'tried' to merge them together with Photoshop Elements 13, but no success :-(

You did a marvelous job!

Ya, it's tough, definitely taken me a long time to figure out how to merge the two as seamlessly as possible. The hardest parts are trees or anything with gaps, the blurry portions from a sky shot are bigger and if you don't merge them right those regions become really visible because of light differences.


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Jul 27, 2016 07:52 |  #3285

pdxbenedetti wrote in post #18078832 (external link)
kukulkan wrote in post #18078729 (external link)
Beautiful picture, I have to ask what software program you are using to merge all the shots in to one

Thanks, I use PTGui to stitch the rows of shots (sky or foreground) and then use Photoshop to merge the sky and foreground together.

Inspeqtor wrote in post #18078775 (external link)
Thank you

I 'tried' to merge them together with Photoshop Elements 13, but no success :-(

You did a marvelous job!

Ya, it's tough, definitely taken me a long time to figure out how to merge the two as seamlessly as possible. The hardest parts are trees or anything with gaps, the blurry portions from a sky shot are bigger and if you don't merge them right those regions become really visible because of light differences.

Do you use full Photoshop or something else?


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