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  1. Galleries
  2. »
  3. Astrophotography
  4. » Night of San Lorenzo

 
Night of San Lorenzo...

Notturne

View gallery (3 photos)

Night of San Lorenzo sent on August 12, 2012 (16:03) by Alex833. 8 comments, 898 views.

, 30 sec f/4.5, ISO 1600, tripod.

Prima prova di Star trails nella notte di San Lorenzo. Unione di 85 foto con posa di 30sec. Graditi commenti e critiche.





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avatarsenior
sent on August 12, 2012 (17:30) | This comment has been automatically translated (show/hide original)

Nice try I really like the composition and colors!

avatarjunior
sent on August 13, 2012 (9:22) | This comment has been automatically translated (show/hide original)

The effect is nice although three things do not convince me 100%:

1) tracks have gaps. I excluded those shots at the cost of having a smaller track
2) I believe that the search for the contrast you did burn all the tracks with the final effect that no star has kept the color. So you've lost 50% of the beauty of the star trail. Try to review the DP and push yourself as long as you do not touch the value of 245 245 245 on the track brighter. Paradoxically shooting stars fade into the background.
3) the sky background is very noisy and although you took at 1600 ISO it should not be with 85 shots. You pulled the unsharp mask?

Finally valorizzerei more clouds in bassso heating of yellow light.
hello

avatarjunior
sent on August 13, 2012 (10:55) | This comment has been automatically translated (show/hide original)

Personally, it disturbs me that the stars UNDER see the clouds ..

Of course in 40 min of photos the clouds move, but I would have masked in photoshop the stars or the clouds in order to preserve the "logic" of the photo.

avatarjunior
sent on August 13, 2012 (18:42) | This comment has been automatically translated (show/hide original)

I ask a question as well as I would like to try to take pictures like that ...

But with the program Startrail, if in the foreground had for example a tree or a house or anything else you'd want to put in the composition (not as a black shadow but slightly illuminated), the program goes to add tot sometimes the object in question ? guess so, then it would remain the same or get worse?)

Another question, in your pictures from a photo and the other spent a bit of time to cool the sensor, or shots were continuously?

Thank you very much ...

avatarjunior
sent on August 13, 2012 (22:06) | This comment has been automatically translated (show/hide original)

the program star trail is a cag ..... crazy!
First gesstisce not 16 bits, the second does not have many options etc etc. ..
I recommend using PS directly or as starstax which is much more elaborate, but I have to test (I saw a video tutorial). That said, the media program and then sum the first floor will remain as it is but with less noise.
Personally, I have felt the need to remove the frame for more than a second and the sensor has overheated to the point of creating noise. In my gallery you will find the final result of the composition of 60 shots from 1 min separated by a second.
in reality there is a trick. the trick is to make sure that the first or the last shot is made with a sky background brighter. In fact, in this situation the bottomsky you'll get a signal / noise ratio higher (the sky is not dark) and Lighten mode will replace the dark sky background generated during the star trail actually eliminating the noise.

hello

avatarjunior
sent on August 14, 2012 (17:30) | This comment has been automatically translated (show/hide original)

Thanks to all of the passage and comments.
@ Integra Photonature thanks.
@ Ildiora grazzie advice.
The colors I have intentionally kept cool while shooting because there were no less than 8 °, while the union have made starstax I posted a second version combining shots directly in Ps
@ Floyd79
The shots were every 32 sec. so between shots and the other went 2 seconds.
@ Daysleeper
In the second version I posted I tried not to have the union of the clouds

avatarjunior
sent on August 16, 2012 (9:05) | This comment has been automatically translated (show/hide original)

I saw the other pictures and no longer the immediate feeling of "something is wrong". :-P
Even the warmer light on the clouds seem better.
On the issue of shutter speed: you used an intervalometer and 30s have set the shutter on the machine?
In theory, if imposed 32 seconds between shots of "30" seconds and the other, does not pass at all time between one and the other as the shot from 30s in reality is of 32 seconds.
In any case, from the evidence I have seen around, there seems to be a problem continuous shooting (but it is required to do a single-shot of millemila seconds, but for the rendering of the image rather than the sensor).

@ Ildiora: with photosop you can automate the process of joining multiple images?
how gestirebbe dark frames?
Then I'm not sure you picked up on the makeup of the sky brighter to remove the noise just lighten a photo in PP, make one with a longer time or other, to have a real advantage, you have to take a picture when the sky is still blue and not really black? :-/

avatarjunior
sent on August 16, 2012 (19:17) | This comment has been automatically translated (show/hide original)

you can do just registare the union of 5 photos with Lighten blend mode and then apply it to everything else. you n rows of 5 shots that you can combine in the same way.
I suggest you do the photo blue hour when the sky is black but not entirely and leave the rest unchanged. For dark frame ... I will not be cured but can subtract the function to calculate the edit menu I think.
For the color ... if you deprive yourself of why a fraccia to your bow?
hello


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