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  1. Galleries
  2. »
  3. Astrophotography
  4. » Five hours in the sky

 
Five hours in the sky...

Astrofotografia

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user15434
avatar
sent on September 09, 2012 (11:47) | This comment has been automatically translated (show/hide original)

Hello Clare,
but how many stars you managed to resume wow!? Congratulations, great image!

avatarsenior
sent on September 09, 2012 (13:32) | This comment has been automatically translated (show/hide original)

Hello Clare, nice rotation ..

avatarjunior
sent on September 09, 2012 (19:03) | This comment has been automatically translated (show/hide original)

Hello Clare, a question:
but the poses can also be performed automatically with the burst or you've been there 5 hours maybe even with the mirror up function?

avatarjunior
sent on September 10, 2012 (9:13) | This comment has been automatically translated (show/hide original)

I do not know if that is what you are looking for but you may want to take a look cmq.

www.rubbingpixels.com/twlight-hour-% E2% 80% 93-photographing-star-trails-and-static-stars /

is a photo that I really like. I valorizzerei the dynamics of color on the trail trying to copy what is present on the right side of the frame that do not understand why this has not left where the tracks seem to desaturate.

hello

avatarsenior
sent on September 10, 2012 (12:00) | This comment has been automatically translated (show/hide original)

Clare, your pictures are always a thrill and this is no exception.
The polar effect is almost bursting at the sight of those observing the image ... Compliments.
Mark

user4780
avatar
sent on September 10, 2012 (12:28) | This comment has been automatically translated (show/hide original)

Hello Chiara ... I sincerely these micro-grooves do not see them ... but above all, by comparing these trails with long exposure. with those of other photo does not seem to me to be different or any other imperfections in high esteem!

I have never experienced such long exposures ... I like the photo ... now I would look for some nice close up picture or rocky fill the frame more!

Hello, Daniel!

avatarsenior
sent on September 10, 2012 (14:33) | This comment has been automatically translated (show/hide original)

Thank you all for your comments and suggestions!

@ Fabercom: the poses are automatically with the burst, of course! I attached the remote with the button in locked mode and set the shutter speed to 30 ", then I left there and in the meantime I was busy with the telescope.

@ Ildiora this is not what I'm looking for, but it is an interesting link comuque! In fact, the gap between the individual shots are little known, the effect that bothers me comes out only resizing. On the right side of the image there are the brightest stars and colorful, dates mainly from Cassiopeia and Perseus, it is normal to be so. Also on that side is also the Milky Way, which is not seen in the strip, (individual poses are), but contributes to a sense of greater saturation in the lator the right of the photo.

@ Siamomatticiao: effect "microgroove" I mean that effect you get when you watch a vinyl record, I do not know what an appropriate name. It 'an effect of scaling. You can certainly find some more picturesque landscape element, but here I really wanted the effect of "night": a dark outline and simple it does not attract attention from heaven and give an idea of ??how it was dark. And that night was really dark, no moon, no light pollution ... a dream!

All the best,

Clear


avatarjunior
sent on September 11, 2012 (9:50) | This comment has been automatically translated (show/hide original)

Well the picture you have drawn you and so if you have not used masks and other then it is an optical effect due to the stars but I think mainly the strain ellipse in fact the tracks to the right are separated by darker areas and this may increase the contrast and improves color perception. Personally I would use the command set saturation on red and / or yellow incremntare saturation of cool stars (in the astronomical sense).
how you handled the battery?
hello

avatarsenior
sent on September 11, 2012 (18:55) | This comment has been automatically translated (show/hide original)

I have not used it other filters, I only increased slightly the overall contrast of the picture. The deformation can be seen, of course, but I am convinced that what is known due solely to a differene brightness distribution of stars in different parts of the sky, it is natural and proper to be so. I tried to increase the saturation, but came a mess of colors, these kinds of photos less you touch, the better, in my opinion.
The battery of the 60D is very long-lived, after 5 hours of exposure, I would have still had to make at least that many!

All the best,
Clear


avatarjunior
sent on September 11, 2012 (21:30) | This comment has been automatically translated (show/hide original)

What program did you use? there is usually the appropriate option to smooth the trails, have you tried also with a smart sharpen? might help you.

avatarsenior
sent on September 12, 2012 (9:22) | This comment has been automatically translated (show/hide original)

I used Startrail. The problem I am referring to, however, is not about the small spaces between the wakes due to the time where the camera saves the photo between shots and the other ones you see very little and do not bother me, TIFF 100% perfect. I was not clear in explaining what the problem is: I called effect "microgroove" because it is the visual effect that you notice when you look at a vinyl record (with microgroove) with grazing light and tilt. I do not know the name of "science" of this effect, but as I already mentioned in other posts, there is only resizing the image, even if you look at the tiff at full resolution at full screen. If you look at 100% is perfect. I had some suggestions on how I could solve the problem by resizing steps and changing the settings of resampling.


Clear

avatarjunior
sent on September 12, 2012 (11:05) | This comment has been automatically translated (show/hide original)

Hello kiara,
provided that the interpretation should be respected the author's photo, I probably would have increased the saturation because the maneuver increase the contrast has the effect of darkening the shadows and brightening the lights (typical S-curve) . Now you have a blind spot of the first floor without color (L = 8) and deadlifts between tracks live on tones 3/4 tones. Many stars live on the lights. When you increase the contrast, saturation increases the perception of areas of low brightness and decreases in the high. E 'for this suggested that a recovery of saturation on the stars and an increase in dynamic range by acting on the yellow and a little bit on blue.
I did a test you enclose the following parameters:

yellow tint -7 sat 40, red cyan sat sat +25 +12 +30 blue sat.

You can also retrieve GAMMto dynamic acting on the shadow point with curves and bringing it to 14 since it does not have information between 0 and 14 (obviously in RGB)
hello

avatarsenior
sent on September 12, 2012 (21:43) | This comment has been automatically translated (show/hide original)

Ildiora Thanks, I'll try to apply your values ??in the tiff, which now I have here and see if I like what comes out. Your speech on the loss of saturation in the highlights with the S-curve is absolutely right, there is much in astronomical photos.

a greeting

Clear

avatarjunior
sent on September 14, 2012 (22:05) | This comment has been automatically translated (show/hide original)

Really very beautiful, exaggerated the number of stars that you managed to capture.

avatarsenior
sent on September 15, 2012 (9:54) | This comment has been automatically translated (show/hide original)

Hello Clare,
spectacular result, with a really dark sky (where?). Having made myself a few Startrail, I think the problem you are referring to is created in the image at full resolution resizing to a smaller version for the web. You have to try to change the option of image resizing algorithm. In Photoshop, you find it in the window resizing. There is one specific reductions.

Lorenzo

PS: why not put in ml?

avatarsenior
sent on September 15, 2012 (12:28) | This comment has been automatically translated (show/hide original)

Thanks Lorenzo! The picture was taken in Champorcher (AO). The north is really dark, unfortunately not as the south, still acceptable, and above all for us just an hour or so. Yes, the problem is in resizing, I have to experiment with the settings and even resizing a little 'time.

It 's true, for some' no place in ml, sometimes my messages do not arrive. Now I try!

hello

Clear

avatarsupporter
sent on May 19, 2013 (12:19) | This comment has been automatically translated (show/hide original)

the center of the universe.
fantastic, hello ;-) ;-)

user28347
avatar
sent on August 20, 2013 (14:21) | This comment has been automatically translated (show/hide original)

and the lady,:-P

avatarsenior
sent on October 13, 2013 (17:34) | This comment has been automatically translated (show/hide original)

sci-fi wow wow wow! + + +

avatarjunior
sent on February 21, 2016 (10:50) | This comment has been automatically translated (show/hide original)

oh mama that beautiful, I fell in love!


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