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  1. Galleries
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  3. Astrophotography
  4. » Velo in the Swan

 
Velo in the Swan...

Astrofoto

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Velo in the Swan sent on August 27, 2013 (11:19) by Valerio74. 17 comments, 1947 views. [retina]

Posa B f/6.3, ISO 800, tripod.

Ripresa ad inizio agosto (2013) con un telescopio Vixen Visac VC200L e Canon Eos 450D. Sono 12 pose da 600s poi problemi tecnici non mi hanno permesso di andare oltre e uindi l'integrazione non è moltissima, e si vede dal rumore di fondo ancora un po' presente



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user15434
avatar
sent on August 27, 2013 (11:26) | This comment has been automatically translated (show/hide original)

Beautiful beautiful beautiful!
Finally a photo deep after all we have left to take from astroinseguitori:-D.
By the way, with that telescope was taken? I see that the noise is fully under control ... ISO to those you took? Cooled chamber?
A salutone and again congratulations,
David

user15434
avatar
sent on August 27, 2013 (11:27) | This comment has been automatically translated (show/hide original)

... here, not yet present in the shooting data. Now all ok ;-)
Ciaux,
David

PS: the noise ... of which you complain! :-D

avatarsenior
sent on August 27, 2013 (11:34) | This comment has been automatically translated (show/hide original)

Thank you!
Yes, now there should be all the data.
The focal length of recovery is equal to 1280mm, which is the most Visac its original reducer at f / 6.4

user15434
avatar
sent on August 27, 2013 (11:39) | This comment has been automatically translated (show/hide original)

Beautiful focalona and beautiful instrument ... that allowed you to resume the filaments of the Veil in a masterly manner.
The 450D is not so cool wow!
I would not put your finger on it but I'm curious about your sentence ... What happened to the 13th installation: fconfuso:
Hello and see you soon,
David

avatarsenior
sent on August 27, 2013 (11:56) | This comment has been automatically translated (show/hide original)

I confirm, the 450D is not at all cool! and in fact brings out quite a bit of noise in the individual poses, but then if I do a little better '. The tool I really like, well corrected with a focal length that I find ideal for photographing small objects in the sky with amateur frames.

What happened to the 13th pose Confused
And 'output in the mountains was a bit' improvised and arrived at the scene I saw the 12V adapter to power the Canon no longer worked. :-( I could only shoot with the only battery that I had with me. So only 12 poses and without even the dark and flat, then the battery is dead. I settled for dark and flat using those made in the year before same shooting conditions

avatarsenior
sent on August 27, 2013 (14:30) | This comment has been automatically translated (show/hide original)

Fabulous! The noise does not seem excessive, only one or two pixelini red wishing you could clone.

A doubt on dark and flat "dated" for the dark could also be there, as long as the temperature is the same (or almost) but for the flat if you change too much over the fire, the orientation of the room and if the lens is not is no longer the same dust than a year ago, could not give problems? The question is only theoretical because problems in your photo does not seem to see, but I always knew that the flat is done without changing anything at all in the optical system, so it would be better to do it right before or right after the series of shots.

hello!
Chiara

avatarsenior
sent on August 27, 2013 (14:30) | This comment has been automatically translated (show/hide original)

Fabulous! The noise does not seem excessive, only one or two pixelini red wishing you could clone.

A doubt on dark and flat "dated" for the dark could also be there, as long as the temperature is the same (or almost) but for the flat if you change too much over the fire, the orientation of the room and if the lens is not is no longer the same dust than a year ago, could not give problems? The question is only theoretical because problems in your photo does not seem to see, but I always knew that the flat is done without changing anything at all in the optical system, so it would be better to do it right before or right after the series of shots.

hello!
Chiara

avatarsenior
sent on August 27, 2013 (14:49) | This comment has been automatically translated (show/hide original)

Great Valerio nice picture, too bad that you've cut the last part of the nebula, congratulations! Hello
Skender!

avatarsenior
sent on August 27, 2013 (14:50) | This comment has been automatically translated (show/hide original)

Fantastic!

avatarsenior
sent on August 27, 2013 (16:00) | This comment has been automatically translated (show/hide original)

Thank you all!

For the tail of the nebula, I thought I take less with almost 1300mm focal length, and having little autonomy, I have tried to capitalize on the energy fornitami from the only battery that I had no time to lose torppo frame to perfection. This time it went well, the next I am committed more ;-) 8-)

A question about dark and flat "dated" for the dark could also be there, as long as the temperature is the same (or almost) but for the flat if you change too much over the fire, the orientation of the room and if on the lens there is no longer the same powder than a year ago, could not give problems? The question is only theoretical because problems in your photo does not seem to see, but I always knew that the flat is done without changing anything at all in the system optical, so it would be better to do it right before or right after the series of shots.

You are absolutely right. In the dark I saw that those taken a year earlier by the same observing site differed by 2-3 ° C, of ??course, camera, shutter speed and sensitivity were the same. Luckily I have standardized shooting astronomical:-P :-)
For the flat should be made right with the instrumentation esatamente as was used during the filming. However, mounting the camera in the same position, at least vignetting can correggermela piuttosot fine. Nothing can prevail against the dust ... but I try to keep the optics and the sensor clean. Of course, to have a little 'more energy I would have done the flat last Saturday night just after the astronomy as expected ;-)

avatarsenior
sent on August 27, 2013 (17:27) | This comment has been automatically translated (show/hide original)

Am I wrong or you also have the D800? If yes, how come you did not use that?

avatarsenior
sent on August 27, 2013 (20:04) | This comment has been automatically translated (show/hide original)

Am I wrong or you also have the D800? If so, why did not you use that??

Two main reasons:
- In the meantime I shot this nebula, the D800E was photographing another area of ??the sky with another setup
- For the nebulae that emit in the H-alpha, with a reflex amended as my 450D, or with a filter on the sensor that passes better the wavelength around 656nm, better results are obtained in a shorter integration time

avatarsenior
sent on August 27, 2013 (21:35) | This comment has been automatically translated (show/hide original)

Great photo Valerio:-D

avatarsenior
sent on August 27, 2013 (22:03) | This comment has been automatically translated (show/hide original)

I assumed only the second, but not seeing it written in the caption did not know :)

avatarjunior
sent on August 28, 2013 (1:01) | This comment has been automatically translated (show/hide original)

Really good and well prepared, I would say a high resolution of the veil :-)

avatarsenior
sent on August 28, 2013 (10:22) | This comment has been automatically translated (show/hide original)

Thanks Fabio

avatarsenior
sent on March 30, 2019 (14:33) | This comment has been automatically translated (show/hide original)

Nice shot, MARIO


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