RCE Foto

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  1. Galleries
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  3. Astrophotography
  4. » Untitled Photo

 
Untitled Photo...

Astrofoto

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Untitled Photo sent on August 17, 2011 (12:37) by Valerio74. 8 comments, 2654 views.

, Posa B f/3.5, ISO 400, tripod.

Polveri nello Scorpione. Canon Eos 300D, Leica Apo Telyt 180mm f/3,4 utilizzato a tutta apertura. 400 ISO, 80 minuti di posa complessiva





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avatarjunior
sent on August 17, 2011 (12:45) | This comment has been automatically translated (show/hide original)

I remain fascinated by these shots ... I can hurt to judge technical level ad but in terms of taste, I make my complikenti

avatarjunior
sent on August 18, 2011 (18:54) | This comment has been automatically translated (show/hide original)

SPECTACULAR!!
But 80 minutes with a single click??
And with what frame you chased??

Compliments
hello

avatarsenior
sent on August 18, 2011 (22:08) | This comment has been automatically translated (show/hide original)

Thanks, I'm 8 shots for 10 minutes each. The frame is all about Takahashi EM-10, without autoguiding

avatarsenior
sent on August 21, 2011 (21:46) | This comment has been automatically translated (show/hide original)

Very beautiful! Without autoguiding, then driving with grid? I would have a little more saturated colors, especially the stars are a bit 'pallidine. There is a red glow above Antares, next to the left of the globular, probably a reflection of Antares itself. Between the upper imagine that you have developed the poses in order to keep a very low brightness of Antares, which usually shoots a lot.

Hello!
Clear


avatarsenior
sent on August 22, 2011 (12:41) | This comment has been automatically translated (show/hide original)

Hello Clare,
thanks for the comment. Without autoguiding I mean I did not do corrections, I left the mount on without control in any way the pursuit entrusting the mechanical precision of the same. For Antares I have not done any work containment was already quite "contained" of his own. For colors I would need more poses, otherwise it falls out too much noise when I try to saturate further. See you soon

V

avatarjunior
sent on March 07, 2012 (17:29) | This comment has been automatically translated (show/hide original)

and therefore this' pose a total of 80 minutes at 400 iso, do you think with the 5d mark iii 10 minutes of exposure in ISO 3200 you can expect a similar result in equality of all other conditions? ps beautiful colors, beautiful star point, congratulations.

avatarsenior
sent on March 08, 2012 (8:46) | This comment has been automatically translated (show/hide original)

Thanks Coprolog
do you think the 5d mark iii 10 minutes of exposure in ISO 3200 you can expect a similar result in equality of all other conditions?
In the classical concept of photography, the triplet shutter speed, aperture, sensitivity are equivalents, but in this kind of picture, in which the subject is very weak, physically hold open the shutter for 80 minutes allows a greater number of photons to go to excite the photoreceptors of the sensor, for which the equivalence, according also In my experience, it is perfectly valid. However, you must consider that the 5D mk III sensor would provide a much more modern and, I presume, with an efficiency better than that of quantum sensors that I used, so it could offset some of the smaller number of incident photons for pose less. I hope I explained.

avatarjunior
sent on March 08, 2012 (18:49) | This comment has been automatically translated (show/hide original)


yes, perfectly.
thanks


RCE Foto

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