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The moon...

AstroPh

View gallery (3 photos)

The moon sent on August 20, 2012 (12:43) by 7michele7. 5 comments, 583 views.

at 105mm, 8 sec f/5.6, ISO 100, tripod.


View High Resolution 14.2 MP  



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avatarjunior
sent on August 23, 2012 (22:01) | This comment has been automatically translated (show/hide original)

The photo is very moving and perhaps TA does not have the maximum yield. evidence with mirror lock snap auto2sec. or remote control iso 400 and open at least f12/14 in Manual and shutter speed will adjust between i1/15 up based on what you see on the display.
Hello

avatarsenior
sent on August 23, 2012 (22:06) | This comment has been automatically translated (show/hide original)

Why f/12-14? And the diffraction?
Better to shoot at room temperature and correct aberrations in pp and sharpen or, in a very bright subjects like the moon (although shown here for the shaded part) with the best possible combination lens / aperture / sensor.
Right for the times, what sense does it expose for 8 seconds instead of lifting a bit 'iso?
And if the intent was to expose the illuminated part of the moon, even at ISO 100 times could be several times smaller.

avatarjunior
sent on August 23, 2012 (22:26) | This comment has been automatically translated (show/hide original)

7ottica has a stabilizer reading the tripod better turn it off so as not to blur due to a stabilization attempts.
But these are the parameters that I use and quite questionable.

avatarjunior
sent on August 24, 2012 (13:46) | This comment has been automatically translated (show/hide original)

Thank you both xi advice, I will do some testing :)

avatarsenior
sent on August 24, 2012 (18:17) | This comment has been automatically translated (show/hide original)

In astrophotography the concept of depth of field is used in a different way from the photograph terrestrial, in the sense that the greater depth of field can be used to correct possible defects of a focusing is not perfect, but still get to f14 does not make sense, already these diaphragms is notable that some diffraction takes away the precious detail, not a drama at these magnifications, it was just about to say.
Anyway, using the widest apertures and higher ISO will avoid those 8 seconds of exposure that may be acceptable in shots with large angles.
At 105mm the maximum time to prevent the move of the moon on aps-c sensor is of the order of the second and a half, not so little ;)


RCE Foto

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