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  1. Galleries
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  3. Astrophotography
  4. » The Great Orion Nebula

 
The Great Orion Nebula...

Astrofotografia

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The Great Orion Nebula sent on October 29, 2015 (9:34) by Marcojetflyer. 6 comments, 2094 views. [retina]

Posa B f/4.5, ISO 1600, tripod.

Luogo della ripresa: Lignan (Aosta) Telescopio: Teleobiettivo Nikon Nikkor Ai 300mm ED f/4.5 Non-IF Montatura: Celestron CG5 Camera: Canon 20Da Filtri: Nessun filtro Guida: Senza guida Pose: 20 pose da 8 sec - 15 sec - 30 sec - 1,5 min (totale 80 pose) Elaborazione: Deep Sky Stacker e Photoshop Note: Calibrazione (con Darks / Flats / Flats darks / Bias) e stacking con Deep Sky Stacker. Elaborazione cosmetica con Photoshop e Noel Carboni Astro Actions. La fotografia finale è una composizione HDR per rendere visibili le stelle del Trapezio senza sovraesporre la zona al centro di M42. Data scatto: 11/10/2015



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user28347
avatar
sent on October 29, 2015 (10:19) | This comment has been automatically translated (show/hide original)

I is making me want to try with my 300f4 and mount it on the telescope that serves as a guide with 30 seconds single shot, what do you think? I am fantastic

avatarsupporter
sent on October 29, 2015 (11:52) | This comment has been automatically translated (show/hide original)

Bravo, very nice, good, hello

avatarsenior
sent on October 29, 2015 (14:15) | This comment has been automatically translated (show/hide original)

me is making me want to try with my 300f4 and mount it on the telescope that serves as a guide with 30 seconds single shot, what do you think? Are fantastic


Even there I'm thinking to much ... I just do not know how to fit it all !! -D Aiutino ??? -D

user28347
avatar
sent on October 29, 2015 (14:49) | This comment has been automatically translated (show/hide original)

I am made to build a port to attach lens on the telescope, or buy astroinseguitore from 350 €

avatarsenior
sent on October 30, 2015 (20:28) | This comment has been automatically translated (show/hide original)

Beautiful, congratulations

avatarjunior
sent on November 16, 2015 (18:51) | This comment has been automatically translated (show/hide original)

Hello to all,
I apologize for the delay in the answer, absolutely not being rude but in recent days I have not attended the site.
Thank you all for the appreciation and step to give you some more information :-)
I think the Canon 300 f4 L is very good for this type of photographs, 30 seconds of exposure to a sky urban or suburban (with light pollution) can be few but ... does not harm groped!
If your mount tracks well placed in the order of 1-1.5 minutes could do well.
The maximum length of pose useful when you reach the 'mountain' histogram is detached from the black point of a 10% about the tonal range available. Besides this time you will get a clearer sky background but you will improvechin on the subject again.
I suggest making several tens of single images (at least 40 to 50, the more the better ;-)) and use DSS, or Deep Sky Stacker (free program) to the 'stacking' or the synthesis of 50 poses in a picture single.
DSS is able to handle tens of images in a very reliable way even if the processing time can be a bit 'long.
I hope to be a help, are always available to answer questions or curiosity.
Greetings
Marco




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