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  1. Galleries
  2. »
  3. Astrophotography
  4. » m109 Ursa Major

 
m109 Ursa Major...

Astrofotografia 2

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m109 Ursa Major sent on June 06, 2016 (10:50) by Gp70. 2 comments, 845 views.

Due serate serene come non ce n'erano da mesi.... Messier 109 è una bellissima galassia a spirale barrata nella costellazione dell'Orsa Maggiore distante circa 55 milioni di al. Molti i dettagli visibili in questa immagine dove sono riuscito a mettere in evidenza anche alcune irregolarità profonde della barra centrale del nucleo. Molte anche le galassie di fondo che si intravedono tutt'intorno ma purtroppo anche un certo traffico di satelliti e aerei che hanno lasciato le loro tracce :-/ Ciao


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avatarjunior
sent on June 07, 2016 (12:56) | This comment has been automatically translated (show/hide original)

Beautiful image Giampaolo.
If I can give you my opinion, there are two flaws.
The first is the noise in the picture, which can be largely obviated using Stretching logarithmic instead of the DDP in MaxIm, or the Histogram transormation in PixInsight, which returns a very clean image.
The second is probably due to the dark who have left completely blacks signs during subtraction. This too is something easily ovviabile of dark redoing "updated."
The signal is everything and it can come out an excellent image.

avatarsenior
sent on June 07, 2016 (16:50) | This comment has been automatically translated (show/hide original)

Thanks considers very interesting and helpful .... I will apply your suggestions, although I do not know PixInsight.
Greetings
gp


RCE Foto

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