RCE Foto

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WR-134...

Nebulose

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WR-134 sent on July 12, 2024 (19:47) by Giancarlo Melis. 32 comments, 2367 views.  [editors pick] [retina]

La stella di Wolf-Rayet 134 (la "piccola" stellina al centro della nebulosità blu), distante da noi quasi 6.000 anni luce. E' una stella 400.000 (quattrocentomila) volte più luminosa del sole, anche se è grande "appena" 5 volte tanto, La sua temperatura superficiale è di circa 63.000°C. E' circondata da una flebile nebulosità dovuta all'ossigeno doppiamente ionizzato (blu) che si staglia immergendosi nel classico rosso dell'idrogeno ionizzato, tipico delle nebulose ad emissione. Questa è stata senza dubbio l'elaborazione più difficoltosa fra tutte quelle fatte finora. La nebulosità blu è molto debole e ho dovuto stirare l'istogramma fino all'eccesso. L'immagine è il risultato dell'integrazione di 30 scatti da 10sec ciascuno, eseguiti per non mandare in saturazione le stelle, a causa del rapporto focale veloce (f/2) e la gamma dinamica non eccelsa della camera di ripresa, e da 164 scatti da 120 sec. ciascuno per la nebulosità. Siamo a circa 5 ore e mezza di integrazione (ma a f/2 e sotto un cielo abbastanza buio). Strumentazione usata: Celestron RASA 8, Camera ASI 138 MC-Pro e filtro a doppia banda stretta IDAS NBZ.


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avatarsupporter
sent on August 08, 2024 (12:11) | This comment has been automatically translated (show/hide original)

Wonderful execution!
Congratulations
Luca

avatarsenior
sent on August 08, 2024 (12:30) | This comment has been automatically translated (show/hide original)

Eye in the sky. Fantastic.

avatarjunior
sent on August 08, 2024 (12:38) | This comment has been automatically translated (show/hide original)

Remarkable for its realization and explanation, as always.

avatarsenior
sent on August 08, 2024 (13:05) | This comment has been automatically translated (show/hide original)

The sincerest congratulations for the shot and the work you have done.
Very good Giancarlo
Ciao
ermanno

avatarsenior
sent on August 08, 2024 (13:43) | This comment has been translated

Marvelous, congrats

avatarsenior
sent on August 08, 2024 (14:38) | This comment has been translated

Congratulations!

avatarsenior
sent on August 08, 2024 (14:47) | This comment has been automatically translated (show/hide original)

Wonderful. The caption makes it clear how much time and expertise are needed for these results.

avatarsenior
sent on August 08, 2024 (22:59) | This comment has been automatically translated (show/hide original)

You are too good Giancarlo. Your photos are beautiful. Many congratulations ;-)

avatarsenior
sent on August 09, 2024 (7:32) | This comment has been automatically translated (show/hide original)

Nothing short of gorgeous and rightly awarded with an editor's pick. Bravo and congratulations also for the crazy work behind its realization.

avatarjunior
sent on August 09, 2024 (11:54) | This comment has been automatically translated (show/hide original)

Hi Giancarlo, but if you want to start from scratch with specific and basic equipment to take similar shots, but also without reaching distant galaxies, and without looking for top of the range, what order of expense should you count on?

avatarsenior
sent on August 09, 2024 (12:44) | This comment has been automatically translated (show/hide original)

I thank all of you again.
@Reallyfly
We need to understand what is meant by "similar shots".
Astrophotography is the bane of the wallet...

avatarjunior
sent on August 09, 2024 (17:34) | This comment has been automatically translated (show/hide original)

@Giancarlo
we say to start photographing the planets of our galaxy and see them well in detail


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