Orion above Lake Landro

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Orion above Lake Landro sent on 26 Novembre 2025 (18:41) by Andrea Curzi. 8 comments, 195 views.

at 17mm, Posa B f/4.0, ISO 1250, tripod.

Uno scatto dello scorso gennaio in una notte a ben -10° passata in camper sul Lago di Landro. Per ottenere questa foto, ho dovuto scattare per circa 2 ore totali di integrazione tra la sessione in RGB e quella in H-Alpha ma ne è valsa la pena! Vi ricordo che sono disponibile per corsi 1to1. www.andreacurzi.it

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19 persons like it: Andrea Biagiolini, Carlo Tavallini, Crowfast_ph, Elis Bolis, Fabiolino, Giancarlo Vetrone, Grandisde, Guelfo, Guido Dall'Olio, Lele67, Lukeskywalker, Malpez, Massimiliano82, Maxmontella, Nightss, Photo_montre, Roberto Carrano, S5pro, Simone Gambi

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Giancarlo Vetrone

sent on 26 Novembre 2025 (19:39) | This comment has been automatically translated (show/hide original)

Always shots to leave you speechless. Congratulations :-)

Roberto Carrano

sent on 01 Dicembre 2025 (13:54) | This comment has been translated

Amazing!

Andrea Biagiolini

sent on 01 Gennaio 2026 (10:46) | This comment has been automatically translated (show/hide original)

I couldn't have started the year better, this audience of stars is magnificent.

Andrea Curzi

sent on 01 Gennaio 2026 (11:05) | This comment has been automatically translated (show/hide original)

Thank you so much Andrea <3

Fabiolino

sent on 01 Gennaio 2026 (11:40) | This comment has been translated

Wonderful!

Guido Dall'Olio

sent on 01 Gennaio 2026 (18:31) | This comment has been automatically translated (show/hide original)

Truly incredible!
I would have two curiosities, if you can: !) Where does the color red come from? The gases of the nebula?; 2) How long is the processing time? (Since the stars are stationary, I guess you used a relatively short shutter speed, or you had something that allowed you to compensate for the Earth's rotation; sorry, I don't know anything about astrophotography, but I'm very curious).

Andrea Curzi

sent on 02 Gennaio 2026 (9:40)

This comment is too long to be automatically translated, so it will be shown in its original language (Italian)

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Ciao guido grazie mille e benvenuto su juza!
Esatto, il colore rosso viene dai gas della nebulosa ed è dato dalle emissioni di idrogeno della stessa. È però possibile catturarla solo con strumenti specifici come una fotocamera Astromodificata ( viene rimosso/sostituito un filtro sul sensore per renderla sensibile a determinati spettri di luce) e per aumentarne i dettagli si usano filtri particolari. In questo caso ho usato un filtro per diminuire l inquinamento luminoso e un filtro a banda stretta specifico solo per l h-alpha (le emissioni di idrogeno).
Per i tempi di posa uso un astroinseguitore che mi permette di arrivare anche a 3-4 minuti per ogni singola posa. In questo caso ho fatto uno stacking di circa 20 scatti in RGB e altri 20 per l h-alpha e lavorati con software specifico per astrofotografia!

Guido Dall'Olio

sent on 03 Gennaio 2026 (19:34) | This comment has been automatically translated (show/hide original)

Ah here. I had imagined that the realization was quite complex both technically and as a subsequent process. The result is still amazing. Thanks for the explanation!

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