M27 Dumbbell Nebula

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Astrophotography

4.2 MEGAPIXEL

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Atronomia3 View gallery (50 photos)

M27 Dumbbell Nebula sent on September 13, 2025 (14:02) by Mauror.. 11 comments, 177 views.

In questa versione_2025 è stata posta particolare attenzione al bilanciamento del canale Ha rispetto a quello 03 , questo permette di coglierne sia i dettagli che i colori . Anche le stelle sono state snellite cosi da poter meglio vedere molti piccoli dettagli . La saturazione non è particolarmente spinta . La Nebulosa Manubrio (nota anche come Nebulosa Dumbbell, dalla corrispondente denominazione inglese) o con le sigle di catalogo M 27 e NGC 6853) è una celebre e brillante nebulosa planetaria visibile nella costellazione della Volpetta. La nebulosa dista circa 1360 anni luce dalla Terra, è di magnitudine apparente 7,4, ha un diametro apparente di circa 8 arcominuti e un'età stimata di 9800 anni; la sua forma ricorda quella di uno sferoide prolato ed è vista lungo la linea prospettica del piano equatoriale. Nel 1992 è stato determinato che il tasso di espansione sul piano del cielo di questa nebulosa non è superiore ai 2,3' al secolo: in conseguenza a ciò, può essere determinato un limite di età massima che si aggira sui 14.600 anni. Nel 1970 fu invece calcolata la velocità di espansione reale, pari a 31 km/s. Dato che l'asse maggiore ha un raggio di 1,01 anni luce, l'età cinematica della nebulosa sarebbe di 9800 anni.[7][8] L 900secX12 Bin1 and 60secX5 Bin1 R 600secX10 Bin2 and 60secX5 Bin1 G 600secX10 Bin2 and 60secX5 Bin1 B 600secX10 Bin2 and 60secX5 Bin1 Ha 1800secX25 Bin2 0III 1800secX25 Bin2 Totale : 30 ore Astrografo Ritchey–Chrétien GSO 10" Truss V3 Mauro

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16 persons like it: -zeppo-, Aleziggio, Andnol, Aringhe Blu, Ebrahimi, EnricoTanz, Fab0569, Gaetano Perego, Gianmario Terzitta, Gp70, Larissa71, Leonardo Nieri, Malpez, Marzio Bambini, Sandro Zambon, StefanoConti

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Leonardo Nieri

sent on September 13, 2025 (15:44) | This comment has been translated

Beautiful, congratulations!

Gp70	sent on September 13, 2025 (16:28) \| This comment has been automatically translated (show/hide original) Hi Mauro, you have highlighted even the smallest nebular volutes... congratulations indeed. A greeting Gp

Gp70	sent on September 13, 2025 (16:30) \| This comment has been automatically translated (show/hide original) PS... how come you did RGB in both 2x and 1x Bin?.... Did you look for any particular result or as I think they belong to previous shoots?

Mauror.

sent on September 13, 2025 (17:48) | This comment has been automatically translated (show/hide original)

@Leonardo Nieri TnX !

Mauror.

sent on September 13, 2025 (17:53) | This comment has been automatically translated (show/hide original)

Hi Giampi! Thank you!
Actually I do the Luminances for lrgb in Bin 1 for galaxies and star clusters ...
After several tests in the end for the nebulosity I use the Bin 2 ...
Agree?

-zeppo-

sent on September 13, 2025 (19:04) | This comment has been automatically translated (show/hide original)

One of my favorite subjects... Remarkable, congratulations!

Marzio Bambini

sent on September 13, 2025 (20:42) | This comment has been translated

Very very nice!

Mauror.

sent on September 14, 2025 (9:01) | This comment has been automatically translated (show/hide original)

@zeppo
@Marzio
thanks!

Valter Luna

sent on September 15, 2025 (9:09) | This comment has been automatically translated (show/hide original)

Gorgeous, you worked under a beautiful sky, didn't you? Otherwise the outermost gases are not highlighted.
Congratulations again!!

Mauror.

sent on September 15, 2025 (12:21) | This comment has been automatically translated (show/hide original)

@Valter
Hi yes the data were collected in the mountains... handled with caution so as not to cover the Ha signal with the O3 and vice versa.
It's also easy to create artifacts and in this case there aren't any...

Valter Luna

sent on September 15, 2025 (16:15) | This comment has been translated

Bravo!

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