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  1. Galleries
  2. »
  3. Astrophotography
  4. » Pacman nebula (NGC 281)

 
Pacman nebula (NGC 281)...

Nebulose

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Pacman nebula (NGC 281) sent on November 13, 2025 (10:44) by Giancarlo Melis. 8 comments, 316 views. [retina]

Il suo nome deriva da una vaga somiglianza al noto personaggio del videogame. Questa nebulosa ad emissione, situata nella costellazione di Cassiopea, è per molti aspetti simile alla famosa nebulosa Aquila (i pilastri della creazione). E' una zona HII e di nuvole oscure in cui nascono nuove stelle, ed è situata a circa 9.200 anni luce da noi. E' affascinante pensare che l'immagine che vedete ora sia in realtà ciò che la nebulosa era quando la Mesopotamia vedeva nascere le prime coltivazioni e i primi segni di civiltà stabile. L'immagine è stata ottenuta col RASA 8 (400mm f/2) e la nuova camera ASI 585MC Air, ed è l'unione di 65 scatti da 3 minuti ciascuno, con l'integrazione di 10 dark frame e 35 bias frame.


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avatarsupporter
sent on November 13, 2025 (23:54) | This comment has been translated

Spectacular!

avatarsupporter
sent on November 13, 2025 (23:58) | This comment has been automatically translated (show/hide original)

Remarkable work.

avatarsupporter
sent on November 14, 2025 (19:01) | This comment has been translated

Fabulous

avatarsenior
sent on November 17, 2025 (10:07) | This comment has been translated

Thank you!

avatarsenior
sent on November 19, 2025 (9:45) | This comment has been automatically translated (show/hide original)

Beautiful shot, if I really have to find something to my personal taste maybe I find the stars a bit intrusive, otherwise excellent, you have collected a lot of signal even around the nebula. Congratulations!

avatarsenior
sent on November 19, 2025 (14:42) | This comment has been automatically translated (show/hide original)

Thank you Gianluca, confirm the impression I had, in the elaboration phase this time I struggled to reduce the stars.
Paradoxically, the sky was quite clear, and I reached a very low fwhm, like never before.
What has changed, compared to the previous shots, is the sensor, I went from 183 to 585.
So, just to get an opinion, how does this look to you?: www.juzaphoto.com/galleria.php?t=5135940&l=it

avatarsenior
sent on November 19, 2025 (15:34) | This comment has been automatically translated (show/hide original)

I find them less intrusive than this one, even if they are always very 'strong' in the image, very bright. It probably also depends a lot on the average magnitude of the stars in the field.
During the processing phase, do you manage stars and the sky background separately or do you go to process them together?

avatarsenior
sent on November 19, 2025 (16:21) | This comment has been automatically translated (show/hide original)

I generally separate just to manage saturation selectively.
I think at this point it also depends on the different sensor.


RCE Foto

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