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  1. Galleries
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  3. Astrophotography
  4. » Simeis 147 - The Spaghetti Nebula

 
Simeis 147 - The Spaghetti Nebula...

Astrofotografia

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Simeis 147 - The Spaghetti Nebula sent on January 12, 2017 (12:20) by Marcojetflyer. 8 comments, 1107 views. [retina]

Questa foto non vincerà alcun riconoscimento, ma vi assicuro che riuscire a riprendere Simeis 147 da casa ha, per me, il sapore di una sfida astrofotografica vinta :) Ho ripreso, nell'arco di due nottate consecutive (5 e 6 Gennaio scorsi), 120 immagini RAW da 2 minuti l'una ad ISO1600, con la mia Canon 60Da (di serie), filtro Astronomik Halfa 12nm, Nikon Ai-S 180mm ED f2.8 su montatura Celestron CG5 non autoguidata. La nebulosa era a malapena visibile dopo lo stack delle prime 60 immagini, aggiungendo le riprese della seconda nottata la resa è migliorata un poco... ho dovuto spremere le mie capacità di elaborazione per fare emergere gli intricati filamenti dal rumore di fondo. Davvero il più evanescente oggetto che abbia ripreso fino ad oggi. Ho aggiunto la Luna, ripresa in precedenza sempre con il Nikon 180 ED, per dare una idea delle grandi dimensioni della nebulosa. Luogo delle riprese: Volpiano (Torino). Teleobiettivo Nikon Ai-S 180mm ED f/2.8 Non-IF per Halfa. Montatura: Celestron CG5. Camera DSLR: 60Da (filtro originale). Guida: Senza guida. Pose: 120 da 2min. Elaborazione: Deep Sky Stacker e Photoshop. Date scatti: 05 e 06/01/2017


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user4758
avatar
sent on January 12, 2017 (13:03) | This comment has been automatically translated (show/hide original)

Compliments! Subject very complex to resume, but gorgeous!

It 'a long time that I want to try to take it too, but for a story or another we have not yet succeeded!
How cropped the photo? I would be interested to know why I would take it with a 200mm ...

avatarjunior
sent on January 12, 2017 (13:49) | This comment has been automatically translated (show/hide original)

Hello, thank you for the appreciation :-)
The photo is not cropped, shows the nebula on the APS-C size shooting at 180mm focal length. 200mm I think is the ideal focal length, especially if you rotate the camera 90 ° with respect to my recovery. In this way, the shot would be better balanced ;-)
RAW files from the Canon 60Da are 18Mpixel in Deep Sky Stacker I did stacking 'super-pixels' that halves the resolution but improves (I think) a little bit the signal / noise ratio.
Good luck with your recovery!
Marco


user4758
avatar
sent on January 12, 2017 (13:57) | This comment has been automatically translated (show/hide original)

Thanks Marco! very useful information! You, as I will use 200 1.8 I can rotate 90 ° ... I hope the time is good, but in a couple of weeks! ;-)

avatarjunior
sent on January 12, 2017 (15:00) | This comment has been automatically translated (show/hide original)

..complimenti Marco !! great job, a question, the halfa filter for dsrl (I have a 60DCds) how it works, where "put", and what there is (12nm or something?), thanks
Alexander
ps .... I saw some of your images made from Lignan, Lignan are get used to, because I live in Aosta, I go "up" to Passet

avatarjunior
sent on January 12, 2017 (16:34) | This comment has been automatically translated (show/hide original)


avatarjunior
sent on January 12, 2017 (21:25) | This comment has been automatically translated (show/hide original)

Marco .... hello and thanks of the information !! when you get up in the Valley, send me a message. Again congratulations for the beautiful shots !!

avatarsenior
sent on January 13, 2017 (11:05) | This comment has been automatically translated (show/hide original)

Congratulations, great result, they do not see many made with relfex! Too bad for the suboptimal framing, but I imagine the difficulties recovering ..... You have been working at full aperture it seems to me, the only advice that could improve the outcome I think is to try to work on iso lower lengthening time (if necessary driving), I have a 60d Baader and usually do not use more than 1000 iso ....

avatarjunior
sent on January 13, 2017 (17:16) | This comment has been automatically translated (show/hide original)



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