Essai de mixage SHO et H alpha pur sur IC 1396 (Gaillard Jérôme)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B160 · B161 · B162 · B163 · B365 · B367 · Erakis · Erakis (μ Cep) · HD205196 · HD205510 · HD205948 · HD206081 · HD206183 · HD206267 · HD206482 · HD206773 · HD207086 · HD239712 · HD239729 · HD239748 · IC 1396 · LBN 451 · LBN 452 · LBN 455 · LBN 456 · LBN 457 · LDN · LDN 1085 · LDN 1086 · LDN 1087 · And 36 more.

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Essai de mixage SHO et H alpha pur sur IC 1396

Powered byPixInsight

Essai de mixage SHO et H alpha pur sur IC 1396

Je me suis amusé à faire des essais de traitement sur Pixinsight.
En fait, j'ai combiné deux images différentes de IC 1396 : l'une en SHO faite cet été à Valdrôme avec la FSQ 106 et l'autre en H alpha faite il y a deux jours.
Bien évidemment, les deux images n'ont pas du tout ni le même cadrage, ni la même orientation et ont été faites avec des focales différentes.
J'ai donc d'abord utilisé le process "Star Alignment" et ai ensuite fait un crop avec "Dynamic Crop" en appliquant le même découpage sur les deux images.
Après avoir installé récemment Graxpert sur Pixinsight, j'avais remarqué que le menu "Toolbox" était apparu dans les scripts avec plein d'outils que je n'avais jamais testés.
J'ai donc essayé le script "Combine RGB and narrowband" à partir de là. J'ai tout de suite obtenu une image sympathique mais où l'aspect des étoiles était détérioré. Qu'à cela ne tienne ! Notre ami "Star X terminator" est venu à la rescousse, j'ai repris le process et ai remis les étoiles ensuite.
Voilà donc le résultat en image.
Evidemment le cadrage est perfectible car je n'avais pas du tout prévu de faire ce genre de manipulation au départ...

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Status	Advanced success
Started	...
Astrometry.net job	8983375
PixInsight job	E73ROQX5H3ZMQ2H10GOBLDUCZLSEE9IY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h41m04s.67
RA (top/left)	21h45m01s.59
RA (top/right)	21h26m56s.90
RA (bottom/right)	21h37m30s.30
RA (bottom/left)	21h54m56s.96

Dec (center)	+57°17′13″.3
Dec (top/left)	+59°09′17″.9
Dec (top/right)	+57°38′14″.4
Dec (bottom/right)	+55°24′52″.2
Dec (bottom/left)	+56°50′21″.7

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Essai de mixage SHO et H alpha pur sur IC 1396

Essai de mixage SHO et H alpha pur sur IC 1396

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Essai de mixage SHO et H alpha pur sur IC 1396

Essai de mixage SHO et H alpha pur sur IC 1396

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