Le calamar et la chauve-souris (Bruno)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200205 · HD201063 · HD201344 · HD201429 · HD202214 · HD202380 · HD203534 · HD203551 · HD203574 · HD203695 · HD239582 · HD239605 · HD239618 · HD239626 · LBN 441 · LBN 445 · LBN 449 · LBN 453 · Sh2-129

Le calamar et la chauve-souris

La nébuleuse à émission de la chauve-souris en vol (sh 2-129) et un spectre de calamar (Ou4), grande nébuleuse planétaire découverte par Nicolas Outters en 2011. Visuellement, on pourrait croire que le calmar se trouve à l'intérieur ou devant sh2-129, mais non, il se trouve à 2300 AL contre 1300 pour la chauve-souris.

Inutile de dire que la bestiole n'est pas facile à capturer. J'ai bien souvent voulu passer à autre chose au vu des résultats de brutes. Mon record personnel est atteint avec 81x1200" en OIII. Le mauvais temps est revenu, je m'arrête là. Surement qu'un capteur plus sensible dans cette longueur d'onde serait à privilégier pour de meilleurs résultats!... Mais bon, on fait avec ce qu'on a...

Tout ça reste assez diffus mais j'ai trouvé qu'on perdait en cohérence à pousser la luminosité ou la saturation, sans parler de la montée du bruit. Je reviendrai peut-être un peu dessus les jours à venir.
J'espère qu'elle vous plaira.

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Takahashi FSQ 85 EDX
Sharpless2 Objects
AAA : Astronomes et Astrographes Amateurs
KODAK 8300 sensor
Astrophotographes (France)
Takahashi Refractors

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Status	Advanced success
Started	...
Astrometry.net job	6233448
PixInsight job	P9TMCKOZJ7CRE36IDDGTLL1KOVPSO0UG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h08m31s.10
RA (top/left)	21h22m06s.60
RA (top/right)	20h56m44s.14
RA (bottom/right)	20h55m47s.26
RA (bottom/left)	21h19m24s.76

Dec (center)	+59°59′01″.6
Dec (top/left)	+60°56′35″.5
Dec (top/right)	+61°14′58″.4
Dec (bottom/right)	+58°56′47″.6
Dec (bottom/left)	+58°39′29″.7

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Le calamar et la chauve-souris

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