Ngc 3718 & ngc 3729. Hickson 56 (Matthieu TEQUI)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3718 · NGC 3729

Image of the day 03/30/2019

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Ngc 3718 & ngc 3729. Hickson 56

Image of the day 03/30/2019

Powered byPixInsight

Ngc 3718 & ngc 3729. Hickson 56

Voici ngc 3718 (Arp 214) et ngc 3729 et compagnie (Hickson 56)

située à 52 millions d'année lumière de la terre dans la constellation de le grande ourse. A l'origine, les astronomes pensaient que ngc 3718 était une galaxie lenticulaire. Mais ces 2 extensions qui émergent de chaque coté montre qu'il s'agit sûrement d'une galaxies spirale.

Certains astronomes incluent NGC 3718 dans la classe des galaxies avec des noyaux actifs connus sous le nom de LINER (Low-Ionization Nuclear Emission-line Regions). D'autres le classifient comme la galaxie de Seyfert. Beaucoup d'astronomes croient que les noyaux galactiques actifs sont alimentés par des trous noirs géants qui se cachent dans le centre.

Concernant l'acquisition, ce ne fut pas simple... Le signal à f/6.3 est évidemment bien plus faible qu'à f/2.3...

J'ai mixé avec les 2 focales différentes afin de gagner en signal mais d'avoir également du détail.

CPC925 sur table équatoriale

zwo asi 1600 mm pro

L: 240x60sec (f/6.3)

200x30sec (f/2.3)

Ha: 100*120sec (f/6.3)

RVB: 3*60*60sec (f/2.3)

soit 12h d'intégration totale

Original
Final
B

B

Description: version couleur

Uploaded: ...

Schmidt-Cassegrain Telescope (SCT) Imagers
ZWO ASI1600MM/QHY163M

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Status	Advanced success
Started	...
Astrometry.net job	2593802
PixInsight job	2K081RIMTESG74S4T7X0SYXRXKH4MD7G
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h32m48s.577
RA (top/left)	11h32m24s.817
RA (top/right)	11h30m32s.975
RA (bottom/right)	11h33m12s.156
RA (bottom/left)	11h35m05s.453

Dec (center)	+53°02′50″.86
Dec (top/left)	+53°25′06″.33
Dec (top/right)	+52°53′13″.23
Dec (bottom/right)	+52°40′31″.17
Dec (bottom/left)	+53°12′15″.70

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Image of the day 03/30/2019

Ngc 3718 & ngc 3729. Hickson 56

Image of the day 03/30/2019

Ngc 3718 & ngc 3729. Hickson 56

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Image of the day 03/30/2019

Ngc 3718 & ngc 3729. Hickson 56

Image of the day 03/30/2019

Ngc 3718 & ngc 3729. Hickson 56

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