Ou4 - Giant Squid Nebula - Bicolor (David Zimák)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD201429 · HD202214 · HD202380 · HD239582 · HD239605 · HD239618 · HD239626 · LBN 445 · LBN 449 · LBN 453 · PGC 165873 · PGC 167721 · PGC 167787 · PGC 167789 · PGC 3096611 · Sh2-129 · TYC3965-1002-1 · TYC3965-1292-1 · TYC3965-1320-1 · TYC3965-1409-1 · TYC3965-1419-1 · TYC3965-1482-1 · TYC3965-1487-1 · TYC3965-1535-1 · TYC3965-1539-1 · TYC3965-1754-1 · TYC3965-206-1 · TYC3965-4-1 · TYC3965-452-1 · TYC3965-566-1 · And 21 more.

Ou4 - Giant Squid Nebula - Bicolor

Hello everyone,

I was aiming 4 nights for this fantastic target ...far from perfect but I´m happy about that result, tried this one several times in past 3 years but never catched that faint OIII emissions before. Sure now when I have the f3 Newton is little bit easier...yet still pretty difficult target drowned into the noise and much stronger H-Alfa emissions around which was left behind in this case to reveal the squid part. Wanted to keep the effect of ,,crystal glass,, for the squid part...just love it this way so the stars inside nebula still shine nicely and sharp. Looks more naturally to me and it does have a kind of ,,3D look,, too .. hope I succeeded somehow.

When you hold the mouse over the main preview window, the OIII emission line will appear.

Enjoy
David

Original
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Description: OIII emission only..

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Description: Crop for squid ..

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Status	Advanced success
Started	...
Astrometry.net job	7901947
PixInsight job	G7DV3VN0LPQPEBWDZYJFKGEU1V7AT3XI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h12m21s.98
RA (top/left)	21h18m44s.11
RA (top/right)	21h17m46s.69
RA (bottom/right)	21h05m34s.75
RA (bottom/left)	21h07m18s.83

Dec (center)	+59°56′28″.1
Dec (top/left)	+58°53′15″.1
Dec (top/right)	+61°05′21″.4
Dec (bottom/right)	+60°58′22″.5
Dec (bottom/left)	+58°46′49″.7

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Ou4 - Giant Squid Nebula - Bicolor

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