IC 1805 - The Heart Nebula - Dual Narrowband OSC (Morsing)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14558 · HD14817 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15665 · HD15785 · HD15851 · HD16183 · HD16410 · HD16429 · HD16626 · HD236966 · IC 1795 · IC 1805 · IC 1824 · LBN 645 · LBN 646 · LBN 647 · LBN 648 · LBN 650 · LBN 654 · LBN 655 · And 21 more.

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IC 1805 - The Heart Nebula - Dual Narrowband OSC

Revision title: Re-processed - HOO

Powered byPixInsight

IC 1805 - The Heart Nebula - Dual Narrowband OSC

Revision title: Re-processed - HOO

Here is another take on the Heart Nebula, this time with the Optolong L-eXtreme dual narrowband filter. This image was processed in Pixinsight with a bit of retouching in Photoshop. Compare this to the image I posted a few weeks ago with a CLS filter and processed in DSS and photoshop. The difference is remarkable!

I ended with some mottling in the blue parts of the nebula - this is most likely due to my limited processing skills (the capture session was dithered). Perhaps I just need more integration time to avoid this, as the O-signal is quite week, or at least the 'excess' signal in the middle of the Heart is not much higher than the Ha signal there.

First version is a pure HOO processing and in the final version, the green channel is 0.2xH+0.8xO, to get the orange-yellow (Hubble-ish) tint that I currently prefer.

Original
B
C
Final
D

B

Title: Hubble-ish palette

Description: H(HO)O version with the green channel as 20% Ha and 80% OIII.

Uploaded: ...

C

Title: Hubble-ish palette - saturated

Description: Increased saturation - My monitor is not well calibrated, and I found that it looked a little dull on other screens

Uploaded: ...

D

Title: Re-processed - HOO

Description: I was not happy with the blue in the nebula - too much pattern noise and too little colour. I think this re-process is better. I also did not dampen the stars as much - I like them dim, but this way blends better into the nebula background (less artifacting).

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	5407605
PixInsight job	EBGUF6Q74JXJCX782JPEAVVRKAG10GBX
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m58s.98
RA (top/left)	02h38m29s.40
RA (top/right)	02h44m32s.18
RA (bottom/right)	02h26m58s.50
RA (bottom/left)	02h21m56s.38

Dec (center)	+61°27′40″.4
Dec (top/left)	+60°05′24″.4
Dec (top/right)	+62°08′40″.9
Dec (bottom/right)	+62°49′02″.6
Dec (bottom/left)	+60°43′06″.6

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IC 1805 - The Heart Nebula - Dual Narrowband OSC

Revision title: Re-processed - HOO

IC 1805 - The Heart Nebula - Dual Narrowband OSC

Revision title: Re-processed - HOO

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IC 1805 - The Heart Nebula - Dual Narrowband OSC

Revision title: Re-processed - HOO

IC 1805 - The Heart Nebula - Dual Narrowband OSC

Revision title: Re-processed - HOO

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