Soul Nebula - SHO Palette using OSC Camera (Deepak Sureshkumar)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD17086 · HD17356 · HD17505 · HD17520 · HD17688 · HD17911 · HD17948 · HD17971 · HD18152 · HD18294 · HD18326 · HD18337 · HD18766 · HD237000 · HD237007 · HD237011 · HD237015 · HD237016 · HD237018 · HD237019 · HD237023 · HD237034 · HD237036 · IC 1848 · IC 1871 · LBN 667 · LBN 669 · LBN 670 · LBN 672 · LBN 673 · And 6 more.

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Soul Nebula - SHO Palette using OSC Camera

Link: https://www.instagram.com/p/CpXd7wmPj-u/

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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Soul Nebula - SHO Palette using OSC Camera

Link: https://www.instagram.com/p/CpXd7wmPj-u/

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

I've tried two approaches to integrating data from the L-ultimate and D2 filters.

The first and foremost way was splitting the L-ultimate Ha, D2 Sii, and combining Oiii from both filters to make the SHO image. I faced a challenge in this method while combining the Oiii from two different data sets. L-Ultimate was 3nm, whereas Askar D2 was 6nm. I tried multiple ways to integrate these data sets, but unfortunately, combined data seems to have the worst SNR compared to L-Ultimate Oiii alone. I guess either Oiii data from D2 was insufficient, or I don't know to integrate the data from two different nm filters.

Hence I combined the L-ultimate Ha, Oiii, with D2 Sii to make my SHO image. I preferred the result of this approach over the other methods.

Another approach was using the stacked RGB images from both filters and then tweaking these RGB to create HA, Oiii, and Sii with different combinations. Assigned R from L-ultimate as Ha, R from D2 as siii, and G & B from both the filters combined to Oiii or similarly created these three channels with some percentage of RGBs.

Acquisition Details
==============
Exposure: 8 Hours data Ha&Oiii 55*300Sec and Oiii&Sii 40*300Sec
Calibration Frame: 40 Darks, 40 Flats, 40 Dark Flats
Filters:- L-Ultimate and Askar ColorMagic D2
Gain:- 100Temp:- 0°
@zwoasi ASI2600MC Pro
@zwoasi ASI290MM
@williamoptics RedCat 51 II APO 250mm f/4.9
@skywatcherusa Evoguide 50ED
@zwoasi AM5
@zwoasi ASIAir Plus
@zwoasi EAF
@optolongfilter L-Ultimate
@sharpstaroptics Askar ColorMagic D2

Location
======
@eao_ae - Bortle 3

Date
====
20-Nov-22 and 18-Feb-23

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Status	Advanced success
Started	...
Astrometry.net job	7281236
PixInsight job	TI9I7RNEXEIQMQA314OJ9588SN8WJ94L
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h54m29s.37
RA (top/left)	02h53m17s.68
RA (top/right)	03h05m31s.94
RA (bottom/right)	02h55m45s.80
RA (bottom/left)	02h43m16s.70

Dec (center)	+60°21′27″.5
Dec (top/left)	+58°58′33″.1
Dec (top/right)	+60°08′34″.0
Dec (bottom/right)	+61°44′21″.5
Dec (bottom/left)	+60°30′50″.4

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Soul Nebula - SHO Palette using OSC Camera

Soul Nebula - SHO Palette using OSC Camera

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