Bubble Nebula in HOO (Aaron Freimark)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · LBN 548 · LBN 549 · NGC 7635 · Sh2-162

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Bubble Nebula in HOO

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Bubble Nebula in HOO

The Bubble Nebula in Ha and OIII. This is an improvement over my old scope (and old processing skills). I really like how you can see the detail on the bubble when you zoom in.

I shot around 200 frames of LRGB as well, but threw them away. Maybe someday I'll be better at combining RGB & narrowband...

Even so, processing was tricky. I tried various different combination of starless images, using both StarNet++ and StarXterminator, but wasn't happy with the results. For this version, I did something new with masks, and created a range mask from the OIII channel, then subtracted out a star mask. This allowed me to sharpen the nebula while keeping soft stars.

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Original
Final
B

B

Description: Square crop, Improved color balance

Uploaded: ...

INDI Users
Mid-Hudson Astronomical Association (MHAA)
Northeast Imagers

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Status	Advanced success
Started	...
Astrometry.net job	5169948
PixInsight job	VTIEZO8ABHTVZRYA1SCOBIRIS4RUL4AA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h20m38s.832
RA (top/left)	23h22m49s.420
RA (top/right)	23h22m09s.211
RA (bottom/right)	23h18m26s.851
RA (bottom/left)	23h19m10s.440

Dec (center)	+61°10′47″.77
Dec (top/left)	+60°59′56″.46
Dec (top/right)	+61°26′35″.91
Dec (bottom/right)	+61°21′31″.97
Dec (bottom/left)	+60°54′57″.57

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Bubble Nebula in HOO

Bubble Nebula in HOO

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Bubble Nebula in HOO

Bubble Nebula in HOO

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