The Bat and Squid Sh2-129 and OU4 (Jim Lindelien)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B148 · B149 · B150 · B152 · Sh2-129 · VdB140

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The Bat and Squid Sh2-129 and OU4

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The Bat and Squid Sh2-129 and OU4

The Bat and Squid Sh2-129 and OU4 Bi-Color with synthetic green channel; along with dark nebulae B150, B152, and B148.

R=Ha

B=OIII

For the green channel I combined normal OIII with quadratic Ha data. Squaring the Ha data has the effect of highlighting the brighter "bat wing" Ha structures in oranges and yellows in the rendering, giving it more apparent depth. Modest star de-emphasis.

I'm very tempted to gather another couple of nights of OIII signal as it's a little noisier than I want.

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Original
B
Final
C

B

Description: A family member also asked for a version with the color knob turned up to 11. Take your pick!

Uploaded: ...

C

Description: Raised midtone brightness of the image and reduced star size by 10% to FWHM~2.7, to reduce the star field's visual competition with the nebulae. Still needs more OIII signal.

Uploaded: ...

Sharpless2 Objects
ASI 6200 MM Pro
WO Star 71
Narrowband imaging

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Status	Advanced success
Started	...
PixInsight job	OH89IOC7T88CJLYHZ19L52AQF8AD7OFI
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h08m21s.50
RA (top/left)	21h35m07s.61
RA (top/right)	20h47m51s.60
RA (bottom/right)	20h43m26s.45
RA (bottom/left)	21h25m57s.40

Dec (center)	+60°22′09″.9
Dec (top/left)	+61°23′37″.6
Dec (top/right)	+62°45′39″.9
Dec (bottom/right)	+59°02′03″.1
Dec (bottom/left)	+57°48′43″.9

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