Core of Tadpole Nebula (NGC1893) (Imran Badr)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: HD242820 · HD242855 · HD242908 · HD242925 · HD242926 · HD242935 · HD243098 · HD243110 · HD243178 · IC 410 · LBN 807 · NGC 1893 · Sh2-236

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Core of Tadpole Nebula (NGC1893)

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Core of Tadpole Nebula (NGC1893)

I captured this image from my backyard in San Jose, California. I took 206 exposures 600s (10min) each using L-Ultimate narrow band filter. I also took 39 exposures of 120s (2min) for stars. I also took 30 dark, 30 flat and 30 dark flat calibration frames for each combination. I stacked and processed them in PixInsight. Below is overall process flow:
WeightedbatchPreProcessing->SpectrophotometricColorCalibration->Deconvolution(BlurXTerminator)-> NoiseReduction(NoiseXTerminator)-> Stretching (GeneralizedHyperbolicStrech) -> Curves (color/saturation/brightness). I extract stars before stretching and then add them back to the starless image.
My imaging rig has ASI2600mcpro, EFW, OAG-L/ASI290mm(guide), and skywatcher Esprit100ed mounted over AM5 mount. My entire imaging session is controlled by ASIAir Plus.

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Status	Advanced success
Started	...
Astrometry.net job	7270407
PixInsight job	SQNNPDGI6VEV6RWGWMUI3Y9RMK4R33VK
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h22m55s.198
RA (top/left)	05h21m50s.694
RA (top/right)	05h24m23s.390
RA (bottom/right)	05h24m00s.287
RA (bottom/left)	05h21m26s.673

Dec (center)	+33°27′13″.94
Dec (top/left)	+33°05′48″.30
Dec (top/right)	+33°09′46″.94
Dec (bottom/right)	+33°48′38″.99
Dec (bottom/left)	+33°44′37″.61

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Core of Tadpole Nebula (NGC1893)

Core of Tadpole Nebula (NGC1893)

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Core of Tadpole Nebula (NGC1893)

Core of Tadpole Nebula (NGC1893)

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