IC405 (Flaming Star Nebula) in HOO (JDJ)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: 14 Aur · 16 Aur · 17 AR Aur · 18 Aur · AE Aur · Flaming Star Nebula · IC 405 · Sh2-229 · The star 14Aur · The star 16Aur

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IC405 (Flaming Star Nebula) in HOO

Powered byPixInsight

IC405 (Flaming Star Nebula) in HOO

Imaged the Flaming Star Nebula (IC 405) in narrowband over the course of six nights in January/February 2021.

Imaged with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, Optolong L-Enhance dual narrowband filter, and full spectrum modified Nikon D5300. Total integration time of ~11 hours: 109 subs at ISO400x360 sec.

Original version = HOO image

Rev B = starless HOO image

Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, flats, and flat darks. Extracted red/green/blue channels using BatchChannelExtraction script. R and G+B channels registered and stacked using StarAlighment and Integration. R and G+B channels individually post-processed in Pixinsight. Initial processing: Cropped, gradient removal with ABE and noise reduction using the EZ Processing Suite for PixInsight EZ Denoise script. Additional post-processing in Pixinsight: mastked stretch, tgvdenoise, local histogram transformation, and morphological transformation.

Starting with individually processed Ha and OIII images generated the HOO pallette image using the following steps in PI:

(1) Used Linearfit to equalize the images (using Ha as the reference)

(2) Used the SHO-AIP script to generate the HOO image (Ha for luminance, R=Ha, G=OIII, B=OIII)

(3) Color saturation boost

Starless version generated using PixInsight starnet process.

Final
Original
B

B

Description: Starless image generated in PixInsight using starnet

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Status	Advanced success
Started	...
Astrometry.net job	4471359
PixInsight job	GF8OOULR1QI0UU3057HTT87B9OHPCQ9L
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h15m12s.56
RA (top/left)	05h20m34s.77
RA (top/right)	05h18m41s.94
RA (bottom/right)	05h09m40s.19
RA (bottom/left)	05h11m52s.56

Dec (center)	+33°55′53″.8
Dec (top/left)	+32°26′10″.4
Dec (top/right)	+35°39′29″.5
Dec (bottom/right)	+35°24′34″.6
Dec (bottom/left)	+32°12′03″.9

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IC405 (Flaming Star Nebula) in HOO

IC405 (Flaming Star Nebula) in HOO

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IC405 (Flaming Star Nebula) in HOO

IC405 (Flaming Star Nebula) in HOO

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