Crescent Nebula - NGC-6888 (Dale Penkala)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · LBN 203 · NGC 6888 · Sh2-105

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Crescent Nebula - NGC-6888

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Crescent Nebula - NGC-6888

This is a 3.8hr total integration time stacked in SharpCap last night with my l-enhance filter in Auburn, Michigan - Penmitlaw Observtory. Bortle 4.2 sky's.

I took a series of 5 second images with an L-Pro filter for 50 minutes to achieve better star color with a mask that I used in Gimp. While it did help somewhat I'm not real happy with it so I may try to reprocess it again with a different mask. I also used a star reduction process with this as well and I’m happy with that.

I've imaged this in the past and have never gotten the greenish blue hue around the top left side as well as the one star also has it coming off the right side like a tail. Guessing the l-enhance filter helped bring this out. I may take another night of data and see if I can get more of that detail.

Final
Original
B

B

Description: Attempted to add OIII data in R&B channels. I’m not sure that I like this change as I’m not sure I did it correctly.

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Status	Advanced success
Started	...
Astrometry.net job	4646100
PixInsight job	4S0COS144ACX63X8X0UCJKWL9LUBJISI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h12m04s.775
RA (top/left)	20h09m04s.185
RA (top/right)	20h12m33s.465
RA (bottom/right)	20h15m04s.551
RA (bottom/left)	20h11m35s.577

Dec (center)	+38°20′44″.91
Dec (top/left)	+38°29′24″.35
Dec (top/right)	+37°44′49″.15
Dec (bottom/right)	+38°11′51″.32
Dec (bottom/left)	+38°56′44″.33

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Crescent Nebula - NGC-6888

Crescent Nebula - NGC-6888

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Crescent Nebula - NGC-6888

Crescent Nebula - NGC-6888

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