Stephan's Quintet LRGB from DSW (Ben Koltenbah)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7317 · NGC 7318 · NGC 7319 · NGC 7320 · Stephan's Quintet

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Stephan's Quintet LRGB from DSW

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Stephan's Quintet LRGB from DSW

This is my first image from Deep Sky West (DSW). It is Stephan's Quintet in Pegasus taken between Oct 11 and Nov 9 2017 using the RCOS system. It is an LRGB image combining data form all channels for synthetic luminance.

I'm most impressed with this data. It's the first set that I've been able to really get into form such a dark site. I attempted to use PI's PhotoColorCalibration process, but I was disappointed in the results. Instead I used the older ColorCalibration process over the whole image. To my eye the reds are too orange in shade, and I was hoping to be able to get more blue out of it. Alas, that didn't happen, but the neat thing is that having joined DSW I have complete access to the data and calibration files, so I can process it as many times as I'd like.

If I make another revision on this I will consider not making a synthetic luminance and just using the L data. I ended up not doing a deconvolution step on L as it didn't seem to gain me much, however the cropped version might have benefited from it. Next time I'll see if deconvolution gains me some increase of detail on the cropped image.

Final
Original
B
C
D
E

B

Description: Synthetic Luminance (L+R+G+B)

Uploaded: ...

C

Description: Inverted Synthetic Luminance

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D

Description: Annotated Synthetic Luminance

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E

Description: Cropped LRGB Image

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	1959521
PixInsight job	Y82JW1DTXN810STG1ZZ3IBYD7GHHDEDY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h35m55s.54
RA (top/left)	22h37m02s.81
RA (top/right)	22h34m15s.78
RA (bottom/right)	22h34m48s.77
RA (bottom/left)	22h37m34s.82

Dec (center)	+33°59′45″.0
Dec (top/left)	+34°20′20″.9
Dec (top/right)	+34°13′35″.6
Dec (bottom/right)	+33°39′06″.0
Dec (bottom/left)	+33°45′48″.7

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Stephan's Quintet LRGB from DSW

Stephan's Quintet LRGB from DSW

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Stephan's Quintet LRGB from DSW

Stephan's Quintet LRGB from DSW

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