NGC 5363LRGB from Deep Sky West (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: NGC 5360 · NGC 5363 · NGC 5364 · NGC 5373

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NGC 5363LRGB from Deep Sky West

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NGC 5363LRGB from Deep Sky West

Here are some processing steps. We have discovered a touch of a noise problem with the 16803 chip. Ate Rick's suggestion we are now using overscan techniques and they seem to help considerably.

What I did was drizzling (note the size of the published image). I have looked at some data on the SNR and even with these non-undersampled images the SNR improves with drizzle... using Eric's techniques. Also, if you look at the correction that drizzling produces it will often reduce the banding associated with the 16803. I cannot recall how much it did here. The stars are very round after drizzling.

I did deconvolute the L image but the effect was minimal.

I mask-stretched the RGB image (after color correction). The L was stretched via STF since I wanted a bright galaxy to do HDRM, which was next on the L. I tried various forms of stretching but they did not help much.

I then noise-reduced using ATW on the first two wavelets (100% and 50%). This allowed me to cleanly clip the black points of both images.

I increased the saturation of the RGB then used the AIP script to merge the L and RGB at 60 and 40% settings. The increased saturation was to compensate for the increased L signal.

I brought the image into PS but could not do much more with it there.

Hope these processing comments are useful to other and appreciate any constructive criticism.

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Status	Advanced success
Started	...
Astrometry.net job	1615517
PixInsight job	J1ZO34A5RU01NDZ2UP7ER12UG0PRXR00
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	13h56m10s.491
RA (top/left)	13h54m51s.886
RA (top/right)	13h57m15s.190
RA (bottom/right)	13h57m29s.168
RA (bottom/left)	13h55m05s.716

Dec (center)	+05°08′47″.100
Dec (top/left)	+04°52′38″.49
Dec (top/right)	+04°49′08″.80
Dec (bottom/right)	+05°24′56″.40
Dec (bottom/left)	+05°28′24″.13

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NGC 5363LRGB from Deep Sky West

NGC 5363LRGB from Deep Sky West

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NGC 5363LRGB from Deep Sky West

NGC 5363LRGB from Deep Sky West

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