CenA: To L and back (Brian Boyle)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: Centaurus A · NGC 5128

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CenA: To L and back

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CenA: To L and back

My second LRGB target really turned into my first RGB target. I gave CenA the full LRGB treatment, but was disappointed to see that my L stars were even more like rugby balls (e=0.75 compared to e=0.45 for the RGB) than my Antennae image.

The first image is with the L and the second (revised) image is without. The LRGB image goes deeper, but at the expense of colour and image quality. If I were better at preprocessing, I might know how to fix this, but I think that I might just be ditching the L filter from now on.

I didn't go long enough to reveal the "Malin" shells of the galaxy, but I did pick up the optical jet.

Again perhaps more post-processing might work here - but even with judicious masking - all the usual algorithms (LHE, MLT, USM) all failed to help me.

In all cases, less was more with Cen A.

L: 60 x120s [or not]

R: 20 x 120s

G: 20 x 120s

B: 20 x 120s

Original
Final
B

B

Description: Without the L.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	4344386
PixInsight job	18NZ79HJAR7YRPZR1A6TH7H2VH30S81L
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	13h25m40s.33
RA (top/left)	13h23m52s.52
RA (top/right)	13h23m58s.41
RA (bottom/right)	13h27m29s.61
RA (bottom/left)	13h27m20s.90

Dec (center)	-43°01′34″.9
Dec (top/left)	-42°36′41″.9
Dec (top/right)	-43°27′24″.2
Dec (bottom/right)	-43°26′21″.10
Dec (bottom/left)	-42°35′40″.2

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CenA: To L and back

CenA: To L and back

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CenA: To L and back

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