NGC4945 (Caldwell 83, Golden Coin, Cigar, Tweezers) (Brian Boyle)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: NGC 4945

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NGC4945 (Caldwell 83, Golden Coin, Cigar, Tweezers)

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NGC4945 (Caldwell 83, Golden Coin, Cigar, Tweezers)

I put this image up with a degree of trepidation, since it appears the only 4 people have looked at my Eta Car image. Perhaps I am being ostracised (justifiably) for crimes against the SHO palette.

At part of my penitence, I have returned to LRGB (not quite all the way but to OSC - but I sense it is coming) for NGC4945.

I was too busy wrapped in watching the football game on TV to realise I had accidently set the gain to 49 (not 139) on my camera. [Note to self: ASIAir app on a phone and large fingers do not work well together]. I only noticed my blunder when I woke up the next morning to stop the integration and park the telescope.

So here are 203 frames across LRGB at a gain of 49.

51 x 120sec L

52 x 120sec R

50 x 120sec G

50 x 120sec B

Original
B
C
D
Final
E

B

Description: Resample to better match seeing.

Uploaded: ...

C

Description: A revised version, with reduced stretching.

Uploaded: ...

D

Description: Thanks to the wonderful encouragement and advice of my Astrobin friends, I think I may be starting to get on top of star-bloat.

Uploaded: ...

E

Description: Re-processed from scratch with 2.5years extra knowledge and experience. Plus L-band data from Telescope Live.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	8833288
PixInsight job	3QMURY22EMK46JHIO0BCHVI5FDI5JZCJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h05m28s.851
RA (top/left)	13h06m33s.390
RA (top/right)	13h04m26s.638
RA (bottom/right)	13h04m23s.876
RA (bottom/left)	13h06m31s.518

Dec (center)	-49°28′11″.30
Dec (top/left)	-49°18′01″.47
Dec (top/right)	-49°17′38″.92
Dec (bottom/right)	-49°38′18″.41
Dec (bottom/left)	-49°38′41″.24

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NGC4945 (Caldwell 83, Golden Coin, Cigar, Tweezers)

NGC4945 (Caldwell 83, Golden Coin, Cigar, Tweezers)

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NGC4945 (Caldwell 83, Golden Coin, Cigar, Tweezers)

NGC4945 (Caldwell 83, Golden Coin, Cigar, Tweezers)

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