IC 2948 and IC 2944 Two Ways (with mouse-hover) (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: IC 2948 · lambda Cen nebula

IC 2948 and IC 2944 Two Ways (with mouse-hover)

IC 2948 and IC 2944 Two Ways (with mouse-hover)

OTA: CDK24” f/6.5
Camera: Moravian C3-61000 Pro, 2x2 binned at capture
Observatory: Heaven's Mirror, Chile

Exposures:
R: 8 x 180 sec
G: 8 x 180
B: 10 x 180
H: 21 x 900 sec
O: 20 x 900
S: 23 x 900
Total Exposure time: 17.3 hours
Image Width: 30 arcminutes

Processing: PixInsight, Topaz Studio2, custom scripts for star replacement and emission line extraction

These two images cover a small part of the nebula IC 2944 near its center. This region is tagged as IC 2948. The Bok Globules lie near the top of these images.

The first image (without mouse-hover) is a SHORGB image where the emission line components of the Ha, SII, and OIII were extracted from the narrowband images, and those were mapped to their true colors and added to the respective RGB broadband images.

The second image (shown with mouse-hover) is just the emission-line components extracted from the narrowband images and mapped to their actual RGB colors.

I find both images satisfying my esthetic hopes for them. Hope you enjoy at least one!

Alex Woronow

BTW, NGC 2948 is located on the accompanying annotated image (C), and NGC 2944 is the larger surrounding nebula.

Final
Original
B
C

B

Title: SHO version (on mouse-hover); SHORGB version (without mouse-hover)

Uploaded: ...

C

Title: Annotated

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	8003309
PixInsight job	38I8QFBNT3VRQMGDNUXMZA84VRV9T9YD
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h38m53s.662
RA (top/left)	11h38m41s.950
RA (top/right)	11h36m31s.718
RA (bottom/right)	11h39m06s.840
RA (bottom/left)	11h41m13s.857

Dec (center)	-63°24′14″.71
Dec (top/left)	-63°06′19″.50
Dec (top/right)	-63°32′44″.80
Dec (bottom/right)	-63°42′09″.83
Dec (bottom/left)	-63°15′35″.10

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IC 2948 and IC 2944 Two Ways (with mouse-hover)

IC 2948 and IC 2944 Two Ways (with mouse-hover)

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Image Index:

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IC 2948 and IC 2944 Two Ways (with mouse-hover)

IC 2948 and IC 2944 Two Ways (with mouse-hover)

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Description

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B

C

Sky plot

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