IC 2948 (Lambda Centuri Nebula) and its Bok Globules (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: HD100827 · HD100879 · HD101008 · HD101084 · HD101085 · HD101131 · HD101191 · HD101205 · HD101298 · HD101333 · HD101413 · HD101436 · HD101437 · HD308711 · HD308714 · HD308715 · HD308718 · HD308719 · HD308720 · HD308721 · HD308722 · HD308808 · HD308817 · HD308823 · HD308824 · HD308829 · HD308836 · HD308837 · HD308838 · HD308839 · And 3 more.

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IC 2948 (Lambda Centuri Nebula) and its Bok Globules

Powered byPixInsight

IC 2948 (Lambda Centuri Nebula) and its Bok Globules

IC 2948 (Lambda Centuri Nebula) and its Bok Globules

OTA:……………….CHI-1: CDK24 f/6.5
Camera:………….FLI PL9000
Observatory:…. Telescope Live, Chile

EXPOSURES:
…H: 12 x 600
…S: 12 x 600
…O: 12 x 600
Total exposure   6 hours

Image Width: 30 arc-minutes (Downsampled about 2x)
Processed by Alex Woronow (2022) using PixInsight, Topaz, SWT
Rendered in True-Color equivalents

In the upper left part of the image, but elsewhere as well, “small” dark clouds appear to float above the bright nebula below. Those dark clouds are referred to as Bok Globules. They are remnants of more extensive clouds that are being consumed at their edges and recruited into the surrounding emission nebulae. But they do a pretty good job of holding their own, having relatively high density (of gas and dust) and ranking among the coldest objects we know. One might mistake their appearance as evidence of their inert existence, but evidence suggests they, too, are places of active star formation hosting Herbig-Haro Objects and other proto-star objects. However, in this set of globules, no such activity has, thus far, been identified.

The BoK Globules sometimes assume the name “Thackeray Globules;” same critters!

Objects of the South - negative declination only

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Status	Advanced success
Started	...
Astrometry.net job	5860970
PixInsight job	N5XN6WH4C6I4ZC7M363Y1FAQ32FLMGYI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h37m57s.48
RA (top/left)	11h40m09s.25
RA (top/right)	11h35m41s.60
RA (bottom/right)	11h35m43s.21
RA (bottom/left)	11h40m16s.15

Dec (center)	-63°30′22″.6
Dec (top/left)	-63°14′58″.7
Dec (top/right)	-63°15′28″.5
Dec (bottom/right)	-63°45′39″.4
Dec (bottom/left)	-63°45′08″.7

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IC 2948 (Lambda Centuri Nebula) and its Bok Globules

IC 2948 (Lambda Centuri Nebula) and its Bok Globules

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IC 2948 (Lambda Centuri Nebula) and its Bok Globules

IC 2948 (Lambda Centuri Nebula) and its Bok Globules

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