Celestial hemisphere:  Southern  ·  Constellation: Puppis (Pup)
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CG 4: Crab Man Nebula, Alex Woronow
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CG 4: Crab Man Nebula

Getting plate-solving status, please wait...
CG 4: Crab Man Nebula, Alex Woronow
Powered byPixInsight

CG 4: Crab Man Nebula

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Description

CG 4: Crab Man Nebula

OTA:……………….TAO 150 (f/7.3)

Camera:………….FLI - ML16200 (1.13 arcsec/pixel)

Observatory:….Deep Sky West, Chile

EXPOSURES:



EXPOSURES:

…R……..14 x 600 sec.

…B…....17 x 600

…G…….19 x 600

…L……..30 x 600

…H.……9 x 1800

Total exposure 22.7 hours

Image Width: 1.4 deg

Processed by Alex Woronow (2020) using PixInsight, Topaz, ACDSee, Gimp, SWT

To be precise, CG 4 is just the left arm of the Crab Man. Alone, that arm constitutes a “cometary nebula,” so-called because it sports a thick end (near the image center) and a “trailing” tail of less dense nebulosity. Strangely, there exists a catalog devoted to such objects: The Cometary Globule Catalog (or CG catalog). Although a CG catalog certainly beckons more profound research, my 45 seconds of internet search failed to turn up the whereabouts of that catalog.

Along with Crab Man, keep smiling!

Alex

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CG 4: Crab Man Nebula, Alex Woronow