First ever colour image of Hu 3 - revealing Oiii (Sven Eklund)

First ever colour image of Hu 3 - revealing Oiii

This AstroBin-first was discovered in 2010 by Sean Walker and Dennis di Cicco (as WD-1) and was later independently rediscovered by @Laurent_HUET in 2017.

Hu 3 is quite large - around 20 arcmin i diameter. The very weak and therefore previously overlooked Oiii signal has made it less likely that it is a true PN. It has no obvious CSPN.

Hu 3 has previsously been imaged in Ha by Sean Walker, but I believe this is the first ever colour image of Hu 3.

Ra : 04 41 10.89
Dec : +57 54 17.0

12h Ha
42h Oiii

A Dynamic HOO palette was used. Image is Drizzled and heavily cropped.

Original
Final
B

Unique or Unusal Deep Sky Targets
First on Astrobin
Imaged with N.I.N.A.
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PixInsight Addicts
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ASI 6200 MM Pro

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Basic failed
Started	...
Astrometry.net job	8954445
PixInsight job	n/a
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