Witch Head Nebula (Jon Rista)

Celestial hemisphere: Southern · Constellation: Eridanus (Eri) · Contains: IC 2118 · The star λEri · The star ψEri · Witch Head nebula

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Witch Head Nebula

My latest image, second of 2016, the Witch Head Nebula. This is an integration of 84x300s (7 hours) subs from a dark site (~21mag/sq", yellow zone). Image acquisition with Canon 5D III (unmodded), Canon EF 600mm f/4 L II @ f/4.5, ISO 800 (~1/4 histogram subs, with the exception of a handful of early evening subs, which were around 1/3rd histogram).

Processed entirely in PixInsight, using a synthetic luminance process where the L channel is extracted from the RGB and processed separately with deconvolution and additional detail-enhancing steps, and the RGB is processed with more heavy noise reduction.

I had a small tracking issue while I was imaging this, which resulted in slightly elongated stars. Deconvolution did not work quite properly for some reason (still trying to figure out why) so the stars are less ideal than I generally prefer. Background details are still faint enough that I think additional integration time is warranted, and I'm hoping to double the integration before I actually call it done.

Original
Final
B

Central USA
Cloudy Nights

3 - Dark Site
5 - Deep Sky Objects (DSO)
7 - Emission Nebula
8 - DSLR

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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 success
Started	...
Astrometry.net job	919867
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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