Horsehead and Flame (Brian Boyle)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 50 Ori) · 50 zet Ori · Alnitak · B33 · Flame Nebula · Horsehead nebula · IC 434 · LBN 953 · LBN 954 · NGC 2023 · NGC 2024 · Orion B · Sh2-277 · The star Alnitak (ζ Ori

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Horsehead and Flame

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Horsehead and Flame

Managed to squeeze in 90mins on the ubiquitous 'Flaming Horsehead' combo between twilight and 75% moon last night. Conditions were better than the have been - seeing around 4arcsec, and with the occasional cloud coming through.

Chose to keep the GSO RC8 on the mount (rather than the SW Esprit 100) since in thought imaging at f/8 might reduce the effect of Alnitak, particularly with 30sec subs. It didn't really work, but for me the classic Horsehead/Flame picture needs to have diffraction spikes in it.

The is my first non-DSLR image of the Horsehead (and second overall) and I hadn't really realised just how tough a target this is to shoot and process. I still have a long way to go on this one, but I though I would post this on the basis of the 80:20 rule. Resampled at 2px (1.5arcsec) after processing to better match 3-4 arcsec seeing).

New Zealand Astrophotography
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Status	Advanced success
Started	...
Astrometry.net job	9636289
PixInsight job	OAID6L3LK60DF1Z6FCTAVKQS7QDQF71E
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h41m02s.64
RA (top/left)	05h39m24s.86
RA (top/right)	05h39m20s.15
RA (bottom/right)	05h42m40s.42
RA (bottom/left)	05h42m45s.90

Dec (center)	-02°14′41″.4
Dec (top/left)	-01°36′34″.1
Dec (top/right)	-02°52′02″.9
Dec (bottom/right)	-02°52′47″.0
Dec (bottom/left)	-01°37′18″.1

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