Horsehead and Flame (Caelan Chapman)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 Ori · 48 sig Ori · 50 Ori) · 50 zet Ori · Alnitak · B33 · Flame Nebula · HD290808 · HD290812 · HD290814 · HD290815 · HD290852 · HD290853 · HD290854 · HD294272 · HD294273 · HD294274 · HD294277 · HD294278 · HD294279 · HD294297 · HD294298 · HD294300 · HD294301 · HD294302 · HD294303 · HD294304 · HD294306 · HD294307 · HD294308 · And 42 more.

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Horsehead and Flame

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Horsehead and Flame

This is a two panel mosaic of the Horsehead and Flame nebulae taken over the course of about a week of November, 2022. I ran into a myriad of issues processing this image due to having frost on my scope for a good chunk of the green subs. This caused some strange gradients over high signal areas that made background extraction incredibly frustrating. If you look closely, there are also a few reflections present that are greenish-yellow. I opted to leave them be instead of clone-stamping them out. Unfortunately, I may have accidentally gone a little hard on the sharpening. I was just excited to use Blur xTerminator, as it had just come out as I started to process this image.

Panel 1 (Horsehead half)
R = 117 x 120s
G = 77 x 120s
B = 91 x 120s
Ha = 28 x 300s

Panel 2 (Flame half)
R = 149 x 120s
G = 65 x 120s
B = 78 x 120s
Ha = 41 x 300s

I will definitely be revisiting this project when the Northeastern weather decides to clear up a bit. I would have liked 150 exposures per channel, and to have some shorter exposures to tame Alnitak and friends. Also, I will definitely dial back the sharpening, or at least target it more towards the places that will benefit from it. For now though, I am happy with the result.

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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	6824957
PixInsight job	AAH7W5HHXT8PT64UC82WFMN30J6BT7ZR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h40m53s.44
RA (top/left)	05h39m34s.63
RA (top/right)	05h37m24s.27
RA (bottom/right)	05h42m12s.32
RA (bottom/left)	05h44m22s.54

Dec (center)	-02°17′12″.9
Dec (top/left)	-01°14′52″.3
Dec (top/right)	-02°56′28″.8
Dec (bottom/right)	-03°19′31″.6
Dec (bottom/left)	-01°37′53″.1

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