The Pencil Nebula (Los_Calvos)

Celestial hemisphere: Southern · Constellation: Vela (Vel) · Contains: HD77046 · HD77433 · HD77453 · NGC 2736 · Pencil Nebula

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The Pencil Nebula

Revision title: The Pencil Nebula

Powered byPixInsight

The Pencil Nebula

Revision title: The Pencil Nebula

NGC 2736 – Pencil nebula

NGC 2736 is a supernova remnant located in the constellation Vela about 815 light-years from the Milky Way. It is the brightest part of the great remnant of Vela.The length of the Pencil Nebula is about 5 light-years and it is a part of the remnant of Vela.
This remnant is located near the Pulsar of Vela, pulsar from the supernova that gave birth to the remnant about 11,000 years ago. The luminosity of the remnant comes from dense regions of gas that collided with the supernova's shock wave. As the shock wave moves through space from right to left in the Hubble Space Telescope image, it compresses the gases by heating them. Initially, the gases are heated to millions of degrees, but then they cool down and emit light.
The colors of the regions of the nebula provide information about the cooling process. Some regions are still so hot that emissions are dominated by ionized oxygen atoms, which glow blue in the image. Other regions have cooled further and they are visible by emitting red in the image. These emissions come from colder hydrogen atoms. The color therefore indicates the temperature of the gas.
The processing was quite difficult because we decided to make an image using the 3 layers of the SHO and the 3 layers of the RGB and the gradients were difficult to manage.
Luminance is derived from Ha-OIII and Luminance data.
NarrowBand layers have been added in Photoshop to the RGB.

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Title: The Pencil Nebula

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This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
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Deep sky
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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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.

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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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	6442157
PixInsight job	6XMWAVKCDUWLX1SZ1VE82SH9DMC7AVCP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h00m12s.700
RA (top/left)	08h57m51s.658
RA (top/right)	09h02m30s.413
RA (bottom/right)	09h02m31s.587
RA (bottom/left)	08h57m56s.742

Dec (center)	-45°57′25″.57
Dec (top/left)	-46°21′33″.92
Dec (top/right)	-46°22′06″.29
Dec (bottom/right)	-45°33′06″.40
Dec (bottom/left)	-45°32′33″.64

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The Pencil Nebula

Revision title: The Pencil Nebula

The Pencil Nebula

Revision title: The Pencil Nebula

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The Pencil Nebula

Revision title: The Pencil Nebula

The Pencil Nebula

Revision title: The Pencil Nebula

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