Abell 16 (astroian)

Celestial hemisphere: Northern · Constellation: Lynx (Lyn) · Contains: PK153+22.1

Image of the day 03/27/2021

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Abell 16

Image of the day 03/27/2021

Powered byPixInsight

Abell 16

Hello,

This is my image of the planetary nebula Abell 16.

Abell 16 is one of the few examples of spherical PNe. Unfortunately, it is very faint and so is rarely imaged and doesn’t show up much in the professional literature. I found one study on the deceleration of nebula shells that talks about it, but otherwise it tends to show up in various surveys. From these we can glean a distance of 2413 lightyears, a diameter of ~3 lightyears and gas expansion speeds of ~37km/s.

PNe are the result of a slowly expanding shell of gas ejected by the progenitor star during its AGB phase, interacting with the faster stellar wind given off when the progenitor star’s core is exposed. Often these winds are shaped by magnetic fields, companion stars, the interstellar medium and other effects, but in this case the gases appeared to have expanded equally in all directions.

Given that this interaction results in the turbulent mixing of bubbles of hot gas, I have deliberately highlighted the layers containing structures with a size similar to the FHWM of the image to give the impression of a roiling, boiling sphere of expanding gasses.

For the nebula, the narrow band channels have been blended according to the following scheme:

Red = 0.9*Ha+0.1*N2, Green = 0.5*(Red + O3), Blue = O3.

The background stars are 30x60s each in red, green and blue.

I hope you like it.

Rarely Imaged Small DSOs
Abell Planetary Nebula
Images from the EdgeHD Series
Planetary Nebulae

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Status	Advanced success
Started	...
PixInsight job	X7WVT1H638Y3PHA180S6ZJ9ML1K7QFGA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h43m53s.400
RA (top/left)	06h43m14s.367
RA (top/right)	06h43m09s.751
RA (bottom/right)	06h44m32s.765
RA (bottom/left)	06h44m36s.729

Dec (center)	+61°47′24″.19
Dec (top/left)	+61°39′52″.90
Dec (top/right)	+61°54′34″.42
Dec (bottom/right)	+61°54′54″.84
Dec (bottom/left)	+61°40′13″.25

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Image of the day 03/27/2021

Abell 16

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