Henize 2-111

Constellation: Centaurus

Henize 2-111 (He 2-111, PN G315.0-00.3) is a planetary nebula in the constellation of Centaurus. Its estimated distance from Earth is 6’800 Ly. The size of the lobes is about 20 Ly and the long axis of the core of the nebula around 1 Ly. While the central stars have never been observed, its core reveals a complex structure, featuring a *toroid” of about 0.5-0.7 Ly (see image below). The brightest star in the filed is HD 127470. Link to interactive sky chart.

Dates:

This is derived from the outstanding data taken by Martin Pugh during June 2025 (Martin’s website: Remote Astrophotography with Martin Pugh (martinpughastrophotography.space).

His telescope is located in Chile (Observatory: El Sauce).

Colour palette is HOO

Telescope & Mount:

Planewave CDK24 on a Planewave L600 mount.

Imaging:

Camera: Moravian C1-61000 (bin 2×2)

Nebula:
Astrodon Ha: 38x600s
Astrodon OIII: 41x600s

Stars:
Astrodon R: 19x180s
Astrodon G: 11x180s
Astrodon B: 12x180s

Total integration time: 22h 6′