NGC 6309 Box Nebula ( NGC6309) NHO (Sergei)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: Box Nebula · NGC 6309 · PK009+14.1

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NGC 6309 Box Nebula ( NGC6309) NHO

Revision title: With scale bar and 2.5m Nordic Optical Telescope image as reference

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NGC 6309 Box Nebula ( NGC6309) NHO

Revision title: With scale bar and 2.5m Nordic Optical Telescope image as reference

Nii - Red
Ha - Green
Oiii - Blue

Note an interesting ring of Nii-rich nodes here assigned to the red channel.

This is an interesting nebula that has both a spherical shell and two sets of lobes offset at an angle, a bipolar structure. Its structure and composition has been studied in this paper:
https://arxiv.org/pdf/1410.7060.pdf

Image from this paper, taken with a 2.5m Nordic Optical Telescope, served as a reference image for my own capture and processing, since HST image of this nebula only captures is bright core but not the faint extended lobes.

RGB stars from a separate broadband frame set.

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Title: Inverted luminance to show bipolar lobes

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Title: With scale bar and 2.5m Nordic Optical Telescope image as reference

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Status	Advanced success
Started	...
PixInsight job	09ZDCRN6J5ZNRMHS1O8UP7TJVP2VBNUZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	17h14m04s.249
RA (top/left)	17h13m47s.284
RA (top/right)	17h14m10s.632
RA (bottom/right)	17h14m21s.207
RA (bottom/left)	17h13m57s.817

Dec (center)	-12°54′37″.69
Dec (top/left)	-12°56′18″.22
Dec (top/right)	-12°58′48″.64
Dec (bottom/right)	-12°52′57″.00
Dec (bottom/left)	-12°50′27″.92

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NGC 6309 Box Nebula ( NGC6309) NHO

Revision title: With scale bar and 2.5m Nordic Optical Telescope image as reference

NGC 6309 Box Nebula ( NGC6309) NHO

Revision title: With scale bar and 2.5m Nordic Optical Telescope image as reference

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NGC 6309 Box Nebula ( NGC6309) NHO

Revision title: With scale bar and 2.5m Nordic Optical Telescope image as reference

NGC 6309 Box Nebula ( NGC6309) NHO

Revision title: With scale bar and 2.5m Nordic Optical Telescope image as reference

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