Sh2-78 aka CTSS-3 (Peter Goodhew)

Celestial hemisphere: Northern · Constellation: Aquila (Aql) · Contains: Aquila · HD177082 · PK046+03.1 · PK047+04.1 · Sh2-78

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Sh2-78 aka CTSS-3

Link: https://www.imagingdeepspace.com/sh2-78.html

Powered byPixInsight

Sh2-78 aka CTSS-3

Link: https://www.imagingdeepspace.com/sh2-78.html

CTSS-3 (Cappellaro Turatto Salvadori Sabbadin 3) or PN G046.8+03.8 is a large, late stage planetary nebula located in Aquila. Even though it was entered in the Sharpless catalog as Sh2-78 in 1959, it was not until 1990 it was categorized as a PN, when an Italian team used a technique comparing the Palomar Observatory Sky Survey plate used by Sharpless with a new infrared survey plate, also from Palomar. The original publication can be found here.

CTSS-3 is reported to be at a distance of about 2200 light years and to have a diameter of about 12 arcmin. However, in this image it is evident that besides its intense ”boxy” inner structure it also has a weaker, previously unknown outer structure, extending at least 20 arcmin, giving it an elongated, three-dimensional or moving appearance.

Data acquisition and pre-processing by Sven Eklund
Post-processing by Peter Goodhew

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Status	Advanced success
Started	...
PixInsight job	G13ALGHUNREE772XIPU5DSAKXW3DL97O
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h03m18s.96
RA (top/left)	19h04m40s.49
RA (top/right)	19h05m18s.32
RA (bottom/right)	19h01m57s.98
RA (bottom/left)	19h01m19s.16

Dec (center)	+14°07′26″.4
Dec (top/left)	+14°42′58″.6
Dec (top/right)	+13°38′59″.4
Dec (bottom/right)	+13°31′55″.9
Dec (bottom/left)	+14°35′52″.7

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Sh2-78 aka CTSS-3

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