Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband (David Elmore)

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: NGC 1996 · The star 125 Tau

Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband, David Elmore

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Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband

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Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband

SNRs emit most strongly in emission lines and here the 10 minute exposures were 17 x H-alpha, 15 x Oxygen III, 11 x Sulphur II for a total of about 7 hours. Since the SNR is so large, these exposures were distributed between two fields of view and the result is a mosaic of those two fields. Coloring is naturally red Hydrogen-alpha as red, naturally cyan Oxygen III as cyan, and naturally far red Sulphur II as yellow (what else?). There is a lot of sulphur emission from this SNR.
From Wikipedia:
The nebulous area is fairly large with an almost spherical shell and filamentary structure.The remnant has an apparent diameter of approximately 3° an estimated distance of approximately 3000 (±350) light years and an age of approximately 40,000 years.
It is believed that after its stellar explosion a rapidly spinning neutron star known as pulsar PSR J0538+2817 was left behind in the nebula core, emitting a strong radio signal.

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Title: Sh2-240 Spaghetti Nebula in HOO with Sulphur II as yellow in PI

Description: Revised processing in PI utilizing Russell Corman's scripts

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Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband

Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband

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Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband

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