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
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

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

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

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Acquisition details

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Description

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.

Comments

Revisions

  • Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband, David Elmore
    Original
  • Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband, David Elmore
    B
  • Final
    Spaghetti Nebula Sh2-240, Simeis 147, SNR G180.0-0.17 in narrowband, David Elmore
    C

B

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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C

Title: Sh2-240 reformatted

Description: Reformatted for 16x24 print. Blur and Noise Terminator applied

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Sky plot

Sky plot

Histogram

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