Simeis 147 (Sharpless 2-240) Small section. ( Mike Oates )

Image of the day 01/26/2018

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Simeis 147 (Sharpless 2-240) Small section.

Imaging telescope or lens:Takahashi FSQ-106 ED

Imaging camera:Starlight Xpress SX-814 Trius Monochrome CCD

Mount:Sky-Watcher EZ-EQ6 GT

Guiding camera:Starlight-XPress Lodestar Autoguider

Software:Main Sequence Software Sequence Generator Pro , Photoshop CS6 , PIXINSIGHT 1.8

Filters:Astrodon 3nm OIII , Red , Green , Blue , Ha 3nm , Astrodon 3nm SII

Accessories:Lakeside Astro Motor Focus System , Starlight Xpress SX 'Maxi wheel' , Starlight Instruments FTF3545B-A Focuser

Dates:Dec. 17, 2017

Frames:
Astrodon 3nm OIII: 19x1800" bin 1x1
Astrodon 3nm SII: 4x1800" bin 1x1
Blue: 15x60" bin 1x1
Green: 15x60" bin 1x1
Ha 3nm: 20x1800" bin 1x1
Ha 3nm: 6x600" bin 1x1
Ha 3nm: 1x3600" bin 2x2
Red: 15x60" bin 1x1

Integration: 24.2 hours

Avg. Moon age: 28.83 days

Avg. Moon phase: 0.55%

Mean SQM: 18.50

Basic astrometry details

Astrometry.net job: 1887947

RA center: 5h 42' 39"

DEC center: +28° 22' 12"

Pixel scale: 2.875 arcsec/pixel

Orientation: 0.258 degrees

Field radius: 0.862 degrees

Resolution: 1664x1374

Locations: The Hills Observatory, Manchester, United Kingdom

Data source: Backyard

Simeis 147, also known as the Spaghetti Nebula, SNR G180.0-01.7 or Sharpless 2-240, is a supernova remnant in the Milky Way, straddling the border between the constellations Auriga and Taurus.

The nebulous area is fairly large with an almost spherical shell and filamentary structure. The remnant has an apparent diameter of approximately 3 degrees, 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.
Info from: https://en.wikipedia.org/wiki/Simeis_147

This image is a small section of the nebula, in fact it is panel 10 of a 16 panel mosaic that I started recently. Due to the rather long integration times for each panel, this mosaic will be considered a very long term project!

Narrow band images processed as tone maps with RGB stars added after. Most of the processing is done in PixInsight and finished off in Photoshop.