Image of the day 01/26/2018

Getting plate-solving status, please wait...

Simeis 147 (Sharpless 2-240) Small section.

Technical card

Resolution: 1664x1374

Dates: Dec. 17, 2017

Astrodon 3nm OIII: 19x1800" bin 1x1
Astrodon 3nm SII: 4x1800" bin 1x1
Blue: 15x60" bin 1x1
Green: 15x60" bin 1x1
Astrodon Ha 3nm: 20x1800" bin 1x1
Astrodon Ha 3nm: 6x600" bin 1x1
Astrodon 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 job: 1887947

RA center: 85.664 degrees

DEC center: 28.370 degrees

Pixel scale: 2.875 arcsec/pixel

Orientation: 0.258 degrees

Field radius: 0.862 degrees

Locations: The Hills Observatory, Manchester, United Kingdom


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:

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.



Mike Oates

Sky plot

Sky plot


Simeis 147 (Sharpless 2-240) Small section., 


        Mike Oates