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Simeis 147 Supernova Remnant

Simeis 147 Supernova Remnant

A wide-field Narrowband HOO Palette (R=Ha, G=OIII, B=OIII) mosaic of the faint Supernova Remnant Simeis 147 (also known as the Spaghetti Nebula, Sharpless 2-240 or SNR G180.0-01.7).

The nebulous area is very large, with an almost spherical shell and filamentary structure that is 150 light-years across. The remnant has an apparent diameter of approximately 3 degrees of arch, and an estimated distance of approximately 3,000 light-years away (with an age of approximately 40,000 years since the star exploded). After the 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.

Elements are made at different stages in a star's life-cycle, and spread through the Universe in Supernova explosions.

"The Nitrogen in our DNA, the Calcium in our teeth, the Iron in our blood, the Carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff." - Carl Sagan, Cosmos.

About this image:
This image is the result of photographing during the festive season from the Southern Hemisphere, over several nights as the weather permitted (from dark rural skies to my Telescope Pier at home).

Deep Sky Objects like this is a challenge, as it pushes the limits of my modest Telescope gear (especially my mount). It is rewarding when you have to work hard for an image, and wide-field mosaics are always a nice challenge.

This is an example of how interesting very faint but large wide-field Deep Sky Objects can be. From our perspective of the night sky, this huge faint remnant is about 36 times the area of the full moon.

Technical Info:
4 Panel wide-field Mosaic.
16 x 600 sec. 7nm Hydrogen-Alpha (Ha) per panel.
16 x 600 sec. 6.5nm Doubly Ionized Oxygen (OIII) per panel.
William Optics Star 71mm f/4.9 Imaging APO Refractor.
Sensor cooled to -15°C on my QHY163M.
Calibration frames: Bias, Darks and Flats.
SGP Mosaic and Framing Wizard. ANSVR Solver via SGP.
Pre-Processing and Linear workflow in PixInsight,
and finished in Photoshop.

Astrometry Info:
Center RA, Dec: 85.239, 27.931
Center RA, hms: 05h 40m 57.427s
Center Dec, dms: +27° 55' 52.133"
Size: 4.76 x 3.65 deg
Radius: 2.998 deg
Pixel scale: 10.7 arcsec/pixel
Orientation: Up is 263 degrees E of N
View an Annotated Sky Chart for this image.
View this image in the WorldWideTelescope.

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Photo prise le 4 janvier 2019 (© Martin_Heigan / Flickr)

Voir aussi :
 supernova remnant, simeis 147, spaghetti nebula, sharpless 2-240, snr g180.0-01.7, ha, oiii, bi-color, bi-colour, hydrogen-alpha, narrowband, wavelengths of light, electromagnetic spectrum of light, science, physics, martin heigan, astronomy, astrophotography, mh_astro_photo, universe

Photos Supernova Remnant