The Vela Supernova Remnant (Gum 16)
A wide-field Narrowband HOO Palette (R=Ha, G=OIII, B=OIII) mosaic of a portion of the the huge Vela Supernova Remnant (also known as Vela XYZ; Gum 16; SNR G263.9-03.3; 1E 0840.0-4430; RE J083854-430902).
The Vela Supernova Remnant is in the Southern constellation Vela. Its source (a Type II Supernova) exploded approximately 11,000–12,300 years ago, at a distance of about 800 light-years away. The association of the Vela Supernova Remnant with the Vela Pulsar, is direct observational evidence of Supernovae form Neutron stars. The Vela Supernova Remnant includes NGC 2736, and it also overlaps with the Puppis Supernova Remnant. Both the Puppis and Vela Remnants are among the largest and brightest features in the X-ray sky.
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 mosaic was photographed over a month, during several sessions. Deep Sky Objects like this is always a challenge, as it is time-consuming and pushes the limits of my Telescope gear. It's rewarding when you have to work hard for an image, and wide-field mosaics are always fun to image and process. This is an example of how interesting the rarely seen, faint and massive wide-field Deep Sky Objects are.
4 Panel wide-field Mosaic.
Lights/Subs total integration time: 32 hours.
24 x 600 sec. 7nm Hydrogen-Alpha (Ha) per panel.
24 x 600 sec. 6.5nm Doubly Ionized Oxygen (OIII) per panel.
William Optics Star 71mm f/4.9 Imaging APO Refractor.
Sensor cooled to -20°C on my QHY163M.
Calibration frames: Bias, Darks and Flats.
SGP Mosaic and Framing Wizard.
PlaneWave PlateSolve 2 via SGP.
Pre-Processing and Linear workflow in PixInsight,
and finished in Photoshop.
Center RA, Dec: 127.504, -44.923
Center RA, hms: 08h 30m 00.880s
Center Dec, dms: -44° 55' 23.969"
Size: 3.43 x 2.08 deg
Radius: 2.006 deg
Pixel scale: 7.73 arcsec/pixel
Orientation: Up is 301 degrees E of N
View this image in the WorldWideTelescope.