The Western Veil & Pickering's Triangle Supernova Remnant
A two panel widefield Narrowband (HaOIII bi-color) Mosaic of a section of the Veil Nebula Complex (Supernova Remnant).
The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop (radio source W78, or Sharpless 103), a large but relatively faint Supernova Remnant. The source Supernova was a star 20 times more massive than the Sun, which exploded around 8,000 years ago. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 36 times the area of the full Moon). Data from FUSE (Far Ultraviolet Spectroscopic Explore) places the nebula at a distance of about 1,470 light-years away. This category of Deep-sky Object is also known as a Filamentary Nebula.
The Western Veil & Pickering's Triangle:
This image shows 2 of the regions in Veil Nebula Complex:
The Western Veil (also known as Caldwell 34), consisting of NGC 6960 (the "Witch's Broom", "Finger of God", or "Filamentary Nebula") near the foreground star 52 Cygni;
Pickering's Triangle (or Pickering's Triangular Wisp), brightest at the north central edge of the loop, but visible in photographs continuing toward the central area of the loop.
24 x 300 sec. 7nm Hydrogen-Alpha (Ha) per panel.
24 x 300 sec. 6.5nm Doubly Ionized Oxygen (OIII) per panel.
William Optics WO Star 71 Refractor Telescope.
Exposures at -20°C on my QHY163M Camera.
Integration time 8 hours total (4 hours per panel).
Calibration frames: Bias, Darks and Flats.
Sequence Generator Pro with the "Mosaic and Framing Wizard".
Astrometry.net ANSVR Blind Solver via SGP.
Pre-Processing and Linear workflow in PixInsight,
and finished in Photoshop.
Center RA, Dec: 312.171, 30.742
Center RA, hms: 20h 48m 40.959s
Center Dec, dms: +30° 44' 30.452"
Size: 2.55 x 1.78 deg
Radius: 1.554 deg
Pixel scale: 5.74 arcsec/pixel
Orientation: Up is 124 degrees E of N
View an Annotated Sky Chart for this image.
View this image in the WorldWideTelescope.