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Name / Constellation

Cirrus Nebula

Other: NGC 6960/74/79/92/95 - Veil Nebula - Cygnus loop - Caldwell 34, 35 - Lacework Nebula - Network Nebula - Pickering's Triangle

Cyg

Coordinates AR: 20h 45m 38.0s - Dec: +30° 42′ 30″
Optics Takahashi FSQ 106N APO Fluorite F5 - 60/220 guiding refractor
Camera-Mount SBIG STF8300M - Orion StarShot Guider - 10Micron GM2000 QCI Mount
Filters Baader Halpha 7 nm - Oxygen 3 -Sulfur 2
Exposure
  • Halpha
  • Oxygen 3
  • Sulfur 2
  • 12-16 x 900 sec _ 3-4 hours each panel
  • 8 x 900 sec - 2 hours each panel
  • 8 x 900 sec - 2 hours each panel
  • UNBINNED
  • BINNING 2X2
  • BINNING 2X2
Location / Date Promiod (Valle D'Aosta-Italy) "TLP" Remote Observatory - Ha 8 aug to 09 sept 2018/ O3 & S2 15 sept to-01 oct 2018
Seeing Between 2 - 2.8" - @ 2.1 arcosec/pixel unbinned - Many images with Moon
Note Six panels mosaic - HST Palette processing
Acquisition MaxIm DL - CCD Autopilot 5
Processing Adobe Photoshop CS6 -
Comment

The Veil Nebula or Cirrus nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus.
It constitutes the visible portions of the Cygnus Loop, a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. 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 6 times the diameter, or 36 times the area, of the full Moon). The distance to the nebula is not precisely known, but Far Ultraviolet Spectroscopic Explorer (FUSE) data supports a distance of about 1,470 light-years.
The Hubble Space Telescope captured several images of the nebula. The analysis of the emissions from the nebula indicate the presence of oxygen, sulfur, and hydrogen. The Cygnus Loop is also a strong emitter of radio waves and x-rays.
On 24 September 2015 new images and videos of the Veil Nebula were released, with an explanation of the images. In modern usage, the names Veil Nebula, Cirrus Nebula, and Filamentary Nebula generally refer to all the visible structure of the remnant, or even to the entire loop itself. The structure is so large that several NGC numbers were assigned to various arcs of the nebula. There are three main visual components:
• The Western Veil (also known as Caldwell 34), consisting of NGC 6960 (the "Witch's Broom", "Finger of God", Lacework Nebula, "Filamentary Nebula") near the foreground star 52 Cygni;
• The Eastern Veil (also known as Caldwell 33), whose brightest area is NGC 6992, trailing off farther south into NGC 6995 (together with NGC 6992 also known as "Network Nebula") and IC 1340; and
• 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.
NGC 6974 and NGC 6979 are luminous knots in a fainter patch of nebulosity on the northern rim between NGC 6992 and Pickering's Triangle.