What is the purpose of cygnus loop?

The brighter segments of the nebula are designated NGC 6960, 6974, 6979, 6992 and 6995 in the New General Catalogue.NGC 6974 and NGC 6979 are luminous nodes in a fainter patch of the nebula on the northern edge between NGC 6992 and the Pickering Triangle. The brighter segments of the nebula are named NGC 6960, 6974, 6979, 6992 and 6995. NGC 6974 and NGC 6979 are luminous nodes in a fainter patch of nebula on the northern edge between NGC 6992 and Pickering’s triangle. Pickering’s Triangle is much fainter and has no NGC number (although 6979 is occasionally used as a designation). The oxygen, sulphur and hydrogen composition of this nebula makes .

NGC 6992, the Eastern Veil Nebula, is a large supernova remnant in the constellation Cygnus.

How far away is NGC 6992?

NGC 6974 and NGC 6979 can be seen as nodes along the northern border of the nebula, while Fleming’s Triangle is much fainter and more difficult to observe. NGC 6974 and NGC 6979 are luminous nodes in a fainter nebula patch on the northern edge between NGC 6992 and Pickering’s Triangle. In the New General Catalogue it is designated NGC 6960, which is sometimes used as a designation for the entire nebula. It was not assigned an NGC number because it was discovered after the publication of the New General Catalogue.

What is the purpose of Cygnus Loop?

A recent study of the distance of the Cygnus Loop using Gaia parallax measurements of several stars seen in the direction of the Cygnus Loop has led to a more accurate distance estimate. The Cygnus Loop marks the edge of a bubble-like, expanding shock wave from a massive stellar explosion that occurred about 15,000 years ago. Some arcs of the loop, known as the Veil Nebula or Cirrus Nebula, radiate in the visible electromagnetic range. The Cygnus Loop marks the edge of a bubble-like, expanding explosion wave of a massive stellar explosion that occurred about 15,000 years ago.

How did the Veil Nebula form?

This glowing, brightly coloured gas envelope forms a nebula that astronomers call a supernova remnant. When the shock wave of the supernova expands outwards, it collides with the walls of this cavity – forming the characteristic structures of the nebula. In 1997, Hubble’s Wide Field and Planetary Camera 2 (WFPC) photographed the Veil Nebula and provided detailed views of its structure. This section of the outer envelope is located on the west side of the supernova remnant and lies in a region known as NGC 6960 or – colloquially – the Witches’ Broom Nebula.

Although the structures are caused by different forces, they have similarities to the patterns created by the interaction of light and shadow at the bottom of a swimming pool, rising smoke or a fractured cirrus cloud.

Where is the Veil Nebula located?

Screw one into your eyepiece and watch the nebula come to life with curved and twisted strands that seem to float in 3D against the background of stars. Giant stars are known to lose mass in the form of high-speed winds of subatomic particles and dust. So imagine leaving your time machine around the year 6000 BC, several thousand years before the first pyramid was built in Egypt. Even in dark, rural skies, a fog filter is a powerful tool because it can block the natural sky glow.

You make the veil easy 🙂 Mircea-Pteancu Hi Bob, thank you for your wonderful articles which are full of practical wisdom.

References: