View allAll Photos Tagged 6946
" My first Green Sandpiper "
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TMB LZOS 152 + Riccardi Reducer @ F/6
Moravian G3 16200 + Chroma LRGB
Parallax Instruments HD200c
L: 26x300s bin 1x1
RGB: 10x300s bin 1x1
FWHM: 2.8"
Total exposure: 5h
Captured with Sequence Generator Pro
Processed with Pixinsight
Galaxy NGC 6946 is nothing short of spectacular. In the last century alone, it has experienced 10 observed supernovae (the explosion of a star), earning its nickname as the Fireworks Galaxy. 🎆
In comparison, our Milky Way averages just one to two supernova events per century. This NASA's Hubble Space Telescope image shows the stars, spiral arms, and various stellar environments of NGC 6946 in phenomenal detail.
We are able to marvel at NGC 6946 as it is a face-on galaxy, which means that we see the galaxy “facing” us, rather than seeing it from the side (known as edge-on). The Fireworks Galaxy is further classified as an intermediate spiral galaxy and as a starburst galaxy. The former means the structure of NGC 6946 sits between a full spiral and a barred spiral galaxy, with only a slight bar in its center, and the latter means it has an exceptionally high rate of star formation.
The galaxy resides 25.2 million light-years away, along the border of the northern constellations of Cepheus and Cygnus (The Swan).
Image credit: ESA/Hubble & NASA, A. Leroy, K.S. Long
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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National Express Platinum 6946 passes through Bartley Green with an X22 service for Birmingham
Vehicle Details
Operator: National Express West Midlands
Fleet Details: 6946 'Sian Eugena Kathleen'
Registration: SK68 MKC
Vehicle Type: Alexander Dennis Enviro 400 MMC
Vehicle History
New to Birmingham Central 12/18
Nestled on the border between Cepheus and Cygnus NGC 6946 is a bright Intermediate Spiral Galaxy and lies at a distance of around 18 million light years.
This image consists of just over 10 hours of exposure time with an Atik 460ex & Altair Astro 6" RC.
Image acquisition in Sequence Generator Pro and processing completed in Pixinsight and CS5.
NGC 6946, sometimes referred to as the Fireworks Galaxy, is a face-on intermediate spiral galaxy with a small bright nucleus, whose location in the sky straddles the boundary between the northern constellations of Cepheus and Cygnus. Its distance from Earth is about 25.2 million light-years , similar to the distance of M101 (NGC 5457) in the constellation Ursa Major. Both were once considered to be part of the Local Group , but are now known to be among the dozen bright spiral galaxies near the Milky Way but beyond the confines of the Local Group. NGC 6946 lies within the Virgo Supercluster.
Discovered by William Herschel on 9 September 1798, this well-studied galaxy has a diameter of approximately 40,000 light-years, about one-third of the Milky Way's size, and it contains roughly half the number of stars as the Milky Way. It is heavily obscured by interstellar matter due to its location close to the galactic plane of the Milky Way. Due to its prodigious star formation it has been classified as an active starburst galaxy. (Courtesy Wikipedia)
An H II region or HII region is a region of interstellar atomic hydrogen that is ionized. It is typically a cloud in a molecular cloud of partially ionized gas in which star formation has recently taken place. These can be seen in distant spiral galaxies as red-pink star-like “knots” in the spiral arms, several of which are evident in this image.
Capture info:
Location: Orion’s Belt Remote Observatory, Mayhill NM
Telescope: Officina Stellare RiDK 400mm
Camera: SBIG STX 16803
Mount: Paramount MEII
Data: LRGB HA 5,6,4, 5,5 hours respectively
Processing: Pixinsight 1.8.8-11