Galaxies

A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component tentatively dubbed dark matter. The word galaxy is derived from the Greek galaxias (γαλαξίας), literally "milky", a reference to the Milky Way galaxy.Galaxies contain varying amounts of star systems, star clusters and types of interstellar clouds. In between these objects is a sparse interstellar medium of gas, dust, and cosmic rays. Dark matter appears to account for around 90% of the mass of most galaxies. Observational data suggests that supermassive black holes may exist at the center of many, if not all, galaxies

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Triangulum Galaxy - M33

Spiral galaxy M33 is located in the triangle-shaped constellation Triangulum, earning it the nickname the Triangulum galaxy. About half the size of our Milky Way galaxy, M33 is the third-largest member of our Local Group of galaxies following the Andromeda galaxy (M31) and the Milky Way. Comprised of 54 separate Hubble fields of view, this image is the largest high-resolution mosaic of M33 assembled to date by any observatory. It resolves 25 million individual stars in a 14,000-light-year-wide region spanning the center of the galaxy.

Telescope: GSO RC10 (reduced to f/5.6)
Camera: QSI 683L
Mount: Astrophysics Mach1 GTO
Filters: Astrodon Gen2 LRGB + Ha
Subexposures: bin 1x1 Lum, bin 2x2 Colour + Ha
Total exposure: 12h (3h blend Ha)
Observatory automation: Pegasus Astro - Ultimate Powerbox v2
Autofocus: Pegasus Motor Focus Kit + UPBv2
Location: Near Gythion, Greece

m33 galaxy triangulum

celestialpixels

Galaxies