M104

Sombrero Galaxy

 

Object M104 - Galaxy
Constellation Virgo
Date Aquired 04/28/2003
Camera ST-2000XM with CFW-8 and AO-7
Exposure 19X5 Min L, 5X10 Min R (2x2) , 5X5 Min G  (2x2), 5X8 min B (2x2)
Telescope Celestron C11
Mount Losmandy G11

 

The Sombrero a spiral galaxy like the Milky Way that we see nearly edge on, and the rim of the Sombrero is made up of a dust band around the edge of the galaxy. The bulge at the nucleus of the galaxy is several billion times the size of the of the Milky Way's.
 
Aside from being the most Mexican of galaxies, M104's claim to fame is to be the first galaxy to be recognized for what it really was; an island of stars just like our own Milky Way galaxy. I always find it amazing that as recent as the time when my Grandfathers were babies, and Einstein was doing his famous work on relativity, we really didn't know that the universe was made up of millions of galaxies, each with billions of stars. It was thought that all the stars in the universe were the ones in the Milky Way, and that Galaxies were just some sort of nebula. In 1912, Vesto Silpher found that M104 was moving too fast to be inside our Galaxy, and in the 1920s, Edwin Hubble (the guy who the space telescope is named after), used this data to develop our modern understanding of the expanding universe started by the Big Bang.

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