January 19, 2011

M13 globular cluster in Hercules

To start with my first astronomical entry i have to explain a bit about what the name M13 exactly is and what kind of object it is.

The name M13 is short for the 13th deep space object on the list compiled by the French astronomer Charles Messier. Charles Messier lived from the 26th of june 1730 until the 12th of april 1817. He identified 110 objects and listed them under M or Messier numbers.

M13 is a very easy object to find because it stands high in the summer sky in the constellation of Hercules. It is relatively large and bright so even in a not pitch black sky it is to been seen with the naked eye.

The technical designation for it is a "globular cluster of stars" and contains hundreds of thousands of stars.

A small telescope will let you see it as a fuzzy ball much larger that individual stars around it and a bigger telescope will let you see a lot of the individual stars in it. But the best way to enjoy it is to photograph it.


This picture was made by stacking 20 individual photo's on top of each other increasing the brightness of the object and than adjusting the values of the stacked image to bring out the best!

In the near future i will explain a bit more about astrophotography and photo stacking.

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