M 101 - The Pinwheel Galaxy
M101 – The “Pinwheel Galaxy”
I wouldn't bother you with this one, because I could only collect 8 images at 4 minutes each (I planned 50) before it started to get cloudy, which is not enough to get a less noisy and brighter image, but this picture contains something special.
The galaxy is about 27 million lightyears away from here. On September 24, 2011, a supernova (called SN 2011fe, marked by the two pointers) in a very early stadium was discovered in this galaxy. A supernova is the explosion of a star for quite a number of reasons. In this case, a small white dwarf-star drew gas from a close by companion. The gain of mass, at a certain stage, lead to a gravitational collapse and it went off in an explosion.
By the 28th of that month, the star became as bright as the center of the galaxy. This single star, for a short time, was then setting free more energy, than all of the other stars in that Galaxy together. And there are Billions of them! After that he dimmed out relatively quickly, but it was still visible in late March, when I took this Photo.
|Exposure:||8 x 240s, ISO800|
|Camera:||Canon EOS 1100D, modified|
|Telescope:||10" GSO RC, 2000mm|
|Guiding:||OAG with Lodestar and PHD|
|EIP:||Fitswork and Gimp|