New Eta Carina Nebula

This photograph of this magnificent nebula in the constellation Carina was acquired on March 16, 2013.
It is the result of 47 frames, 20 darks, 20 flats and 20 offsets.
We used the same telescope. We used the modified Canon 450D camera and a Celestron antipollution filter.
These are pictures taken at ISO 1600 and with an exposure of 1 minute.