Crab Nebula, M1
The Crab Nebula is a supernova remnant and pulsar wind nebula in the constellation of Taurus. It is 6,300 light years away from our Earth. A diameter of Crab nebula is approximately 11ly. It is also expanding at a rate of 1,500 kilometers per second. This nebula is visible through the telescope with naked eyes. It was first observed in 1731.
Optics: Takahashi BRC250, EM200 Mount
Camera: SBIG ST-2000XM, Astronomik Type2C LRGB Filter
Exposure: L:5minutesx30, RGB: 5minutesx5
Processing Software: Stellaimage5, PhotoshopCS
Location: Takarazuka city, Hyogo Prefecture, 2005