The Crab Pulsar versus the surrounding nebula, photographed by the Hubble Space Telescope through the 547nm filter (i.e., green light), 7 August 2000 to 17 April 2001.  (Proposal ID 7407.)
I spent a bit of time trying to clean up the raw Hubble images; you can see what I started with here.  At times my code gets a little over-zealous, often thinking that the stars in the top left are noise.  The professionals’ version, also showing animation from Chandra pictures, can be seen, e.g., here.

The Crab Pulsar versus the surrounding nebula, photographed by the Hubble Space Telescope through the 547nm filter (i.e., green light), 7 August 2000 to 17 April 2001.  (Proposal ID 7407.)

I spent a bit of time trying to clean up the raw Hubble images; you can see what I started with here.  At times my code gets a little over-zealous, often thinking that the stars in the top left are noise.  The professionals’ version, also showing animation from Chandra pictures, can be seen, e.g., here.