Thursday, March 30, 2017

110 YEARS EXPANSION OF CRAB NEBULA Taken by Peter Rosén on March 29, 2017 @ Centra Stockholm, Sweden

The Crab Nebula, or M1, is the expanding remains of a supernova that exploded in the year 1054.
I have assembled 5 images that span at least 110 years, possibly more. I have then adjusted the luminosity and contrast so that the images would match as closely as possible and I have used the Hubble image for the color component of all 5 images in the animation.
It is interesting to note the bright star up to the right that has moved by quite a distance. Its proper motion is about 0.25 arc seconds/year.

*Image 1 was taken at the Lick observatory at the end of the 19th or the beginning of the 20th century.

* Image 2 was taken with the 200-inch Hale telescope in 1950

* Image 3 is a POSSII-Red plate from 1990

* Image 4 is the renowned Hubble image photographed in the year 2000.

* Image 5 was take by Adam Block/Mount Lemmon SkyCenter/University of Arizona with a 32-inch telescope in 2012.

All images used by fair-use permission

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