False-colour photo of Stephan's Quartet & NGC 7320

False-colour photo of Stephan's Quartet & NGC 7320

R900/0033 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 66.6MB

Downloadable file size: 7.1MB

Price image Pricing

Please login to use the price calculator


Caption: Image-processed optical photograph of Stephan's Quartet group of galaxies and NGC 7320. The colour coding illustrates the different red shift values of the 4 members of the Quartet (coded red because of their higher red shift) & NGC 7320 (coded pale blue because of its lower red shift). The amount of red shift is a function of the velocity at which an object is receding relative to Earth, & therefore - according to the standard theory of an expanding universe - of its distance from Earth. The group was known as Stephan's Quintet until the anomalous red shift of NGC 7320 showed that it lies in front of the other four. The two central members of the Quartet are interacting galaxies.

Release details: Model release not required. Property release not required.

Keywords: astronomy, cluster, cosmology, expansion, false-coloured, galactic, galaxies, galaxy, group, in universe, ngc 7317, ngc 7318, ngc 7319, ngc 7320, red shift, science, stephan's quartet, stephan's quintet, universe

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.