My 404 error page...

You seemed to have followed a broken link!

Note: up to 2023 October my webpages were hosted on https://www.mrao.cam.ac.uk/~dag/. But this webserver is being revised, so all these webpages are now hosted on https://people.phy.cam.ac.uk/dag9/ instead. Please revise any bookmarks/links pointing to the old webpages.

Take your pick from the following:

my Cubehelix colour scheme page?
my addresses page?
my teaching page?
my research page?
my publications page?

or else wait a while, and you should be redirected to my home page, and you can start from there.