Dr George Dransfield says the decision to cut funding is "short-sighted".
When Jodrell Bank Observatory was built, the site was seen as gamechanger for radio astronomy.
Astronomers warn it would tear the heart out of UK science, and leave a generation untrained.
Composer Hannah Peel's piece celebrates the UK's largest radio telescope in Cheshire, and has been recorded by the BBC Philharmonic Orchestra.
Bluedot, which is held where the fifth Doctor regenerated, will see Whovian delights, organisers say.
Grace Jones will be joined by Pavement and Roisin Murphy at the top of Bluedot's bill, organisers say.
Tim Peake's appearance tops a weekend of science, song and stand-up at Bluedot festival in Cheshire.
The First Light Pavilion will showcase archives and artefacts as well as animations and projections.
