Amateur Spectroscopy: Cracking starlight’s hidden code – by Hugh Allen

This is the title of the talk coming up at the next society meeting on the 8th June 2019.

Analysis of starlight by spectroscopy is inspirational and is a fundamental pillar of professional astronomy. But take a look inside popular astronomy magazines and you will not find much mention of amateur spectroscopy. The language of spectroscopy can seem obscure, the physics a bit daunting and for many the technique is poorly understood. The light from stars is however like the cover of a book. Carefully spreading the starlight into a spectrum is like opening the book’s pages. A new world is revealed where there is beauty, science and detective work in equal measure, and it is all readily accessible to the amateur astronomer. The talk will demystify amateur spectroscopy and show how it offers a unique way to observe the Universe.

The atomic structure of hydrogen is revealed in the light from the bright, A-class star Alioth in The Plough. Taken using an 8″ Meade LX90 telescope, Atik 314L+ mono camera, Alpy 600 spectroscope with a 23µ slit, RSpec software.