the automated planet finder -lrb- apf -rrb- consists of a 2.4-metre automated telescope and enclosure , and a high-resolution spectrograph .
the spectrograph takes starlight from the telescope and spreads it into a rainbow of colours , splitting the light into a spectrum of thousands of different wavelengths that can be measured .
the automated planet finder -lrb- apf -rrb- consists of a 2.4-metre automated telescope and enclosure , and a high-resolution spectrograph .