This image was taken from the Gower Peninsula under clear sky conditions with stars visible down to about magnitude 5.8. I was using a Vixen DX mount, an Atik 383L mono CCD camera, a 200mm lens with a set of astronomik narrowband and RGB filters. I took two minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of noise and vignetting in the final image.
The total exposure time was 20 minutes using an O111 filter, 60 minutes using a H Alpha filter, 60 minutes using an IDAS filter, 45 minutes using a blue filter and 30 minutes using green and red filters.
Equipment used
M31, The Andromeda Galaxy
