This image of M108 was taken using my 10 inch f/4.8 reflector, A Vixen Atlux mount, PHD auto-guiding and an Atik 383L mono CCD camera.
I captured five minute sub-frames with matching dark frames and used flat fields to reduce the effect of vignetting in the final image.
The luminance data were captured with the camera set on x1 bin mode using an IDAS filter with a total exposure of 40 minutes. The colour data were captured with the camera set to x2 bin mode, with total exposure times of 20 minutes using a H-alpha filter, 15 minutes using an OIII filter and 10 minutes using a blue filter.
M108
