This image was taken with 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 combined them with flat field frames to reduce the effect of vignetting in the final image.
The total exposure times were 90 minutes using an IDAS filter, 25 minutes using a H-alpha filter, 20 minutes using an OIII filter and 15 minutes using a blue filter. The exposures with the IDAS filter were made with the camera in x1 bin mode. However, the exposures with the narrowband filters were made with the camera in x2 bin mode.
M101
