This image was taken on two separate evenings under clear sky conditions, stars were visible down to magnitude five.
I was using a 130mm lens piggybacked on my ten inch reflector, an Atik 383L mono CCD camera , a Vixen Atlux mount, PHD auto guiding and a set of Astronomik narrowband filters.
I captured five minute seb 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 time was 90 minutes using a HA filter, 30 minutes using an O111 filter, 30 minutes using a S11 filter and 10 minutes using a blue filter.
The Rosette Nebula
RGB
Hubble palette
