This patch of nebulosity lies about one degree east of the Iris nebula, NGC 7023 in the constellation of Cephus.
The sky conditions were not very good on the first evening with very high cirrus clouds, however on the second evening it was very clear. There was no moonlight only light pollution to contend with. Stars were visible down to about magnitude 4.5.
I was using my ten inch F/4.8 reflector, a Vixen Atlux mount, PHD auto guiding, a set of Astronomik narrowband filters, a blue filter 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 noise and vignetting in the final image.
The total exposure time was three hours using a H Alpha filter, 30 minutes using an O111 filter and 35 minutes using a blue filter.
