Monday, 19 December 2022

The Pelican nebula and the North America nebula

IC5070, IC5067. the Pelican nebula . This patch of nebulosity lies just west of the North American nebula in the constellation of Cygnus the Swan. I took this image under very clear sky conditions with full moon light to contend with. Stars was only visible down to magnitude 4. The telescope I was using was a 4 inch f/6.3 refractor with a Vixen Atlux mount, PHD auto guiding, a set of Astronomik narrowband filters and an Atik 383L mono CCD camera. I captured five minute sub-frames with matching dark frames and combined them with bias frames to reduce readout nose and flat field frames to reduce the effect of vignetting in the final image. The total exposure times were 60 minutes using a H Alpha filter, 35 minutes using an O111 filter, then the clouds rolled in and I only managed to capture 15 minutes using a S11 filter.


NGC700 was similarly imaged

The two images were combined into a mosaic