NGC7000 and IC5070 nebula in Ha

This is a 6 frame mosaic of NGC 7000 North America nebula and IC 5070 Pelican nebula in Cygnus. I started the first sub exposures of this image in August 2010 and obtained the last frame in late September, 2011, which allowed me to produce this photograph. Each of the frames is made up of 11 x 1200 subexposures, giving a total exposure time of 22 hours. The final image is 27.5 millions pixels and 52.3 Mb.

They are quite a few interesting objects in this area, in the image below (not exactly a 100% crop), the Ferret is on the left, in the middle the dark oval eye of the Pelican with the Herbig Haro object at the end of that elephant trunk.

The image below shows one of Barnard's Dark nebula, B355, that chevron shaped object left of centre. In his book, A Photographic Atlas of selected regions of the Milky Way, E. E. Barnard passes comment on this "...is a dark, V-shaped spot (B355), pointing west, about 5' in length. This is perhaps an opening in the nebulosity".

Next year, I start collecting the OIII and SII data for a colour version

Designation: NGC 7000 - Caldwell 20 and IC 5070
Constellation: Cygnus.
Distance 1, 800 lights years.
Imaging scope - Takahashi FSQ-106ED f5 at prime focus
Camera - QSI 583 wsg CCD
Filter - Astrodon 3 nm Ha
Autoguiding - OAG, Starlight Express Lodestar guide camera, EQ6 Pro mount and PHD guiding software.
Exposure - Ha - 6 frames each frame 11 x 1200 seconds
Darks, Dark flats and Flats used.
Software - Nebulosity for focus, acquisition, aligning and stacking. Then processed in PixInsight