NGC6888, the Crescent Nebula in Cygnus.
This image is a stack of 10 eight minute exposures shot through a Hydrogen-alpha filter.
The exposures were acquired using an SXV-H9 CCD camera on a Vixen R200SS 8" f/4 Newtonian equipped with a Paracorr.
The exposures were calibrated, defect-corrected and stacked using AIP4WIN.
A few new experimental tools were applied to enhance the structure.
The image was acquired during a full moon.
This image has been resampled down from its original size of 1392x1040.