NGC 6888 - The Crescent Nebula in Ha

Image taken in August 2012 with IKHAROS/astro.phad 8" F8 Ritchey Chretien telescope on Avalon Instruments M-Uno mount with Starlight Xpress SXVR-H694 CCD Camera through Astrodon 5nm Ha Filter.

3 hrs Ha.

FWHM on sub exposures around 2"
NGC 6888 - The Crescent Nebula in Ha