Veil in OIII/H-a RGB with E-180

NGC6960 with the bright yellow star is at the lower right.  The vertical structure opening up into a fan-shaped structrue to the left of NGC6960 is NGC6979, Pickering’s Triangle/Wisp.  The bright curved structure to the left is NGC6974.
Guided with BORG 76ED APO and STL remote guide camera. Data acquired with CCDAutoPilot 2.53, processed in CCDStack and Photoshop CS2 using clipped layer masks. Short RGB stars blended in Photoshop.  Astrodon 6 nm H-a and OIII. 15 min sub-exposures. Astrodon I-Series filters with 1 min sub-exposures.  No change of focus among all 5 filters with ROBO-FOCUS and FocusMax.  Flats taken after lights with AVA electro-luminiscent flat panel.  
Here is just the H-a image, inverted and sharpened to show the intricate details of the filaments. Click on image to enlarge.