The Eastern Veil (Ha+OIII)HaOIII synthetic G May 2009
The Eastern Veil is part of a large supernova remnant lying in the constellation of Cygnus. The whole area is marked by filamenty areas of nebulosity composed predominantly of Ha and OIII gases. The data for this evening was captured over two consecutive nights (very rare in the UK!)
Scope: Takahashi FSQ 106
Camera: QSI 532ws
Filters: Astronomik 13nm Ha and OIII, Type II RGB for star layer.
Exposure details: HA and OIII both 29x300secs A small amount of RGB data was also captured to enhance star colour.
Captured and combined with Maxim. Further processing in Photoshop. For the luminence I processed the Ha and OIII seperately and then added OIII onto the Ha using lighten as the blend mode. To create the colour image I allocated Ha to red and the OIII to both green and blue. Given that OIII is a teal colour this seems logical. I processed an RGB image and layered the brighter star date onto the final image