The Helix Nebula in Ha. Imaged from a fairly light polluted location, I’m about 15 km from the CBD of Melbourne. 10 Subs were used at 1500 sec. Guiding was through the Ha filter at 10 sec integrations using the on board guide chip.
All images where calibrated, aligned, and stacked using CCDStack2. From here, I used Photoshop CS 6 to perform the image enhancements, levels, and curve adjustments.
https://www.flickr.com/photos/978070...57646565068452
Full Resolution shot:
https://farm4.staticflickr.com/3850/...11f58650_o.jpg
The instrument used was a 10" RCOS, AP-900 mount, STL-11000 Mono CCD running at -15 C, Baader Ha filter. Image capture software was CCDSoft / TheSkyX / ASCOM Poth.
Terry