North America Nebula ( NGC7000) + Pelican Nebula ( IC5070/IC5067) in Cygnus
The Cygnus constellation contains huge areas of glowing gas, mainly hydrogen and oxygen. The above examples are the most famous ones, because of their conspicuous shapes. The image has been taken through a narrowband filter, allowing only to pass the spectral line of excited hydrogen.
Canon EOS 20D Modified Canon 20D mounted on a TMB 80mm/F6 + Televue 0.8x reducer/flattener + Astronomik Halpha filter. 12x600sec/ISO800. Calibration and stacking, averaging, color balancing, sharpening in Images Plus and Photoshop CS2.
hide exif