This picture has been taken with a modified Canon EOS 60D. A special Hα Filter has been used to present the distribution of the hydrogen gas within the famous star formation Cygnus.
Figure 1: Colored impression of the interstellar gas distribution in the milky way within Cygnus star formation. Broad band filters include both hydrogen Hα and nitrogen N-II spectral lines.
Figure 2: Contrasted black and white image of the Cygnus star formation.
| Telescope: | Canon EF 100 mm teleoptics mounted on Meade LXD75 |
| Camera: | Canon EOS 60D, clear glass modification (internal filter removed), 400 ASA |
| Filter: | Astronomik Hα 6nm Filter |
| Exposure: | 20 x 60s |
| Calibration: | Dark (100 images), Sky-Flat (100 images) |
| Image Processing: | Shift & add with correction of subpixel movement, improved noise reduction |
| Date of exposure: | 03 November 2011 |
| Software: | ArgusPro SE, color saturation enhanced with Photoshop CS3 |
| Remark: |