| Object info: | |
| Common name: | North-America nebula |
| Catalog code: | NGC 7000 |
| Object type: | emission Nebula |
| Constellation: | Cygnus |
| Object size: | 3 degrees |
| Imaging info: | |
| imaging date: | 23 October 2011 |
| Optics: | Takumar 135mm f/3.5 |
| Effective focal length: | 135mm |
| Camera & filters: | Canon EOS20D modified and 12nm H-alpha filter |
| Exposure & camera settings: | `12x15min@ISO 1600 Halpha and 60x3min RGB |
| Imaging software: | Nebulosity 2.3 |
| Mount: | Vixen GP |
| Guiding details: | autoguiding with PHD 12.1 and 550m refractor and DSI I camera |
| Image processing: | |
| processing date: | 24 October 2011 |
| calibration frames: | 30 darks and 20 flats from calibration library. |
| stacking & calibration software: | Nebulosity 2.4.1 |
| Postprocessing: | Alle done in Nebulosity. In short: I made 2 separate calibrated stacks. One for Halpha and one for RGB. Then the RGB stack was split in 3 separate component files for Red, Green and Blue. Then I aligned and normalized the intensities of the the Halpha stack with the other three. Then a recombine of Halpha, Green and Blue channel and some postprocessing using level and curves. |
| Local conditions: | |
| Location: | Stroe |