Wallpaper author:
ian howarth
25 Jun 2020
The Seagull's Head
The 'Seagull Nebula', IC 2177, is colourful overall:
https://telescope.live/gallery/66
https://www.facebook.com/telescopelive/photos/a.2404558243125361/2549333541981163
This is because of the range of ionization in the gas, which results in emission from different ions, at different wavelength.
This closeup of the 'head' of the seagull shows fine structural details, but is chromatically somewhat bland, because the gas visible here is all in a low-ionization state.
Dataset from which the image was processed
Sh 2-292
5 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................FLI ProLine PL9000
- Target coordinates............................................................................................................................RA 106.1042 Dec -10.45
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................10 Dec 2020 - 08 Jan 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 1133 | 2h50m | 9 |
| Luminance | 450 | 1h | 8 |
| Red | 450 | 1h | 8 |
| Green | 450 | 1h | 8 |
| Blue | 450 | 1h | 8 |