M13, The Great Cluster in Hercules
 | |
| large |
| Date | 06/13/2007 |
|---|---|
| Conditions | Transparency 3/5, Seeing 2/5, 20.2 mags/sq arcsec at zenith |
| Scope | Vixen VC200LDG @ f/9 |
| Filters | Baader UV-IR Cut |
| Camera | QHY-8 |
| Exposure | 5x300s, Gain 63, Offet 115 |
| Processing | ACP/MaximDL, acquisition; ImagesPlus, bayer interpolation, alignment/stacking, ddp, ARL; PS CS2, levels, curves, USM, Noel's Actions, space noise; Gradient Exterminator |