M18 - Open Star Cluster
| Object | Open Star Cluster (M18), in Sagittarius | |
| Telescope (Photo) | Meade LX200GPS 12” SCT @ f/6.3 | |
| Telescope (Guiding) | Meade ETX-90 OTA Piggybacked to Meade LX200GPS 12" SCT | |
| Camera (Photo) | Canon 20Da DSLR | |
| Camera (Guiding) | Meade DSI Pro II w/Autostar Envisage | |
| Exposure Detail | Median combination of 8 images at 60 seconds each, ISO400; RAW file conversion, full calibration (bias, flat, dark), and initial image processing using ImagesPlus 2.82; final image processing using Photoshop CS3 | |
| Location | Caesar Creek State Park, Ohio (N39.513, W84.020) | |
| Date | 07/07/07 |