| Optics | Borg ED101 at f/8.8 |
| Camera | Canon EOS20D modified |
| Filters | Astronomik CLS clip filter |
| Date | 9 and 10 Feb 2008 |
| Location | Antares Observatory |
| Sky Conditions | mag 5 sky |
| Exposure | 62x10min ISO800 total: 10h 20min |
| Programs used | Fitswork, CCDNight XP, Photoshop |
| Notes | Goal of this image was to bring out the very dim tidal tail of NGC3628. Unfortunately its brightness was lower than I expected. Despite the accumulated exposure time only the bright part of the tail can be seen. This may have two reasons: Too images of the 20D CMOS chip were too noisy (readout noise, dark current) or the cut off of light smaller than 400nm due to the CLS filter. |
Click on the image above for an inverted image, showing more details of the tidal tail. For more information click here or here.