Today, after a long long cycling tour the weather forecast made me smile 🙂 There was a good chance that most of the clouds will go away between 23:00 and 2:00. Since the moon is going to rise at 2:11am there is a short but sufficient window to do some CCD imaging. Since I only have free view to the south from home, the position of M51 is a quite good compromise. The seeing with my f/5 GSO Newton (F=1000mm) is around 2.7″ – so this is more or less average.
 | Date | 2015/05/10 |
 | Location | Böblingen / Germany |
 | Object | Whirlpool Galaxy (M51) |
 | Camera | Atik383L+ |
 | Guiding | yes, QHY5-II Mono via OAG |
 | Telescope | 8" GSO Newtonian |
 | Barlow lens | none |
 | Mount | EQ6Â Syntrek |
 | Cooling | -15°C |
 | Luminance | 6x, 600s, bin: 1x1 |
 | Red | 5x, 150s, bin: 2x2 |
 | Green | 5x, 150s, bin: 2x2 |
 | Blue | 5x, 150s, bin: 2x2 |
 | Dark | 5x |
 | Flat | 10x |
 | Total exposure | ~1h40min. |
Last updated: December 27, 2015 at 17:09 pm
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