Messier 55 (NGC 6809)
From time to time I obtain data sets from remote observatories. One of these providers is the Goldfield Astronomical Observatory with telescopes in Australia. One of the data sets I received, was data from the globular cluster M55 in the constellation Sagittarius.
The images were taken with the following equipment:
| Location | Goldfield Astronomical Observatory, Australia |
| Telescope | Takahashi Mewlon 250 |
| Focal length [mm] | 2500 |
| Focal ratio | 10 |
| Mount | ASA DDM 60 |
| Camera | ZWO ASI 094MC |
| Filter | OSC |
| Exposure time [min] | 90 |
| Resolution | 0,40″/px |
Data calibration and registration and the final processing was done with PixInsight. The result was as follows:
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