Messier 7, sometimes called the Ptolemy Cluster, is an open cluster located in between constellations Sagittarius and Scorpius. The cluster is visually located on the galactic plane of the Milky Way, therefore there are many stars in the background. The cluster is badly visible from Central Europe. Much better opportunities to observe or photograph this cluster have astronomers or astrophotographers in southern countries. My last attempt to capture it in Greece was constantly disturbed by the weather, therefore when I was again in the South, specifically at Fuerteventura, I didn’t hesitate and recapture this beautiful cluster.
Technical details:
Telescope | Newton 150/600 mm |
Aperture | 150 mm |
Focal length | 570 mm |
Mount | Rainbow Astro RST 135 |
Autoguiding | ZWO 174MM, Guidescope 30 mm |
Camera | ZWO 071 Pro @-0°C |
Corrector | TS MaxField |
Filters | No |
Exposure | 64x180s, Gain 94, bin 1x1, |
Date | 2020-07-21 |
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