In my opinion, Messier 13 is the most beautiful globular cluster in our galaxy. Last time when I photographed this cluster, I used focal reducer (don’t ask me why), therefore I decided to recapture it with focal length 1060 mm. Small galaxy in upper right corner is called NGC 6209.
Technical details:
Telescope | Newton 254/1000 mm |
Aperture | 254 mm |
Focal length | 1060 mm |
Mount | Gemini G53f |
Autoguiding | ZWO 174MM, TS 60/240 mm |
Camera | ZWO 071 Pro @-10°C |
Corrector | Explore Scientific HR coma corrector |
Filters | Astronomik L-1 - UV IR Block Filter |
Exposure | 55x180s, Gain 94, bin 1x1, |
Date | 2019-06-07 |