M13 – Hercules cluster
Observing date: 2015-08-29
Observing site: Ekerö, Sweden
Temperature: 16 °C
Telescope: Skywatcher Equinox 80ED
Mount: Meade fork mount
Photographic equipment: Canon EOS 600D -modified
Other optical equipment: Skywatcher Field Flattener 1.0X, Astronomik CLS-filter
Exposure: 167x15sek
Other info: –
Processing: Stacked in Deep sky stacker and processed in Photoshop CS6
Photographer(s): Leif Ratzinger & Jakob Sagatowski