Open Cluster M39
Description here
Photo Details

Telescope: FSQ106EDX (530 mm) Takahashi

Camera: ST-8300M, Sbig Filter wheel, Baader 36mm round HLRGB filters

Mount: NJP Takahashi

Guiding: Orion ST80 with Orion SS Autoguider

Exposure: HRGB 10h Ha 14x1200sek, R 6x300sec, G 6x300sec, B 6x300sec

When: July - August 2012

Other information: very good transparency, very good seeing, taken in the city of Tarnow