Sharpless 170

SH2-170

Emission nebula in Cassiopeia approx 7500 light years distant. Imaged using 8 inch RC telescope @ f/8 unguided using Protrack, QSI 683 mono camera, MyT mount. Exposure times RGB 20 x 240 seconds each channel, Lum 40 x 480 seconds, Hydrogen Alpha 29×900 seconds