Sharpless 16/18/19/20/21 H II region in Sagittarius near the centre of our galaxy
Camera: Moravian G2 8300
Filters: 31mm unmounted Optolong
Optic: Televue 102 f/7
Mount: Ioptron CEM60 HP
Autoguider: camera Magzero 5m on SW 70/500, Phd guiding
Frames Ha 7nm: 7X600sec – RGB: 4X600sec each – Bin1 -25°
Processing: Pixinsight, Photoshop
Author: Carlo Rocchi
