M 16 and M 17 in the constellations Snake, Archer and Shield
The Milky Way region around M16 and M17 contains a large number of further fainter nebulae. In addition to the large emission nebula regions, the mosaic shows two other extended H-II regions, Sharpless 2-54 (LBN 72) and IC 4701, as well as 4 open star clusters: Messier 18, NGC 6590, NGC 6604, and Trumpler 32. This mosaic consists of 5 single frames with a total exposure time of nearly 8.5 hours and shows an area of about 2 x 6 degrees along the galactic equator.
| Date: | 18.-21.09.2019 |
| Optics: | Pentax SDP 105 |
| Aperture: | 105 mm |
| Focal Length: | with 0.72x Reducer f=510 mm |
| Camera: | Canon EOS 700Dac |
| Exposure: | 5-frame mosaic, total 100 x 300 s |
| Location: | Chamaeleon Observatory, Onjala Lodge, Namibia |
| Processing: | Deep Sky Stacker, Photoshop |
| Diameter: | 100 light years (M 16) 50 light years (M 17) |
| Distance: | 5,700 light years (M 16) 5,500 light years (M 17) |
