Catalogue and alternative designations M8, M20 and NGC 6559.  This grouping is often called the "Sagittarius triplet".  M8 is the Lagoon Nebula and M20 is the Trifid Nebula.
Type Emission Nebulae
Position 18 03.8, -24 23
Constellation Sagittarius
Camera and Telescope STL11000M and Epsilon180ED
Focal Ratio F2.8
Exposure Details (HaR)GB with red blended with H alpha.  All colours binned 1x1.  Red, green and blue obtained using Astrodon filters, hydrogen alpha with Astronomik 10nm filter.  Ha:R:G:B 75:20:20:20
Description A particularly attractive grouping of nebulae.