RCW 19

The RCW catalogue was compiled by Alexander William Rodgers, Colin T. Campbell and John Bartlett Whiteoak. They catalogued southern nebulae while working under Bart Bok at the Mount Stromlo Observatory in Australia in the 1960s. It contains 182 objects, including many of the earlier Gum catalogue (84 items) objects.
The number 19 in the RCW list is an emission nebula also known as Gum 10, located in the constellation Puppis. It's part of a giant molecular cloud and is approximately 10.000 light-years away from Earth and 200.000 solar masses in weight. This nebula is ionized by the O7 giant star HD 69464.
Exposure time: 8h20’ SHO (Narrowband)