NGC 6729 is a reflection

Reflection nebula

In Astronomy, reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars. The energy from the nearby star, or stars, is insufficient to ionize the gas of the nebula to create an emission nebula, but is enough to give sufficient scattering to make the dust...

/emission

Emission nebula

An emission nebula is a cloud of ionized gas emitting light of various colors. The most common source of ionization is high-energy photons emitted from a nearby hot star...

 nebula in the constellation Corona Australis

Corona Australis

Corona Australis or Corona Austrina is a constellation. Its name means "southern crown", and it contrasts with Corona Borealis, the northern crown...

. It was discovered by Johann Friedrich Julius Schmidt

Johann Friedrich Julius Schmidt

Johann Friedrich Julius Schmidt was a German astronomer and geophysicist.-Biography:...

in 1861.

This fan-shaped nebula opens from the star R Coronae Australi toward the star T CrA to the south-east. R CrA is a pre-main-sequence star in the Corona Australis molecular complex, one of the closer star-forming regions of the galaxy.