NGC 6309 is a very small planetary nebula in constellation Ophiuchus at an uncertain distance of about 7,000 light-years.
It is also known as "Box" nebula, why? I would
rather call it the "Ear" nebula...
Nebula detail, sampled at .35"/pixel. Some few details seem visible, but could be artefacts.
See the Hubble Space Telescope image