Messier 46 and a Planetary Nebula

 Over a couple of nights I have used the camera as an enhanced eye, looking at all sorts of objects (Messier objects, open  clusters, galaxies, etc.). One that I had not seen before and took my fancy for a photo target was MEssier 46, which has in the space between us and it, a planetary nebula.

As my usual, not enough subs, especially in colour (8 min or thereabouts), plus 30 in L.

Wikpedia: Messier 46 or M46, also known as NGC 2437, is an open cluster of stars in the slightly southern constellation of Puppis. It was discovered by Charles Messier in 1771. Dreyer described it as "very bright, very rich, very large." It is about 5,000 light-years away. There are an estimated 500 stars in the cluster with a combined mass of 453 M☉, and it is thought to be a mid-range estimate of 251.2 million years old.

The planetary nebula NGC 2438 appears to lie within the cluster near its northern edge, but it is most likely unrelated since it does not share the cluster's radial velocity.