Deep Sky
NGC2438 & M46


M46 – open cluster
NGC 2438 Planetary Nebula
Constellation Puppis
Mag 9.5
Distance 5,500 light-years
Was discovered by Charge Messier in 1771, and thought to be some100 million years old, young  for stars.  The planetary nebula ngc 2438, was discovered by William Herschel in 1786,  appears to lie within the cluster near it northern edge, most likely it is unrelated since it does not share the cluster’s radial velocity since it is only about 2900 light years away.

10 images 20 sec