Open Cluster M46: This assembly of stars in a distance of about 5000 LY is one of the numerous Open Clusters in the constellation of Puppis just next to Canis Major or the Great Dog. It is a group of several hundert young (about 300 mio years old) blue-white stars, which can be observed nicely with binoculars or small telescopes.

At the rim of the cluster is the Planetary Nebula  NGC 2438 with its oval ringshape, which shows a several billion years old star at the end of its life time.

Object Open Cluster M46
Category Open Clusters
Designation M 046
Constellation Puppis
Optics TMB 130 f/6 with Field Flattener
Mount Astro-Physics 900 GTO
Camera QHY8/ALccd 6c
Exposure 7 x 10min IDAS LPS filter. Maxim DL for image acquisition
Calibration No
Guiding Meade DSI Pro II and Skywatcher ED80 as Guide Scope, Maxim DL as Guiding Software
Processing Maxim DL5, Photoshop
Location-Date Somerset West, South Africa - 31 Dec 2008
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