Observation Log

At 53x with the 35mm eyepiece in the 368mm reflector, M 67 appears as a large, rich, open cluster of approximately twenty-five to thirty bright stars that fills approximately one-quarter of the eyepiece field of view. The cluster has a roughly circular shape and many fainter stars are evident within the extent of the cluster using both direct and averted vision. The stars in the cluster exhibit a large range of magnitudes with one bright eighth magnitude star on the northeastern edge of the cluster. The estimated Trumpler classification is II 3 r.

At 75x with the 16mm eyepiece in the 150mm reflector, M 67 appears as a small, compact, dense cluster with many arcs of stars extending from the center of the cluster. Averted vision reveals many fainter members and the cluster contains a wide range of magnitudes.

At 55x in the 150mm Newtonian with the 22mm eyepiece, M67 appears as a small, round, rich, compressed cluster of stars. A dense arc of stars lies on the eastern side of the cluster.

With the 203mm SCT at 56x in the 40mm eyepiece, M67 appears as a small, dense, compressed cluster of mostly fainter stars. A semi-circle pattern of stars lies along one side of the cluster.

With the 203mm SCT at 50x in the 40mm eyepiece, M67 appears as a large, concentrated cluster of mostly faint members. There are twenty to twenty five bright members scattered throughout the cluster. Averted vision reveals many more faint stars concentrated around the clusters center. The clusters overall shape is nearly circular.