I got out this morning for observing Mars (see below) and found that it is near Messier 44 the Beehive Cluster (medieval "Manger") and will be through the next month until the 19th of December. With my ES 102 (F=660) and a 14mm eyepiece, I could not get them in the same field-...
wherein the length of the periphery of the D-shaped beehive relay is 290-460mm, the width of the periphery of the D-shaped beehive relay is 220-400mm, the height of the D-shaped beehive relay is 80-160mm, the thickness of the D-shaped beehive relay is 20-40mm, and two D-shaped...