Kemble s Cascade . ... Credit Copyright: Processing - Noel Carboni , Imaging - Greg Parker, New Forest Observatory Explanation: An asterism is just a recognized pattern of stars that is not one the 88 official constellations. ... Known as Kemble's Cascade , it contains about 20 stars nearly in a row, stretching over five times the width of a full moon . Tumbling from the upper right to lower left in the picture, Kemble's Cascade was made popular by astronomy enthusiast Lucian Kemble . ...