The Bubble Nebula, NGC 7635, is 7 light-years across – about one-and-a-half times the distance from our sun to its nearest stellar neighbor, Alpha Centauri – and resides 7,100 light-years from Earth in the constellation Cassiopeia. Sharpless 157, also known as the Lobster Claw Nebula (lower right), is a bright emission nebula in the constellation Cassiopeia. It lies just south of the Bubble Nebula.

Technical info: TS 80mm f6 APO triplet refractor - Canon 40D - IDAS Light Pollution Filter LP2 - Exposure: 72x 180sec and 28x 240sec - total (5hours 28min)