V645 Cyg, The Duck Nebula , a young star in Cygnus. Images taken in 1985 show a distinct narrow feature which has since disappeared. The feature was likely a beam of light escaping through a small opening in a shroud of dust clouds. Movement of the clouds since 1985 has closed the hole, and turned off the illumination in this part of the nebula. This image was taken with the new, full-field Ellis R filter.
Scattered moonlight affects the upper half of the image.
The following commissioning photos are thanks to ESI P.I. Joe Miller. Jim Bell guides ESI into the telescope. The ESI crew. Left to right, Jim Burrous, Jerry Nelson, Dave Cowley, and Andy Sheinis. The Keck domes seen from Subaru.