Peter, Jason, TJ, Nutsinee

This morning we rotated the beam splitter mount and aligned the green beam to the newly installed GigE camera. In theory the path of the green and the returned sled beam should overlap, but the camera didn't see the SLED even with the green well aligned. Given that the SLED shouldn't be too far off we tried installing a 800nm bandpass filter in front of the camera and randomly pitched and yawed the BS hoping something would show up, that didn't work. Many hours were spent trying to directly align the return sled light to the camera, but seeing the beam in the first place was a challenge. Since the pickoff BS is a 90:10, with 10% being the light reflected to the GigE camera. We tried swapping out the old sled for a new spare. Still, we didn't get anything. We also tried to point the camera in front of the steering mirror (before sled hits the pickoff BS), we couldn't get anything either. The next step to take here is probably go through some document to make sure that the camera can actually see 790nm. We left the green beam aligned to the camera, removed the bandpass filter (which was temporary borrowed), and closed out around noon.

The old 790nm sled S/N 07.14.256 was replaced with a spare S/N 07.14.254. Since the old one wasn't totally dead, we kept it in the spared box. So currently there's only one 790nm (new) spare sled left.