Oli, Sheila, Jennie Wright, Ryan Short, Jenne Driggers

Today we aligned the ISCT1 refl and pop paths.  First, we remembered that both refl and pop are now on the same top periscope mirror: 84558.  Then we realized that the RF signal from PRMI flashes on POPAIR A was unrelated to light on the diode, it didn't go away when we blocked the diode, closed the beam diverter or shutter, or increase when we did get beam on the diode.  

We had a bit of difficulty aligning onto the pop diodes because PRMI flashes are infrequent.  With 2W PRMI flashes right now, we have about 1/10th of the POPAIR B LF light we expect, and roughly similar low RF18 flashes.