Yesterday and today, we made excellent progress. The WASP team performed several tests of the pointing system. Yesterday evening, we calibrated the polarimeter with an X-ray gun. The gun uses a high voltage (50,000 V) to accelerate electrons. The electrons, impinging on a target, emit X-rays. We use a long stainless steel tube as a collimator to produce a beam of X-rays with a sub-mm cross-section. We shot the beam into the polarimeter to record the response for different beam offsets from the center of the polarimeter. We recorded a lot of data with a rate exceeding a few kHz. We hope to be able to be declared flight ready tomorrow (Sunday, Sept. 4), which means we would be able to take advantage of the next flight opportunity.