Phase-IAP Date, GMT Pitch Yaw dX Established arcmin arcmin mm Comments --------- ----------- ------ ------ -- -------- 1-IAP0 0.0 0.0 0.000 Aligned X-ARM, HRMA fixed on blocks 1-IAP1 364 18:00 0.0 0.0 0.000 Aligned X-ARM, original pre-vacuum IAP 1-IAP2 001 05:00 -1.1 -1.3 0.000 Initial failure IAP, calculated from encoder counts 1-IAP3 001 12:15 -1.5 -0.5 0.000 X-ray alignment test, change -0.4 pitch and +0.8 yaw wrt 1-IAP2 1-IAP4 002 18:22 0.0 0.0 0.000 Aligned X-ARM 1-IAP5 005 16:11 0.0 -1.0 0.000 X-ray quadrant-balance test, change -1.0 yaw wrt 1-IAP4 1-IAP6 026 08:08 0.0 -1.0 0.000 Same as 1-IAP5, but encoders zeroed with rack off 1-IAP7 air 027 20:00 0.0 0.0 0.000 Aligned X-ARM air, GSE @ 70 F 1-IAP7 028 15:01 0.0 0.0 0.000 Aligned X-ARM, GSE @ 67 F 1-IAP7a 029 16:52 0.0 0.0 0.000 Aligned X-ARM, GSE @ 55 F (Yaw 47 arcsec from 1-IAP7) 1-IAP7b 029 20:32 0.0 0.0 0.000 Aligned X-ARM, GSE @ 54 F (Pitch 7 arcsec from 1-IAP7a) 1-IAP8 036 18:00 0.0 0.0 0.000 Aligned X-ARM, GSE @ 52.5 F (Encoders nonzero at home) 2-IAP1 053 17:38 0.0 0.0 0.000 Aligned X-ARM 2-IAP2 058 23:16 0.0 0.0 0.203 Aligned X-ARM, HRMA axial displacement when setting IAP 2-IAP3 059 17:38 0.0 0.0 1.549 Aligned X-ARM, HRMA axial displacement when setting IAP 2-IAP4 064 20:38 0.0 0.0 0.076 Aligned X-ARM, HRMA axial displacement when setting IAP 2-IAP5 079 15:00 0.0 0.0 0.000 Aligned X-ARM 2-IAP6 091 05:15 0.0 0.0 0.000 Aligned X-ARM, special IAP for ghost-image search Note a: Column 1 gives Calibration phase hyphen Initial Alignment Position sequence number. Note b: Columns 3 and 4 give HRMA pitch and yaw relative to XRCF Alignment Reference Mirror (X-ARM). Note c: Column 5 gives axial error resulting from incorrect software algorithm for HRMA actuators.