# ====================================================================== # QMAP 16Jun96 - Flight 1 # ======================= # # Analysis Parameters - version 10apr98.par # ------------------- # # ---------------------------------------------------------------------- # 24sep97 th first run (see below) # 02dec97 th preliminary beams and calibration # 03feb98 th final phases # 18feb98 th corrected ccd x and y scales # 19feb98 th corrected beam offsets # 10apr98 th completely new calibration (final): # - radiometry offset subtracted # - calibration errors contain systematic error estimate # - measured center frequencies # - 1998eml calibration for Cas A # - individual channel fits contrained by combined pair fit # ====================================================================== # # date of observations and parameters obs_date 96 06 16 par_date 98 04 10 # # ccd scale wide or narrow, x and y, in cpix/pdeg ccd_scale_w 4430.3 -4250.0 # ccd_scale_n # # phase chopper -> radiometry, in syncs phase_rc_Ka1 +146 # these are the final phases phase_rc_Ka2 +141 phase_rc_Q1 +145 phase_rc_Q2 +140 phase_rc_Q3 +146 # no fit possible; used Q4 - 4 phase_rc_Q4 +141 # # phase pointing -> chopper, in syncs phase_cp -200 # average of all channels # # which UT to use: # 0 - data PC (associate by frame #) # 1 - GPS # 2 - pointing PC use_UT 0 # # beam offsets to fiducial camera, az and el, in degrees # offsets get added to the az, el # # these are the offsets from flight 2 + 1.37deg in el offset_Ka -1.42 6.48 # to the left and up - beam el 41... offset_Qa 1.23 6.48 # to the right and up - beam el 41... offset_Qb 1.24 3.88 # to the right and up - beam el 38... # # lvdt1 zero point offset (added directly to chopper angle, in degrees) # this looks good by eye for flight 1 lvdt1_offset 0 # # sync time to seconds, in seconds/sync sync_secs 3027.2 # chopper is 4.73Hz for all real data # # sync time offset to absolute time, seconds sync_abs 0 # # NEW CALIBRATION POLYNOMIAL! # Radiometry Spike Calibration (counts -> CAL) # CAL = a_i * f2^i (i=0,4), # f2 = (frame - 30000)/10000 # cal_n_coeff 5 cal_foffset 30000.0 cal_fscale 10000.0 # # these are based on the integral spikes # a0 a1 a2 a3 a4 cal_sp_Ka1 4251.5 237.08 0.01461 -11.361 -7.6097 cal_sp_Ka2 2747.5 160.67 11.178 -15.022 -3.5627 cal_sp_Q1 1173.6 66.529 -12.744 -10.809 3.2977 cal_sp_Q2 1205.1 41.128 -26.058 -7.0562 5.3677 cal_sp_Q3 31.50 0.17885 0.92088 0.28045 -0.23034 cal_sp_Q4 1067.9 54.897 -6.3817 -6.3295 -0.06337 cal_sp_D 1.0 0.0 0.0 0.0 0.0 # # Calibration of the spikes # K/CAL +/- # # these also based on integral spikes # errors include systematic error estimate in beam integral tcal_Ka1 0.360 0.048 tcal_Ka2 0.281 0.032 tcal_Q1 0.156 0.017 tcal_Q2 0.155 0.017 tcal_Q3 0.116 0.017 tcal_Q4 0.110 0.012 # # Beam Shapes # FWHM (deg) major +/- minor +/- pa +/- # # these are from the combined pair fit beam_Ka1 0.931 0.007 0.882 0.006 beam_Ka2 0.931 0.007 0.882 0.006 beam_Q1 0.694 0.008 0.658 0.008 beam_Q2 0.694 0.008 0.658 0.008 beam_Q3 0.700 0.016 0.668 0.014 beam_Q4 0.700 0.016 0.668 0.014 # # ====================================================================== # State # ----- # # The phases have now been fit robustly and should have their final # values. # # We are now using the final beam calibration, which includes an # estimate of systematic errors. # # Still to do: # ======================================================================