SURFLIB_CALC_POLPACK_ANGROT - Average rotations angles over integration

Description:

This routine calculates the mean rotation angle for each integration. The input data contains one angle per sample and this is averaged to calculate the rotation angle per integration. The input angle is the rotation angle (anti-clockwise) between the RA frame and the nasmyth (waveplate) frame. The output angle is the angle between the waveplate 0 and the X PIXEL axis (not the RA axis) Since the supplied angle is the angle from the Y-axis (ie all angles are from Nasmyth Y axis) we need to add 90 degrees

Invocation:

CALL SURFLIB_CALC_POLPACK_ANGROT(N_POS, N_EXPOSURES, N_INTEGRATIONS, N_MEASUREMENTS, DEM_PNTR, ANGROT_IN, ANGROT_OUT, STATUS)

Arguments:

N_POS = INTEGER (Given)

Size of ANGROT_IN array

N_EXPOSURES = INTEGER (Given)

Number of exposures in DEM_PNTR

N_INTEGRATIONS = INTEGER (Given)

Number of integrations in DEM_PNTR

N_MEASUREMENTS = INTEGER (Given)

Number of measurements in DEM_PNTR

DEM_PNTR(1,N_EXPOSURES,N_INTEGRATIONS,N_MEASUREMENTS) = INTEGER (Given)

Start position for each EXP, INT, MEAS

ANGROT_IN (N_POS) = REAL (Given)

Rotation for each sample (N_POS)

ANGROT_OUT (N_INTEGRATIONS, N_MEASUREMENTS) = REAL (Returned)

Rotation angle averaged over each integration

ANGROT_VAR (N_INTEGRATIONS, N_MEASUREMENTS) = REAL (Returned)

Variance on averaged angle

STATUS = INTEGER (Given & Returned)

Global status

Copyright

Copyright ©1995,1996,1997,1998,1999 Particle Physics and Astronomy Research Council. All Rights Reserved.