Chandra Aspect Operations

Revised star and fid plate scale coefficients 2020


The star and fid light aca plate scale coefficients describe polynomials which convert from CCD (row, col, ACA housing temperature) to (Y_angle, Z_angle). In 2020, a recalibration was performed to reduce increasing error due to increasing ACA housing temperature.

Notebooks with calibration processes, products, and evaluation

Star Plate Scale Calibration: Fid Plate Scale Calibration: End-to-End test with X-ray data: Appendix:

Analysis data

The notebooks and data used in this analysis are in /proj/sot/ska/www/ASPECT/aca_plate_scale/calib_2020

Last modified:03/17/20

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