Benchmarking: Yippy vs AYO

This page summarizes validation of yippy’s coronagraph performance metrics against AYO’s IDL implementation, tested on two coronagraphs (AAVC and OVC) with PSF truncation ratio 0.3.

Key Results

Metric	AAVC mean (max err)	OVC mean (max err)
Core throughput	0.9948 (1.4%)	0.9907 (8.6%)
Sky transmission	0.9994 (0.9%)	0.9995 (1.0%)
Raw contrast	1.0000 (< 0.1%)	1.0000 (< 0.1%)
Noise floor	1.0000 (< 0.1%)	1.0000 (< 0.1%)

Raw contrast and noise floor match exactly because both AYO and yippy clamp values at the contrast floor (\(10^{-10}\)), which dominates across most of the science region. The figure below focuses on throughput and sky transmission, the two metrics with meaningful variation.