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Table 2
User-defined parameters set as defaults in the ANDROMEDA pipeline and their respective significance.
| Parameter | Definition | Units | Default value | Impact |
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| F | Filtering fraction (Sect. 2.1) | – | 1/4 | low |
| δ min | Minimum separation to build the differential images (Sect. 2.2.1) | λ/D | 1.0 | high |
| dr | Width of annuli on which ADI is performed (Sect. 2.2.1) | λ/D | 1 | low |
| R A | Ratio optimization to subtraction areas (Sect. 2.2.1) | – | 2 | low |
| N psf | Size of the square PSF image (H-band filter of NaCo) | pixels | 32 | see text |
| N smooth | Smoothing of the S/N robust standard deviation profile (Sect. 2.5) | pixels | 18 | high |
Notes. The right column shows the impact of the user-defined parameters over the whole process: if low, the value can remain fixed and if high, it should be tuned according to the data set.
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