{"artifact_id":"L1-166","layer":"L1","title":"Stellar Coronagraphy PSF Subtraction","domain":"Astronomy","sub_domain":"High-contrast imaging","physics_fingerprint":{"L_DAG":3.2,"title":"Stellar Coronagraphy PSF Subtraction","domain":"Astronomy","carrier":"photon","primitives":["K.psf.coronagraph","S.speckle.reference","int.temporal"],"sub_domain":"High-contrast imaging","noise_model":"shot_poisson","problem_class":"linear_inverse","solution_space":"2D_companion_flux","difficulty_delta":3,"integration_axis":"focal_plane","sensing_mechanism":"coronagraphic_psf_subtraction"},"observable_profile":{"metric":"contrast_5sigma_dB","regime":"Existence of the recovered 2D_companion_flux is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 100); speckle_evolution_rate dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Shot poisson sets the irreducible data-fidelity floor.","secondary":"companion_SNR"},"size_tiers":{"center_spec":{"omega":{"H":512,"W":512,"N_frames":30,"contrast_ratio":1e-05,"speckle_lifetime_s":60.0},"input_format":"measurement_only","problem_class":"linear_inverse","forward_operator":"coronagraphic_psf_subtraction","epsilon_fn_center":"-5.0 contrast_5sigma_dB"},"omega_bounds":{"H":[128,2048],"W":[128,2048],"N_frames":[10,200],"contrast_ratio":[1e-08,0.0001],"speckle_lifetime_s":[10,300]},"epsilon_bounds":{"contrast_5sigma_dB":[-8.0,-3.0]},"allowed_problem_classes":["linear_inverse"],"allowed_omega_dimensions":["H","W","N_frames","contrast_ratio","speckle_lifetime_s"],"allowed_forward_operators":["coronagraphic_psf_subtraction"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":10000.0,"metric":"contrast_5sigma_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x5fd0101d95ec991dcf6184dfbb55d3640b660b9f543f09c2cdd9406356cd15c7","chain_tx_hash":"0xdb0dbfadf6eb29970fd5919cfb79a48e07c70435ce44d46c8fa20f9832482d0f","chain_block":41554243}