# 📐  L2 Spec — Low-Dose Widefield Fluorescence (photon-starved Airy deconvolution) Mismatch-Only Spec

**ID:** `L2-002-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-002`](/artifact/l1/L1-002)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.45 · **Delta tier:** 5
> **⛓ On-chain block:** 41554156

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| H | px | 128 – 4096 |
| W | px | 128 – 4096 |
| Na | — | 0.4 – 1.49 |
| Dz nm | nm | 0.0 – 1500.0 |
| Pixel nm | nm | 30 – 200 |
| Sigma bg | — | 0.0 – 0.1 |
| Peak photons | photons | 5 – 200 |

## 2. Tolerance (ε)

**Type:** `fn`

```
14.0 + 4.0 * log10(peak_photons / 5) - 5.0 * (sigma_bg / 0.10)
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.45 |
| Delta tier | 5 |

## 4. Fingerprint

`807100bb393046d04e0f5f43d6ca383545f6fdfae73cd1c6645fb70fc9743001`

## 5. On-chain Registration

- **Chain hash:** `0x379123455801a21a188277ff76ecd9fba205d19084f40650ce786fe797d4da44`
- **Chain tx hash:** `0x7abbc74cfd21d6f0a782586668029a2b59b4bd9b736f793c90a19637324917af`
- **Chain block:** `41554156`

---

## File Mapping

This bundle consists of: `L2-002-001.md`, `L2-002-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-002-001.md` | Source of truth — edit this | Human or LLM |
| `L2-002-001.json` | Structured metadata for the registry | LLM regenerates from the sections above |

**Prompt for your LLM after editing this Markdown:**

> Read the attached Markdown. Regenerate the sibling `.json` so every field matches.
> Preserve the schema documented in the rows above.
> Output each file in its own fenced code block tagged with the filename.
> Output only the JSON object.

_This Markdown was auto-synthesized from the catalog row for `L2-002-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._