# 📐  L2 Spec — Lucky Imaging Atmospheric Turbulence Recovery — Nominal + Mismatch Specs

**ID:** `L2-167-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-167`](/artifact/l1/L1-167)

> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.3 · **Delta tier:** 5
> **⛓ On-chain block:** 41554247

---

## 1. Domain Ω

**Type:** `range`

| Parameter | Unit | Range |
|---|---|---|
| H | px | 64 – 1024 |
| W | px | 64 – 1024 |
| N frames | — | 100 – 5000 |
| Seeing r0 cm | — | 5.0 – 30.0 |
| Selection fraction | — | 0.001 – 0.2 |

## 2. Tolerance (ε)

**Type:** `fn`

```
0.25 + 0.05 * (seeing_r0_cm / 15.0) ** 0.5
```

## 3. Difficulty

| Property | Value |
|---|---|
| Difficulty score | 0.3 |
| Delta tier | 5 |

## 4. Fingerprint

`5971b47c86008d17f84c7fed33db9dd52c5c6213f1691565a0e6e493e4e67dc9`

## 5. On-chain Registration

- **Chain hash:** `0xedcb2ca684dc101796d0745168639e26492231b6a9c685404ec70746eeade946`
- **Chain tx hash:** `0xabd9bce4ee42b7eff47c2f35a17c570da3b78670cb60583b9ca17153180ded5d`
- **Chain block:** `41554247`

---

## File Mapping

This bundle consists of: `L2-167-001.md`, `L2-167-001.json`.

| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-167-001.md` | Source of truth — edit this | Human or LLM |
| `L2-167-001.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 `L2-167-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._