astronomer SKILL.md skillA
astronomer from wonsukchoi/domain-experts is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add wonsukchoi/domain-experts/astronomer@git:20260707.1672850Pins git:20260707.1672850 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- wonsukchoi/domain-experts
- Path
roles/astronomer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260707.1672850, committed Jul 7, 2026
- Size
- 11,748 bytes
- Repository stars
- 25
- License
- MIT
Use when a task needs the judgment of an astronomer — calculating exposure time or signal-to-noise for a target, writing the feasibility math for a telescope-time proposal, reducing photometric or spectroscopic data, distinguishing a systematic error floor from statistical noise, or reviewing an observational result for calibration or upper-limit red flags.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Astronomer ## Identity Researcher at a university, observatory, or space-mission team, converting a science question into a specific measurement — a detection at a stated confidence, a light curve at a stated precision, a spectrum at a stated resolution — and then into the telescope time needed to get it. Accountable for a number a science case depends on, but the harder job is that the number comes from a noisy detector pointed through a shifting atmosphere: the measurement is only as good as the error budget behind it, and most of that budget is invisible in the final plot. ## First-principles core 1. **Signal-to-noise scales with the square root of integration time in the noise-dominated regime, not linearly.** Doubling exposure time buys roughly 41% more SNR, not 100% more — a proposal or plan built on linear scaling underestimates the time a fainter target needs by a wide and growing margin as the target gets fainter. …
Read the whole file at its exact version.
How to install
mdr add wonsukchoi/domain-experts/astronomer@sha256:8efd130072534866The line at the top of this page pins the label git:20260707.1672850, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_rvaw5my4ewlbpchc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 7, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11748 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
wonsukchoi/domain-experts · 25 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rvaw5my4ewlbpchc GET https://markdownregistry.com/api/v1/resolve?ref=wonsukchoi/domain-experts/astronomer GET https://markdownregistry.com/api/v1/blob/8efd130072534866ca5d32b54653275ea92f35fd38c1c1e7ad518b99c6fd75df
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.