# wcs_and_other_modules

> The WCS module manages transformations between pixel coordinates in images and world coordinates (e.g., celestial coordinates).

- Source: https://doutorai.pt/en/components/skills__wcs-and-other-modules
- Type: Skills
- Category: Scientific
- Downloads: 0
- Site: Doutor AI (https://doutorai.pt/en) - AI tools for small businesses

An open-source community component, curated and adapted by Doutor AI.

## What it does and how to use it

A **skill** that teaches Claude Code to do scientific tasks well. It is packaged knowledge the model uses whenever it is relevant.

1. Install the skill (command above).
2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
3. No commands to memorize: you talk in plain language and the skill does the rest.

## Install (Claude Code)

```bash
mkdir -p .claude/skills/wcs-and-other-modules && curl -fsSL https://doutorai.pt/data/lib/skills__wcs-and-other-modules.md -o .claude/skills/wcs-and-other-modules/SKILL.md
```

Paste this command into the terminal, in your project folder, and the component installs automatically.

## Content

````
# WCS and Other Astropy Modules

## World Coordinate System (astropy.wcs)

The WCS module manages transformations between pixel coordinates in images and world coordinates (e.g., celestial coordinates).

### Reading WCS from FITS

```python
from astropy.wcs import WCS
from astropy.io import fits

# Read WCS from FITS header
with fits.open('image.fits') as hdul:
    wcs = WCS(hdul[0].header)
```

### Pixel to World Transformations

```python
# Single pixel to world coordinates
world = wcs.pixel_to_world(100, 200)  # Returns SkyCoord
print(f"RA: {world.ra}, Dec: {world.dec}")

# Arrays of pixels

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````

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Content by Doutor AI (https://doutorai.pt/en). When quoting, please cite the source: https://doutorai.pt/en/components/skills__wcs-and-other-modules