---
name: "wcs-to-tan"
section: "1"
platform: "linux"
package: "astrometry.net"
version: "0.97+dfsg-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/wcs-to-tan"
---

# wcs-to-tan(1)

Undocumented program of astromatic.net

## NAME

wcs-to-tan - Undocumented program of astromatic.net

## SYNOPSIS

**wcs-to-tan**

## DESCRIPTION

- **-w** *file*

  WCS input file

- **-o** *file*

  WCS output file

- **-e** *extension*

  FITS HDU number to read WCS from (default 0 = primary)

- **-t**

  Just use TAN projection, even if SIP extension exists.

- **-L**

  force WCSlib

- **-x** *x-lo* **-y** *y-lo* **-W** *x-hi* **-H** *y-hi*

  - **-N** *grid-n*

  - **-v**

  Verbose

## AUTHOR

The Astrometry.net team. Principal investigators are David W. Hogg (NYU) and Dustin Lang (CMU).

## SEE ALSO

http://astrometry.net