---
name: "pgmtost4"
section: "1"
platform: "linux"
package: "netpbm"
version: "10.86.51-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/pgmtost4"
---

# pgmtost4(1)

convert PGM image to SBIG ST-4 format

## NAME

pgmtost4 - convert PGM image to SBIG ST-4 format

## SYNOPSIS

**pgmtost4**

\[*pgmfile*\]

## DESCRIPTION

This program is part of **Netpbm**(1) .

**pgmtost4** reads a PGM image as input and produces a Santa Barbara Instrument Group SBIG ST-4 camera CCD image as output.

Note that this format is distinct from the SBIG format used with mos SBIG cameras.  For that, see **pgmtosbig**

- •

  The image is uncompressed

- •

  The image says it is from a "ST-6" camera

- •

  The image header has these lines:

- •

  camera type

- •

  height

- •

  width

- •

  saturation level

## OPTIONS

There are no command line options defined specifically for **pgmtost4**, but it recognizes the options common to all programs based on libnetpbm (See \
  Common Options ⟨index.html#commonoptions⟩ .)

## SEE ALSO

[**st4topgm**(1)](/st4topgm/1.md) , **pgm**(1)

## HISTORY

**pgmtosbig** was new in Netpbm 10.70, and was intended primarily as a test tool for **sbigtopgm**.

## DOCUMENT SOURCE

This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation is at

-

  **http://netpbm.sourceforge.net/doc/pgmtost4.html**