---
type: lookup
id: fits-53-49-4d-50-4c-45-20-20-3d-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20
asset: file-format-signatures
title: "53 49 4D 50 4C 45 20 20 3D 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 54 — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "fits | Flexible Image Transport System ( <https://en.wikipedia.org/wiki/FITS> FITS ) [ 41 ]"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "53 49 4D 50 4C 45 20 20 3D 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 54"
offset: "0"
extension: "fits"
format: "Flexible Image Transport System ( <https://en.wikipedia.org/wiki/FITS> FITS ) [ 41 ]"
unverified_fields: hex_signature, offset
---
**Hex signature:** 53 49 4D 50 4C 45 20 20 3D 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 54

**Offset:** 0

**Extension:** fits

**Format:** Flexible Image Transport System ( <https://en.wikipedia.org/wiki/FITS> FITS ) [ 41 ]

> fits | Flexible Image Transport System ( <https://en.wikipedia.org/wiki/FITS> FITS ) [ 41 ]

Source: <https://en.wikipedia.org/wiki/List_of_file_signatures>