fitscopy

Documentation

Overview

fitscopy reads an input FITS file through the fits library, walks every HDU, and writes them byte-for-byte to an output file via the library's public CopyTo API. When the library is working correctly and the input is well-formed, the output is byte-for-byte identical to the input.

This is the primary regression tool for the byte-exact round-trip requirement in plan §"Done criteria for v1".

Usage:

fitscopy input.fits output.fits