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Astronomy files

FITS keyword card formatter

Format a standard FITS keyword/value/comment into exactly 80 ASCII characters.

Your inputs

Start with an example

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Your result

Example result

How it works

Put = and a space in columns 9–10. Quote and escape strings; align numeric or logical values in the 20-column value field. Pad the card with spaces.

OBJECT with value M31 begins OBJECT = 'M31' and ends with enough spaces to reach 80 characters.

Limits

One ordinary value card only. No END/commentary cards, HIERARCH, CONTINUE or full 2880-byte header blocks. Strings and comments must be printable ASCII.