FITS square pixel grid (15x15), in blue

Prev
1
2
3
4
5
6
7
8
9
10
11
Next

FITS (Flexible Image
Transport System) is the IAU standard for data interchange in
astronomy.

Data values in a FITS image array occupy a regular Ndimensional
lattice structure.

Ordered so that the first axis varies fastest (FORTRAN order).

Best thought of as an array of delta sampling functions on a square
grid.

For display purposes

Delta functions are represented as finitesized, square
pixels (not rectangular or hexagonal).

By convention, the first pixel is at lowerleft, increasing to the
right, then upwards.

FITS keywords:
NAXIS, NAXISj.
