Class FITS_Reader

ij/src/main/java/ij/plugin/FITS_Reader.java:86–1416

Opens and displays FITS images. The FITS format is described at "http://fits.gsfc.nasa.gov/fits_standard.html". Add setOption("FlipFitsImages",false) to the Edit/Options/Startup dialog to have FITS images not flipped vertically.

 * flipped vertically.
*/
@AstroImageJ(reason = "Support for compressed FITS files via nom.tam.fits, invert flipImages to fix inverted aperture display",
		modified = true)
@Translation("Fits Reader")
public class FITS_Reader extends ImagePlus implements PlugIn {
	private static final boolean USE_NEW_READER = !"true".equalsIgnoreCase(System.getProperty("legacy.fits.reader"));
	private static boolean flipImages = true;
	// private WCS wcs;
	private ImagePlus imagePlus;
	private String directory;
	private String fileName;
	private String fileBase;
	private String fileType;
	private int wi;
	private int he;
	private int de;
	@AstroImageJ(reason = "make double for the images that need it", modified = true)
	private double bzero;
	@AstroImageJ(reason = "make double for the images that need it", modified = true)
	private double bscale;

	private Locale locale = Locale.US;
	private DecimalFormatSymbols dfs = new DecimalFormatSymbols(locale);
	private DecimalFormat fourDigits = new DecimalFormat("0000", dfs);
	private DecimalFormat fiveDigits = new DecimalFormat("00000", dfs);

	public static boolean skipTessQualCheck = Prefs.getBoolean(".aij.skipTessQualCheck", false);
	private static final LeapSeconds LEAP_SECONDS = new LeapSeconds();

	// The image data comes in different types, but in the end, we turn them all into floats.
	// So no matter what type the data is, we wrap it with a lambda that takes two indices and
	// returns a float. This uses floats as there is no DoubleProcessor from imagej
	@FunctionalInterface
	private interface TableWrapper { double valueAt(int x, int y); }

	public static HeaderCardFilter filter = null;
	private static final MPTableLoadSettings MP_TABLE_LOAD_SETTINGS = new MPTableLoadSettings();
    public static final ScopedValue<Boolean> HEADER_ONLY = ScopedValue.newInstance();
    public static final ScopedValue<ImageProcessor> REF_SLICE = ScopedValue.newInstance();

	/**
	 * Main processing method for the FITS_Reader object
	 *
	 * @param path path of FITS file
	 */
	public void run(String path) {
		// wcs = null;
		imagePlus = null;

		AIJLogger.setLogAutoCloses(Prefs.getBoolean(AIJLogger.CERTAIN_LOGS_AUTO_CLOSE, true));

		if (USE_NEW_READER) {
			try (var r = FitsReader.create(path)) {
				if (r.size() <= 0) {
					if (r.isMeasurementsTable()) {
						// Read table
						r.getHeaders();
					}