float[] qx = (float[]) row[1];
assertEquals(strings[i], (String) row[2]);
// change string to new string
row[2] = "new string:" + i;
btab.addRow(row);
}
f = new Fits();
f.addHDU(Fits.makeHDU(btab));
BufferedFile bf = new BufferedFile("bt4.fits", "rw");