this example shows how to do an image quantity 10 11 12 1 2 3 Some instr. time frame sec 10.1 20.1 POS.EQ J2000/ICRS pos.eq.ra deg pos.eq.ra deg 131.2181 -31.1284 512.1 512.1 -0.0016 0.0016 48.3121 erg cm^-2 sec^-1 10.12 12.34 20.34 13.87 24.76 5.67 6.80 .7 12.8 0.12 12.34 20.34 13.87 24.76 5.67 6.80 .7 12.8