imcrop 9 1619 734 saturn_b_20091128.fits saturn_b_20091128_crop.fits
imcrop 9 1621 736 saturn_i_20091128.fits saturn_i_20091128_crop.fits
imcrop 9 1623 745 saturn_r_20091128.fits saturn_r_20091128_crop.fits
imcrop 9 1620 725 saturn_v_20091128.fits saturn_v_20091128_crop.fits

imrot -l in -> inf
imrot -r 270 inf -> infr270