set output 'bb_log_a.ps' 
set term postscript color enhanced 'Helvetica,18'  
set grid 
set key top right 
set logscale x 
set logscale y 
set ylabel 'Flux per unit wavelength interval (arb scale)' 
set xlabel 'Wavelength (nm)' 
set title 'Spectra of blackbodies '
plot [0.1:1e6][10:1e45] './bb_lam_100.dat' using ($2*1e9):($3)        with points ps 0.8 pt 3 lc 1 lw 2 t 'T = 100 K'  ,               './bb_lam_1000.dat' using ($2*1e9):($3)        with lines lt 1 lw 5 lc 2 t 'T = 1,000 K'  ,               './bb_lam_10000.dat' using ($2*1e9):($3)        with points ps 0.8 pt 4 lc 3 lw 2 t 'T = 10,000 K'  ,               './bb_lam_100000.dat' using ($2*1e9):($3)        with lines lt 1 lw 4 lc 4 t 'T = 100,000 K'  ,               './bb_lam_1000000.dat' using ($2*1e9):($3)        with points ps 0.8 pt 6 lw 2 lc -1 t 'T = 1,000,000 K'  
set output 
quit 
