24um
12.5% falls on central pixel, 6.4 Jy=saturation 
1.48x10^6 p/sec/pix is the saturation flux arriving at the telescope
Telescope  		photons/	Watts/	  	photons/	Pt. Source=			 	
T	      		cm^2*sec*sr 	cm^2*sr	   	sec/pixel	Bkgnd (Jy)	 	 			
100			1.09E+15	8.91E-06	7.50E+08	3.25E+03	 			
75			1.52E+14	1.23E-06	1.04E+08	4.52E+02				
50			3.16E+12	2.50E-08	2.18E+06	9.43E+00				
45			8.86E+11	6.96E-09	6.11E+05	2.64E+00				
40			1.83E+11	1.42E-09	1.26E+05	5.45E-01				
35			2.44E+10	1.89E-10	1.68E+04	7.28E-02				
30			1.70E+09	1.30E-11	1.17E+03	5.08E-03				
29			8.98E+08	6.87E-12	6.19E+02	2.68E-03				
28			4.54E+08	3.46E-12	3.13E+02	1.35E-03				
27			2.18E+08	1.66E-12	1.50E+02	6.50E-04				
26			9.91E+07	7.54E-13	6.83E+01	2.96E-04				
25			4.24E+07	3.22E-13	2.92E+01	1.27E-04				
24			1.69E+07	1.28E-13	1.17E+01	5.05E-05				
23			6.26E+06	4.73E-14	4.31E+00	1.87E-05				
22			2.12E+06	1.60E-14	1.46E+00	6.31E-06				
21			6.47E+05	4.87E-15	4.46E-01	1.93E-06				
20			1.76E+05	1.32E-15	1.21E-01	5.25E-07				
19			4.19E+04	3.14E-16	2.89E-02	1.25E-07				
18			8.52E+03	6.38E-17	5.88E-03	2.54E-08				
17			1.44E+03	1.08E-17	9.95E-04	4.31E-09				
16			1.97E+02	1.47E-18	1.35E-04	5.86E-10				
15			2.06E+01	1.53E-19	1.42E-05	6.14E-11				
14			1.57E+00	1.17E-20	1.08E-06	4.69E-12				
13			8.11E-02	6.02E-22	5.59E-08	2.42E-13				
12			2.57E-03	1.90E-23	1.77E-09	7.67E-15				
11			4.38E-05	3.24E-25	3.02E-11	1.31E-16				
10			3.33E-07	2.46E-27	2.29E-13	9.93E-19				
9			8.63E-10	6.36E-30	5.95E-16	2.57E-21				
8			5.10E-13	3.76E-33	3.52E-19	1.52E-24				
7			3.65E-17	2.69E-37	2.52E-23	1.09E-28				
6.5			1.03E-19	7.59E-40	7.12E-26	3.08E-31				
6			1.10E-22	8.08E-43	7.59E-29	3.28E-34				
5.5			3.39E-26	2.49E-46	2.34E-32	1.01E-37