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For Peak Up Imaging observations, SSC provides photometrically calibrated
data, assuming the source spectrum has the spectral shape  F
=  F = constant. The calculations take into account the
full spectral response of the instrument (see plot below). Due to the
so-called "Red Leak" (a small increase in response at about 28 microns)
some emission will be detected in the Blue Peak -Up camera for very cold
sources that would not have been detected in a system without the red
leak. This translates into large correction factors for very cold sources
(T < 50 K) observed with the Blue Peak-Up camera. While these numbers
are formally correct, the observers should be very wary of blindly
applying them to the data. Longer wavelength observations are advised in
this case.
To get the peak-up flux for a non F =
constant shape, divide the flux by the appropiate color correction
factor, as given by the tables below.
Table 1: Peak-up Color
Corrections for F 
B (T)
T
| Blue | Red |
50
| 6.845
| 1.558
|
60
| 2.800
| 1.284
|
70
| 1.796
| 1.150
|
80
| 1.421
| 1.078
|
100
| 1.145
| 1.011
|
120
| 1.049
| 0.987
|
160
| 0.988
| 0.976
|
200
| 0.976
| 0.980
|
240
| 0.976
| 0.986
|
320
| 0.984
| 0.997
|
640
| 1.010
| 1.018
|
1280
| 1.025
| 1.029
|
2560
| 1.032
| 1.034
|
5120
| 1.036
| 1.037
|
10240
| 1.038
| 1.038
|
|
Blue | Red | 
|
-3.0
| 1.051
| 1.041
|
1.0
|
-2.5
| 1.031
| 1.026
|
0.5
|
-2.0
| 1.016
| 1.013
|
0.0
|
-1.5
| 1.006
| 1.005
|
-0.5
|
-1.0
| 1.000
| 1.000
|
-1.0
|
-0.5
| 0.998
| 0.998
|
-1.5
|
0.0
| 1.000
| 1.000
|
-2.0
|
0.5
| 1.005
| 1.005
|
-2.5
|
1.0
| 1.013
| 1.013
|
-3.0
|
1.5
| 1.025
| 1.024
|
-3.5
|
2.0
| 1.039
| 1.039
|
-4.0
|
2.5
| 1.057
| 1.057
|
-4.5
|
3.0
| 1.078
| 1.078
|
-5.0
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