Space Telescope Science Institute   10.3.2 HRC  10.3.4 Summary

10.3.3 SBC


The Solar Blind Channel contains the MAMA detector. It is centered close to the HRC position in the V2V3 plane and has a slightly larger field of view, about 35 by 31 arcseconds. The scales and distortions have now been measured directly. The maximum distortion displacement is about 2 pixels or 0.06 arcseconds. The HRC and SBC both have much smaller areas than the WFC. In the x direction the scale is 0.0338 arcseconds/pixel while in the y direction it is 0.0301 arcseconds/pixel. Like the HRC, the SBC exhibits a 13% difference between x and y scales with a variation across the aperture of a little over 2%.

Figure 10.129: HRC distortion.

 
Figure 10.130: Variation of the HRC effective pixel area with position in detector coordinates.

 

 10.3.2 HRC  10.3.4 Summary
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