Definition of White Light images

From the TRACE wavelength definition page, we note that the White Light images are taken in the UV channel through the Mag Flouride entrance filter and the Fused Silica filter.

Some graphs:

The Suprasil fused silica filter transmission is shown below. (Click on the plots for zoomed-in versions.)
Fused Silica Graph

The response of the entrance filter, fused silica, mirror reflectivities and CCD quantum efficiency looks like this. (NOTE: the y-axis is now going to be some sort of quantum efficiency, not transmission. But the relative numbers are right. Everything does in fact die below 1600, and the rolloff at 1um is real -- that's where the CCD finally dies. I didn't see this until later and I've got too many other things to do right now to fix this.)

White Light Thruput

Now, fold that against some random solar spectrum to get this:

White Light Spectrum

handy@physics.montana.edu
Last modified: Sun May 24 16:35:19 PDT 1998