REMOVE OUTER SHELL OF BOTTOM
PART OF THE DEWAR
This is easy, simply remove the 8 screws at the bottom of the support plate.
Those screws keep together 3 pieces: the support plate, the bottom
plate of the dewar and the shell; so you just need to be careful that things
don't totally fall apart and out of your hands as you remove the final
Make sure that the filter wheel shaft is retracted, you may need to loosen
the outside screw a little. Lift off the shell, and set it aside.
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