![](../images/photo_archives/2002/20021210/5x1_LED_illuminator_for_tollestrup_telescope.jpg) |
5x1 LED illuminator for the "Tollestrup Telescope". This unit was to have put a column of 5 LED spots on the detector for a particular camera positioning. It didn't actually work that way in practice. |
![](../images/photo_archives/2002/20021210/baffles_for_camera_block.jpg) |
Baffles and anti-reflection rifle tubes for F/17 camera and other units. |
![](../images/photo_archives/2002/20021210/camera_block.jpg) |
Camera Block |
![](../images/photo_archives/2002/20021210/collimator_stack_anodized.jpg) |
Collimator stack, after anodizing |
![](../images/photo_archives/2002/20021210/filter_wheel_encoder_magnet.jpg) |
filter wheel position encoder magnet stack |
![](../images/photo_archives/2002/20021210/LiF_test_lens_showing_scratch_ring.jpg) |
LiF crystal test piece after cold testing. Note scratch ring on underside from G10 support system. |
![](../images/photo_archives/2002/20021210/slit_belt_cog_wheel.jpg) |
Slit belt cog wheel |
![](../images/photo_archives/2002/20021210/slit_belt_unit.jpg) |
Slit belt unit, partially assembled |
![](../images/photo_archives/2002/20021210/test_lens_after_testing_note_scratch_ring.jpg) |
Test crystal after cold testing, Note scratch mark all around back face. We believe the compressor's vibrations must have stimulated the crystal to precess and so become scratched. |
![](../images/photo_archives/2002/20021210/test_lenses_2.jpg) |
Test crystal pieces after cold tests. |
![](../images/photo_archives/2002/20021210/test_lenses_on_stands.jpg) |
Another view |
![](../images/photo_archives/2002/20021210/ZnSe_test_lens_with_temp_diode.jpg) |
Zoom of ZnSe test piece with Silicon diode thermal sensor |