![](../images/photo_archives/2003/20030711/019_F5_ball_keeper_with_balls_and_magnets.jpg) |
F5 ball keeper, with balls and magnets |
![](../images/photo_archives/2003/20030711/020_F5_ball_keeper_in_camera_block.jpg) |
F5 ball keeper in F5 bore hole in camera block |
![](../images/photo_archives/2003/20030711/021_preparing_to_install_F5_lens_cells_into_camer_block.jpg) |
Preparing to install F5 lens cells into camera block |
![](../images/photo_archives/2003/20030711/022_F5_camera_installed_in_camera_block.jpg) |
Assembled F/5 camera unit in camera block |
![](../images/photo_archives/2003/20030711/023_F5_camera_entrance_lens_busted_BaF2.jpg) |
And then I busted the front lens... Yes, I used the aeroduster. Yes, it put a spot of cryojunk on the surface of the BaF2 lens. Yes, the lens spidered in a millisecond... |
![](../images/photo_archives/2003/20030711/024_F5_exit_left_PV_right.jpg) |
Back end of camera block, showing F5 at far left, TT, PV covered in protective plastic. F/17 not yet installed. |
![](../images/photo_archives/2003/20030711/025_F5_exit_lens_details.jpg) |
Details of exit end of F/5 wide-field camera unit in camera block. This exit lens has strong curvature (negative power), allowing viewing the full insides of the F/5 camera unit. |