04/19/23 Robin Lafever BigBoss 1

Fiber and Ferrule

04/19/23 Robin Lafever BigBoss 2

Typical fiber and Ferrule: My current model is out of date. Jerry Edelstein has the current design.

Starting at the Focal Plane

04/19/23 Robin Lafever BigBoss 3

Fiber and Positioner on the Focal Plane

04/19/23 Robin Lafever BigBoss 4

04/19/23 Robin Lafever BigBoss 5

Model by Joe Silber and Christoph Schenk

Fiber and Positioner

The fiber jacket diameter has been greatly exaggerated to be able to see the fiber path

Ferrule / Positioner

04/19/23 Robin Lafever BigBoss 6

The fiber jacket diameter has been greatly exaggerated to be able to see the fiber path

Fiber and Positioner

04/19/23 Robin Lafever BigBoss 7

The fiber jacket diameter has been greatly exaggerated to be able to see the fiber path

04/19/23 Robin Lafever BigBoss 8

04/19/23 Robin Lafever BigBoss 9

Cluster of 32 Positioners fed by a connector, 1 cluster Assembly

04/19/23 Robin Lafever BigBoss 10

Adapters

04/19/23 Robin Lafever BigBoss 11

Connectors

04/19/23 Robin Lafever BigBoss 12

The connector shown above is quite different from the ones currently in the concept model.Jerry Edelstein has ordered prototypes. The model will be updated when drawings become available.

Typical Cable

04/19/23 Robin Lafever BigBoss 13

Loose-packed fiber sub-bundle32 fibers plus a few load fibersPer bundle

Polymer Core 12.3 mm dia.

16 x 3 mm Furcation tubes

‘gel tape’ winding

PVC waterproof coating, ~30 mm dia.

Aramid fiber tensile element

Steel spiral-wrapped conduit

04/19/23 Robin Lafever BigBoss 14

Slit plate assembly with strain relief cable connection

Through Spectrograph Room

Through Telescope

Across 25 mm Vane

Into Focal Plane housing

Typical Cable Assembly End-to-end

04/19/23 Robin Lafever BigBoss 15

Through Spectrograph Room

16 furcation tubes1 x 16 cross section

Through Telescope

16 furcation tubesRadial cross section

Across 12.5 mm Vane

16 furcation tubes2 x 8 cross section

Into Focal Plane housing

512 fibers32 fibers/furcation tube16 furcation tubes

04/19/23 Robin Lafever BigBoss 16

04/19/23 Robin Lafever BigBoss 17

04/19/23 Robin Lafever BigBoss 18

04/19/23 Robin Lafever BigBoss 19

04/19/23 Robin Lafever BigBoss 20

Robin Lafever 21

04/19/23 Robin Lafever BigBoss 22

04/19/23 Robin Lafever BigBoss 23