Pictures and GAM-lite Testing

Date/Time

20230114-T14:30 - 20230114-T1900

People

Roy, Gabriel

Spaces Occupied

401, 433C, Dome

Goals

1. Document GAM on wiki

2. Investigate and repair GAM as possible

3. Clean-off mirror doors

4. Develop Software Webpage

5. Develop Motors Webpage

6. Test GAM-lite Focus/Design

7. Determine the name of the box the GAM is controlled/powered by(?)

Log

1. Take images of GAM internals and write-up GAM

     EXPLORE GAM

1. Pulled off east port plate on GAM

2. Investigated translating stage drive & motor

   1. Seems like hand crank (Item 113 in ENGR Drawings GAM; GAM 011) is meeting friction and is very noisy

3. Investigated On-Axis Filter Wheel drive & motor

   1. Belt (BERG 31BFG), is missing some teeth, but seems OK. Might be good idea to get a new one.

   2. For new BERG 31BFG, it looks like you buy a long length of it and cut it/fasten it to the size you need

4. Since it's clear that the translating stage motor isn't working as expected (GAM tests), we removed the entire east-plate for further inspection

   1. The BERG belt connecting the potentiometer that acts as the encoder for the translating stage position is actively breaking. We think due to age, but it could also be due to some misalignment we aren't aware of

      1. There are other BERG belts that may be in a similar state, namely for the On-Axis Filter wheel

   2. We inspected the pin-outs between this motor (translating stage), and confirmed they agree with ENGR Pkg GAM 349-209.

5. Further, we removed the AMP 37-pin terminal port from the south plate in an attempt to better inspect the wiring.

   1. This is difficult since there isn't a lot of slack in the wires and we are unwilling to disassemble the GAM further.

6. Possible appropriate next steps are to get the extender cables and completely disassemble the GAM while testing each component

Open

Open

ToDo

• Get coat rack/place for things off the ground

• Remove Sky & Telescope annals

• Ask Belay about Cloud Monitor

• Find FLIR Camera

  • Roy sent Dominik an email

  • Dominik write back, he took it. We will include in inventory and have a better way to sign things out.

• Hand Crank for Translating Stage is noisy and meets friction, lubricate/repair with Erik's help

• Invest in extension cables and disassemble the GAM while inspecting each part ... This is gunna take a while

• Figure out why GAM switch needs to be flipped

• Clean Mirror Doors

• Wipe down telescope, in general

• Test new finderscope mount

• Calibrate finderscope to be better aligned with DFM Scope

Notes