Here is a collection of images and documentation for the
MOSFIRE repair mission
that took place from Sept 2016 to Feb 2017. Note that removal
and installation procedures were updated during this time
period. A twiki is located at
MOSFIRE repair mission twiki
Notes from mission investigation
Colimator 3 Lens
detailed photos collection of photos that are specific to Col
3.
- Collimator 2 - all flexures are still intact
- Collimator 2 looks like coating is scratched on back surface from
col 3 bumping into it.
- Collimator 3 - all bonding pads are loose from optic
- Glass chunk from collimator 3 found lodged under a flexure
- Debris from lens/coating found inside the cell
- Debris on collimator #4 - all flexures are still intact
- Debris on collimator 5 from col 3
- Collimator #5 - all flexures are still intact
- Debris inside barrel and on Collimator #6
- Collimator 6 - all flexures are still intact
- Debris also found outside on painted side of cell
- Found a piece of broken glass inside the dewar barrel between
bulkheads A and B
- Found piece of thermal strap inside Barrel
- Inspected flexures on the field lens and all flectures are intact
- Cleaned collimator optics: blew off debris using N2 and collected
as best we can with vaccum.
- With debris removed from the dewar, we did not hear or see
anything more out of the ordinary. Other sounds that are normal are
tags sliding, CCR heads shifting, and thermal straps flexing.