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MROIFastTipTilt.TechMeet6 History

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June 24, 2010, at 04:54 PM by jsy1001 -
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June 24, 2010, at 04:52 PM by jsy1001 -
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Zoom Transmissive
Variation from TechMeet7

Attach:TechMeet7/zoom.jpg

June 24, 2010, at 04:37 PM by jsy1001 -
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Reflective, folded
Focal length 1600mm, OAP off-axis angle 10 deg
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OAP (reflective, folded)
Focal length 1600mm, OAP off-axis angle 10 deg
June 03, 2010, at 06:38 PM by jsy1001 -
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This meeting will take place on at 14:00 on Thursday 3rd June, in Room 911.

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This meeting took place at 14:00 on Thursday 3rd June. Attendees: JSY, MF, ADR, XS, CAH, DMAW, EBS

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We have selected the following 3 conceptual layouts to present at CoDR. The drawings below are preliminary - the layouts are to be refined by Alex.

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We have selected the following 3 conceptual layouts to present at CoDR (with error budgets). The drawings below are preliminary - the layouts are to be refined by Alex.

June 03, 2010, at 06:34 PM by jsy1001 -
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Conclusions

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Selected Layouts

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Reflective, folded
Focal length 1600mm, OAP off-axis angle 10 deg
Dog-leg Transmissive
Focal length 1525mm
Direct Transmissive
Focal length 1525mm

Other Conclusions

  • Reflective layout now requires a folding mirror; in previous layouts FTT beam is probably occulted by AAS beamsplitter
  • OAP off-axis angle ~30 deg is probably ok according to ICOS
  • No significant benefits from not respecting AO or future dichroic mount envelopes
  • Addition of a negative lens will be considered as a variation on the above layouts

New Tasks

All high priority unless stated.

  • ADR: Refine selected layouts
  • JSY: Query with NMT:
    • AAS envelope
    • Space to overhang table
    • Clearance above table
    • M4 position
  • ADR: Tolerancing of direct transmissive layout under table bending
  • CAH: Request permission and funding to measure Nasmyth table deformation and temperature gradient at AMOS (during next trip to NMT)
June 03, 2010, at 06:16 PM by jsy1001 -
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June 03, 2010, at 06:10 PM by jsy1001 -
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Conclusions

We have selected the following 3 conceptual layouts to present at CoDR. The drawings below are preliminary - the layouts are to be refined by Alex. Attach:directTransmissive.png

June 02, 2010, at 01:53 PM by jsy1001 -
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Technical Meeting #6: Optical layout for CoDR

This meeting will take place on at 14:00 on Thursday 3rd June, in Room 911.

Agenda

  • Impacts of coupling component mounts together (e.g. on a common baseplate)
    • With reference to error budgets
  • Need for flat folding mirrors
    • What factors drive this?
  • Selection of layouts and error budgets to present at CoDR
    • Variations on selected layouts to present at CoDR (e.g. "telephoto" lens arrangement)
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