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COR1 Status – July 2001

COR1 Status – July 2001. Joseph M. Davila (GSFC) O. C. St. Cyr (CUA). Current Issues. Scattered light testing of BB2 Increase Exposure time Reduce contamination during assembly Objective lens erosion testing. Breadboard Instrument. COR1 breadboard in HAO tunnel -- March 2001.

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COR1 Status – July 2001

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  1. COR1 Status – July 2001 Joseph M. Davila (GSFC) O. C. St. Cyr (CUA)

  2. Current Issues • Scattered light testing of BB2 • Increase Exposure time • Reduce contamination during assembly • Objective lens erosion testing

  3. Breadboard Instrument COR1 breadboard in HAO tunnel -- March 2001

  4. COR1 Occulter

  5. COR1 BB2 Scattered Light Bars Bright Ring

  6. Scattered Light Measurements from BB2

  7. Approaches to shorten exposure time • Understand and remove bright ring • Decrease bandpass from 1000 A to approximately 100 A • Use a neutral density filter • Focal plane occulter • Add images on board

  8. Reduce Contamination of Objective Lens • Pre-align mechanical parts to minimize objective exposure • Dust cover for objective during assembly • Assembly moved to cleaner, dedicated clean room

  9. Erosion Test at Duke Facility • Samples prepared and exposed • Awaiting BTDF testing • Complete by 30 July

  10. View from Front Interface: Door to COR-1 View from Rear Door Interface Structure Tube 1 Objective Lens + Mount Door Hinge & Mount Aperture Selector Blade Aperture Selector Motor Inside INTERFERENCE Door M. Hersh 061901

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