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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

COR1 Status – July 2001

Joseph M. Davila (GSFC)

O. C. St. Cyr (CUA)


Current issues
Current Issues

  • Scattered light testing of BB2

  • Increase Exposure time

  • Reduce contamination during assembly

  • Objective lens erosion testing


Breadboard instrument
Breadboard Instrument

COR1 breadboard in HAO tunnel -- March 2001



Cor1 bb2 scattered light
COR1 BB2 Scattered Light

Bars

Bright Ring



Approaches to shorten exposure time
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


Reduce contamination of objective lens
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


Erosion test at duke facility
Erosion Test at Duke Facility

  • Samples prepared and exposed

  • Awaiting BTDF testing

  • Complete by 30 July


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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