Cor1 status july 2001
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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

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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 occulter

COR1 Occulter


Cor1 bb2 scattered light

COR1 BB2 Scattered Light

Bars

Bright Ring


Scattered light measurements from bb2

Scattered Light Measurements from BB2


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


Cor1 status july 2001

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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