COR1 Status – July 2001
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Transcript of 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
COR1 breadboard in HAO tunnel -- March 2001
Breadboard Instrument
COR1 Occulter
COR1 BB2 Scattered Light
Bright Ring
Bars
Scattered Light Measurements from BB2
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
• 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
•Samples prepared and exposed
•Awaiting BTDF testing
•Complete by 30 July
Interface: Door to COR-1View from Front
View from Rear
Door Hinge & Mount
Tube 1Door Interface Structure
Objective Lens + Mount
Aperture Selector Blade
Door
INTERFERENCE
Aperture Selector Motor Inside
M. Hersh 061901