cor1 status – july 2001
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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