Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1742....6e&link_type=abstract
In: Multilayer and grazing incidence X-ray/EUV optics for astronomy and projection lithography; Proceedings of the Meeting, San
Astronomy and Astrophysics
Astrophysics
Image Resolution, Imaging Spectrometers, Instrument Compensation, Monomolecular Films, Spacecraft Contamination, X Ray Astrophysics Facility, Angular Resolution, Charge Coupled Devices, High Resolution, Nasa Space Programs
Scientific paper
By the end of this decade, the two missions comprising the Advanced X-ray Astrophysics Facility (AXAF) will become the X-ray component of NASA's Great Observatories. In order to meet some of the ambitious scientific objectives, the AXAF team plans to calibrate the telescopes and instruments to an accuracy of a few percent. Particulate and molecular contamination potentially limit this precision, because they would likely change between ground calibration and orbital operation. To avoid this requires careful control over procedures affecting the coated optical surfaces, to ensure that neither particulate nor molecular contamination compromise the calibration. In particular, the fractional areal coverage by particulates or condensed droplets must be less than 0.005 projected onto the aperture plane; the thickness of any molecular film must be less than a few tens of angstrom.
Elsner Ronald F.
O'Dell Stephen L.
Weisskopf Martin C.
No associations
LandOfFree
Molecular contamination and the calibration of AXAF does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Molecular contamination and the calibration of AXAF, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular contamination and the calibration of AXAF will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1265253