Mathematics – Logic
Scientific paper
Jun 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2199..977g&link_type=abstract
Proc. SPIE Vol. 2199, p. 977-985, Advanced Technology Optical Telescopes V, Larry M. Stepp; Ed.
Mathematics
Logic
1
Scientific paper
A long term survey of airborne particles was initiated in 1992 at the VLT Observatory of Cerro Paranal to establish the cleanliness of the telescope area before the start of construction work. The results presented in this paper shows large variations with time of the density of inhalable particles (< 10 micrometers ), and a very low density of the larger aerosols when compared to clean room industrial standards. In parallel with the aerosol survey, an analysis of the damage caused to mirror coatings was conducted by periodically exposing sets of mirrors outdoors at 10 m above ground level for periods of two weeks. A follow-up of the evolution: with time and meteorological conditions of the reflectivity, diffusion and scattering coefficients gives insights on mirror maintenance requirements in modern telescopes using natural air flushing to right local seeing. From the study of damages caused during wind storms, some new constraints on operational limits are discussed, in particular with regards to the protection of an unbaffled secondary mirror.
Giordano Paolo
Sarazin Marc S.
No associations
LandOfFree
Survey of airborne particle density and the aging of mirror coatings in the open air at the VLT Observatory 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 Survey of airborne particle density and the aging of mirror coatings in the open air at the VLT Observatory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Survey of airborne particle density and the aging of mirror coatings in the open air at the VLT Observatory will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1509423