Document Detail


Optical phased array configuration for an extremely large telescope.
MedLine Citation:
PMID:  14765919     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Extremely large telescopes are currently under consideration by several groups in several countries. Extrapolation of current technology up to 30 m indicates a cost of over dollars 1 billion. Innovative concepts are being explored to find significant cost reductions. We explore the concept of an Optical Phased Array (OPA) telescope. Each element of the OPA is a separate Cassegrain telescope. Collimated beams from the array are sent via an associated set of delay lines to a central beam combiner. This array of small telescope elements offers the possibility of starting with a low-cost array of a few rings of elements, adding structure and additional Cass elements until the desired diameter telescope is attained. We address the salient features of such an extremely large telescope and cost elements relative to more conventional options.
Authors:
Aden Baker Meinel; Marjorie Pettit Meinel
Related Documents :
16580839 - Analysis of cadmium in food by multiple prompt gamma-ray spectroscopy.
12573829 - On-site treatment and landfilling of mswi air pollution control residues.
16844189 - Accumulation of copper in brown rice and effect of copper on rice growth and grain yiel...
8885429 - Lead content of rice collected from various areas in the world.
14515409 - Cadmium measurements in blood and hair of occupationally non-exposed military recruits ...
16337849 - Cadmium dietary intake in the canary islands, spain.
19201429 - Difference of mercury bioaccumulation in red mullets from the north-western mediterrane...
22040399 - Environmental influences on children's physical activity and eating habits in a rural o...
24606959 - Use of mobile device applications in canadian dietetic practice.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  43     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2004 Jan 
Date Detail:
Created Date:  2004-02-09     Completed Date:  2004-03-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  601-7     Citation Subset:  -    
Affiliation:
ameinel@earthlink.net
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Model of image degradation due to wind buffeting on an extremely large telescope.
Next Document:  Measurement accuracy in control of segmented-mirror telescopes.