Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· arXiv e-print (arXiv:0906.2196)
· References in the article
· SIMBAD Objects (4)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
A Direct Measurement of Atmospheric Dispersion in N-band Spectra: Implications for Mid-IR Systems on ELTs
Authors:
Skemer, Andrew J.; Hinz, Philip M.; Hoffmann, William F.; Close, Laird M.; Kendrew, Sarah; Mathar, Richard J.; Stuik, Remko; Greene, Thomas P.; Woodward, Charles E.; Kelley, Michael S.
Affiliation:
AA(Steward Observatory, Department of Astronomy, University of Arizona, Tucson, AZ 85721), AB(Leiden Observatory, Leiden University, The Netherlands), AC(NASA Ames Research Center, Moffett Field, CA 94035), AD(Department of Astronomy, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455), AE(Department of Astronomy, University of Maryland, College Park, MD 20742-2421)
Publication:
Publications of the Astronomical Society of the Pacific, Volume 121, issue 882, pp.897-904 (PASP Homepage)
Publication Date:
08/2009
Origin:
UCP
Keywords:
Astronomical Phenomena and Seeing
DOI:
10.1086/605312
Bibliographic Code:
2009PASP..121..897S

Abstract

Adaptive optics will almost completely remove the effects of atmospheric turbulence at 10 μm on the Extremely Large Telescope (ELT) generation of telescopes. In this article, we observationally confirm that the next most important limitation to image quality is atmospheric dispersion, rather than telescope diffraction. By using the 6.5 m MMT with its unique mid-IR adaptive optics system, we measure atmospheric dispersion in the N band with the newly commissioned spectroscopic mode on MIRAC4-BLINC. Our results indicate that atmospheric dispersion is generally linear in the N band, although there is some residual curvature. We compare our measurements to theory, and make predictions for ELT Strehls and image FHWM with and without an atmospheric dispersion corrector (ADC). We find that for many mid-IR applications, an ADC will be necessary on ELTs.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints