The Design and Construction of the Second-Generation Optimized Fabry-Perot Doppler Imager (SOFDI)
Abstract
The funding provided by the Air Force DURIP award that was provided in March of 2002 has been used to build a portable multi-purpose state-of the-art triple etalon Doppler imaging Fabry Perot interferometer, which has the name of SOFDI. The application of this instrument is primarily to measure automatically winds and temperatures in the upper atmosphere for the mesosphere and thermosphere regions for both nighttime and daytime periods. In these two atmospheric regions the airglow emissions provided by 01 atoms at 630 nm, 011 ions at 732 nm, and OH molecules (molecular bands) make possible the monitoring of temperature and winds during the night simultaneously with an accuracy of the order of 5 ms 1 in five minutes. Daytime measurements of thermospheric winds using the 630 nm emission of 01 at a slower rate of observation and with somewhat less accuracy is the main goal of the application of this instrument. Because of the demanding nature of this application, a number of significant innovations was introduced in the design of SOFDI. These include simultaneous measurements of four fields of view that are obtained by four separate articulated telescopes, the use of the QuadCLIO and the QuadCLIO extender(CLIO means circle to line interferometer optic) to image each each high resolution spectrum onto a quadrant of the CCD camera detector.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 16, 2004
- Accession Number
- ADA420459
Entities
People
- J. W. Meriwether
Organizations
- Clemson University