Fig. 4From: Measurement of thermospheric temperatures using OMTI Fabry–Perot interferometers with 70-mm etalonA cross section of a one-night averaged interference fringe. This was obtained by FP02 for 630.0 nm on December 24, 2010, at Chiang Mai, Thailand. The crosses indicate the peak locations identified for each fringe that are used to determine the center of the circular fringesBack to article page