Fig. 12From: Measurement of thermospheric temperatures using OMTI Fabry–Perot interferometers with 70-mm etalonRelation of temperature and peak count (per pixel) estimated from interference fringes. This was obtained at a, e Tromsø, b, f Chiang Mai, c, g Kototabang and d, h Darwin for the same interval of Fig. 10. Dashed line shows 257 counts per pixel which is three times of the readout noise of the CCD cameraBack to article page