Fig. 1From: Geomagnetically conjugate observations of ionospheric and thermospheric variations accompanied by a midnight brightness wave at low latitudesLocation of Kototabang (KTB) and Chiang Mai (CMU). The geomagnetically conjugate point of Kototabang is shown by the black dot. The circles show the field of view of the all-sky imagers at KTB and CMUBack to article page