Study of upper atmospheric emissions using Mesosphere Lower Thermosphere Photometer (MLTP) designed at ARIES

Abstract

Mesosphere Lower Thermosphere Photometer (MLTP) has been designed at ARIES for studying mesosphere lower thermosphere coupling processes. MLTP utilizes f/2 optics with 4^o circular field of view. It has seven narrow bandwidth (FWHM ~ 4 Å) interference filters mounted on a geared filter plate housed in filter chamber under precise temperature controlled conditions. Out of these seven filters, filter at 630 nm is meant to monitor ionospheric F- region airglow emission due to atomic oxygen. MLTP has been successfully installed and made operational at Space Weather Laboratory of ARIES.