2.2.2 spase://SMWG/Instrument/OBSPM/OBSPM OBSPM Heliograph 2012-04-24T00:00:00Z The OBSPM (OBservatoire Solaire de Paris a Meudon) heliograph provides 3 images every 1.5 minute of the solar disk in the H alpha line at 3 wavelengths: line core and at 0.5 Angstroms from it on each side. A Lyot filter with a 0.5 Angstrom bandpass is used. The objective is to detect and observe solar eruptions at a high temporal cadence. spase://SMWG/Person/Jean-Marie.Malherbe GeneralContact spase://vspo/Instrument/172 Imager OBSPM Heliograph spase://SMWG/Observatory/OBSPM