Kanzelhöhe Observatory: Instruments, Data Processing and Data Products

Kanzelh\"ohe Observatory for Solar and Environmental Research (KSO) of the University Graz (Austria) is in continuous operation since its foundation 1943. Since beginning main task was regular observation Sun full disc. In this long time span covering almost seven solar cycles, a substantial amount data collected, which made available online. paper we describe separate processing steps from acquisition to high level products different observing wavelengths. First all work out detail quality classification, important further raw images. We show how construct centre-to-limb variation (CLV) profiles remove large scale intensity variations produced by telescope optics order get images with uniform contrast. Another point an overview contrast heliographic grids overlaid. As are accessible via sources also present information about availability obtain these data. Finally, appendix, FITS headers, file naming hierarchy.