Pasina nguva pashure peizvi, akabatanidza teresikopu uye prism kuti aongorore spectrum yeVenus, Mwedzi, Mars, uye nyeredzi dzakasiyana-siyana dzakadai seBetelgeuse; kambani yake yakaramba ichigadzira uye ichitengesa materesikopu anotsvaira emhando yepamusoro akavakirwa pamagadzirirwo ake epakutanga kusvikira kuvharwa kwayo muna 1884. Kugadziriswa kwe prism yakatetepa kunogumira nehukuru hwayo; prism yakakura ichapa spectrum yakadzama, asi iyo iri mairi haina kukodzera kwazvo pabasa. Nyaya iyi yakagadziriswa mukutanga kwema1900s naJoseph von Fraunhofer mugadziri wegirazi kugadzira prisms yakachena kwazvo, iyo yakamutendera kuti aongorore mitsara 574 yerima yakasviba mune inoratidzika kunge inoenderera. Nokukurumidza mushure meizvi, akabatanidza teresikopu uye prism kuti aongorore spectrum yeVenus, Mwedzi, Mars, uye nyeredzi dzakasiyana-siyana dzakadai seBetelgeuse; kambani yake yakaramba ichigadzira nekutengesa materesikopu anotsvairaira
Joseph von Fraunhofer