Nooca ugu badan ee balaadhinta iftiinka waxaa laga soo qaatay teleskoobka Galilean kaas oo badanaa leh hal muraayad oo taban iyo hal muraayad oo wax soo saar togan ah. Muraayadda wax soo gelinta waxay soo bandhigaysaa diiradda iftiinka dalwaddeed ee wax soo saarka. Saamiyada ballaarinta hooseeya, teleskoobka Galilean waxaa badanaa la adeegsadaa sababtoo ah fududaanta, cabbirka baakadka yar iyo kharash yar. Balaadhiyeyaasha iftiinka waxaa badanaa loo isticmaalaa in lagu weyneeyo dhexroorka laysarka kaas oo dib loogu soo celinayo cabbir goobeed oo yar.
Wavelength waxay diiradda saareysay bixinta alaabada indhaha ee saxsan ee sare muddo 20 sano ah