THE USE OF A PRESSURE-SCANNED FABRY-PEROT INTERFEROMETER FOR TWILIGHT SKY AND ZODIACAL LIGHT OBSERVATIONS D. CLARKE, P. H. HINDLE, N. K. REAY et J. RING J. Phys. Colloques, 28 C2 (1967) C2-294-C2-300 DOI: 10.1051/jphyscol:1967256