Comparison(fizeau, Michelson) Fizea u Miche son nte rfe rometer Interferomete er Produce a dir ect im age o f its Takes a sub set of u-v po ints targ et( Full Inst ant u-v c over age obtaine d a peri od of time pr ov id ed) Wide ang le(field) of view Ast rome try. im aging app lications Nulling Inter from etry R api dly cha nging t arge ts T arg et unc han ged (Terre strial, Earth objects) (Ast ron omi cal objects) Takes t he comb ine d sci en ce Me as ure s po ints in Fourier light from all the ap ertures and tran sf orm of ima ges = Inverse focuses it into C CD FFT ne eded U-V re so lution dep end s on b oth Angula r re so lution de pend s the separa tion and the size of solely on the separa tion of a per ture s aperture s Optima I Con figuration The angul ar res olution im proves Golay(m inim um aper ture size) as the sep ara tion incre as es Chart: 6 16.684 Space Systems Product Development February 13, 2001 MIT Space Systems Laboratory16.684 Space Systems Product Development Chart: 6 February 13, 2001 MIT Space Systems Laboratory Comparison (Fizeau, Michelson) Fi zea u Int erferomet er Miche lson Inte rfe romete r Pro duce a dir ec t im age o f its targ et (Ful l Instan t u- v c over age pr ov ided) Takes a sub se t o f u- v po ints obtaine d a peri od o f tim e. Wide ang le(f ield) of view im aging app lications Ast rome try, Nulling Interferom etry Rapidly Cha nging t arge ts (Terre strial, Ea rth Objects) Targ et u nc han ged (Ast ron omi cal Objects) Takes t he comb ine d sci en ce ligh t from all the ap erture s an d focuses it into C CD Me as ure s po ints in Fourier tran sform of ima ges => Inver se FFT ne eded U- V re so lution dep end s on b oth the separa tion and the size of aperture s Angula r re so lution de pend s solel y on the separa tion of aperture s Optima l Con figura tion: Golay (m inim um aper ture size ) The angul ar res olution im pro ves as t he sep ara tion incre as es