<page_title> Hubble Ultra-Deep Field </page_title> <section_title> Observations </section_title> <table> <cell> F435W <col_header> Filter </col_header> </cell> <cell> 435 nm <col_header> Wavelength </col_header> </cell> <cell> F606W <col_header> Filter </col_header> </cell> <cell> 606 nm <col_header> Wavelength </col_header> </cell> <cell> F775W <col_header> Filter </col_header> </cell> <cell> 775 nm <col_header> Wavelength </col_header> </cell> <cell> F850LP <col_header> Filter </col_header> </cell> <cell> 850 nm <col_header> Wavelength </col_header> </cell> </table>
Four filters were used on the ACS, centered on 435, 606, 775 and 850 nm.