We propose a novel type of filter for multicolor imaging to improve on the photometric redshift estimation of galaxies. An extra filter - specific to a certain photometric system - may be utilized with high efficiency. We present a case study of the Hubble Space Telescope's Advanced Camera for Surveys and show that one extra exposure could cut down the mean square error on photometric redshifts by 34% over the z < 1.3 redshift range.
- Galaxies: distances and redshifts
- Galaxies: photometry
- Instrumentation: miscellaneous
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science