Astronomical application
Photometric Redshifts
Estimating how far away a galaxy is from its brightness in a few broad colour bands, without taking a full spectrum. It is far less precise than a spectroscopic redshift but can be done for the hundreds of millions of galaxies in an imaging survey, underpinning weak-lensing and large-scale-structure cosmology.
Highlights
- ›Redshifts for hundreds of millions of galaxies
Methods, data & targets
Used across astro-ML
Knowledge connections
- Associated withRegression
- Associated withRegression
- Associated withCosmological Redshift
- Associated withPhotometry
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.