  We demonstrate femtosecond pump-probe transient absorption spectroscopy using
a programmable dispersive filter as an ultra-fast delay line. Combined with
fast synchronous detection this delay line allows for recording of 6 ps decay
traces at 34 kHz. With such acquisition speed we perform single point
pump-probe spectroscopy on bulk samples in 80 $\mu$s and hyperspectral
pump-probe imaging over a field of view of 100 $\mu$m in less than a second.
The usability of the method is illustrated on a showcase experiment to image
and discriminate two pigments in a mixture.
