We present VI photometry of the metal-poor inner halo globular clusters NGC 6293 and NGC 6541 using the planetary camera of the WFPC2 on board Hubble Space Telescope ( HST ) .
Our color-magnitude diagrams of the clusters show well-defined blue horizontal branch ( BHB ) populations , consistent with their low metallicities and old ages .
NGC 6293 appears to have blue straggler stars in the cluster ’ s central region .
We discuss the interstellar reddening and the distance modulus of NGC 6293 and NGC 6541 and obtain E ( B - V ) = 0.40 and ( m - M ) _ { 0 } = 14.61 for NGC 6293 and E ( B - V ) = 0.14 and ( m - M ) _ { 0 } = 14.19 for NGC 6541 .
Our results confirm that NGC 6293 and NGC 6541 are clearly located in the Galaxy ’ s central regions ( R _ { GC } \leq 3 kpc ) .
We also discuss the differential reddening across NGC 6293 .
The interstellar reddening value of NGC 6293 appears to vary by \Delta E ( B - V ) \approx 0.02 – 0.04 mag within our small field of view .

The most notable result of our study is that the inner halo clusters NGC 6293 and NGC 6541 essentially have the same ages as M92 , confirming the previous result from the HST NIC3 observations of NGC 6287 .