We report on x-ray observations of two soft x-ray transients containing neutron stars , 4U 2129+47 and EXO 0748-676 .
Our emphasis is on the quiescent properties of these sources .

The x-ray spectrum and lightcurve of the eclipsing Low-Mass X-ray Binary ( LMXB ) 4U 2129+47 was measured with the ROSAT PSPC during its current quiescent state .
The quiescent x-ray luminosity of \sim 10 ^ { 32.7 } erg s ^ { -1 } and blackbody temperature of { kT } \sim 0.21 keV are similar to other quiescent LMXB .
The quiescent x-ray light curve appears to show orbital modulation , but the statistics are insufficient to distinguish between a v-shaped partial eclipse ( as seen in the high state ) or a total , square wave eclipse .
The similarity in the luminosity and temperature to other ( non-eclipsing ) quiescent LMXB implies that the vertical structure in the disk which blocked our direct view of the neutron star in the high state has collapsed , and the neutron star is seen directly .

EXO 0748-676 was serendipitously observed with the Einstein IPC in quiescence before it was discovered as a bright transient with EXOSAT .
Our re-analysis of this quiescent observation finds { L _ { x } } \sim 10 ^ { 34.0 } erg s ^ { -1 } , and blackbody temperature of { kT } \sim 0.22 keV , again similar to other LMXBs in quiescence .