Low- and high-resolution spectra of the planetary nebulae HuDo 1 and HuBi 1 , around [ WC-late ] stars , are analyzed .
The objects belong to the galactic disk , with heliocentric radial velocities of - 12 km s ^ { -1 } ( HuDo 1 ) and 57 km s ^ { -1 } ( HuBi 1 ) .
C ( H \beta ) reddening values are of 2.04 for HuDo 1 and 1.22 for HuBi 1 .
Plasma line ratios are used to estimate physical conditions and abundances .
We find \log ( O/H ) +12 = 8.43 and 8.57 , and N/O = 0.2 and 0.1 for HuDo 1 and HuBi 1 respectively .
HuBi 1 is the only PN excited by a very late [ WC ] star showing intense nebular \ion He1 recombination lines .
From the stellar lines we derive a [ WC 10 ] type for both stars , although HuBi 1 central star should be slightly hotter for providing a large amount of He ^ { 0 } ionizing photons .
Nebular and stellar parameters of HuDo 1 and HuBi 1 are compared with those of other [ WC 10 ] objects , concluding that the stars of HuDo 1 and HuBi 1 should be intrinsically fainter .
In particular HuBi 1 seems a low-density evolved nebula around a low-mass slowly-evolving star .