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We present the first morpho-kinematical analysis of the planetary nebulae Kn61 and Pa 5 and explore the nature of their central stars. Our analysis isbased on high resolution and medium resolution spectroscopic observations, deepnarrow-band imaging, and integral photometry. This material allows us toidentify the morphological components and study their kinematics. The directimages and spectra indicate an absence of the characteristic [N II] and [S II]emission lines in both nebulae. The nebular spectrum of Kn 61 suggests anhydrogen deficient planetary nebula and the stellar spectrum of the centralstar reveals a hydrogen deficient PG 1159-type star. The [O III] positionvelocity diagram reveals that Kn 61 is a closed, empty, spherical shell with athin border and a filamentary surface expanding at 67.6 km s$^{-1}$, and theshell is currently not expanding isotropically. We derived a kinematic age of$\sim$ 1.6$\times$10$^4$ yrs for an assumed distance of 4 kpc. A photometricperiod of $\sim$ 5.7($\pm$0.4) days has been detected for Kn 61, indicatingpresence of a possible binary system at its core. A possible link betweenfilamentary, spherical shells and PG 1159-type stars is noted.  The morphology of Pa 5 is dominated by an equatorial toroid and faint polarextensions. The equatorial region of this planetary nebula is expanding at 45.2kms$^{-1}$. The stellar spectrum corresponds to a very hot star and isdominated by a steep blue rising continuum and He II, Balmer and Ca IIphotospheric lines.

A spectroscopic and photometric study of the planetary nebulae Kn 61 and Pa 5