  Results of an oscillation analysis of two solar quiescent prominences (QPs)
observed with two quite different telescopes and spectrographs are presented.
For the QP of 23 September 2009 we used data from the Multi-channel Subtractive
Double Pass Spectrograph (MSDP) installed in Bia{\l}k\'ow Observatory which
provides H{\alpha} two dimensional spectra with a higher spatial resolution but
with a smaller spectral resolution. The other QP was observed on 20 August 2010
with the Ond\v{r}ejov Multichannel Spectrograph (HSFA-2) in 5 spectral lines
and the slit-jaw imaging system simultaneously. Doppler velocity was analyzed
in the both the QPs. In addition, using MSDP possibilities, for the QP of 23
September 2009 we analyzed also movements in the plane of sky. In both the QPs
we found oscillations with a small amplitude (less than 0.3 km/s) and with a
medium period (approx. a dozen of minutes) which occurred simultaneously. We
discuss results reported by other authors.
