A KINEMATICAL INVESTIGATION OF THE BIPOLAR PLANETARY-NEBULA NGC-650-1

High spatial and spectral resolution observations of the H alpha, [N I I]6584 Angstrom and [O III]5007 Angstrom emission line profiles from t he planetary nebula NGC 650-1 have been obtained with the Isaac Newton and William Herschel Telescopes using the Manchester echelle spectrom eter. These observations, and additional narrow-band images obtained u sing the San Pedro Martir telescope, are compared with synthesised ima ges and spectra based on the generalised interacting stellar winds (GI SW) models (involving a slow wind strongly concentrated towards the eq uatorial plane) and a good correspondence is found, confirming NGC 650 -1 to be a bipolar wind-driven bubble orientated at an inclination of similar to 75 degrees with the NW lobe pointing towards the observer. There is a bright central ring with two attached (inner) lobes, which show typical expansion velocities of similar to 43 km s(-1) and simila r to 60 km s(-1) respectively. Outside the inner lobes are the fainter outer lobes which are observed to have a very low expansion velocity (similar to 5 km s(-1)), and which have on one side (SE) a polar cap w hich shows higher velocities again (similar to 20 km s(-1)). The natur e of these outer lobes remains unclear. The origin of discrepancies be tween the observations and models are discussed in some detail.