The following features of 3C353 are evident from Figure 1:
The jet and counterjet, which comprise about 1% of the total
emission from the source, are both well-collimated.
Both jets brighten significantly beyond ~10/h kpc
from the nucleus.
Both jets contain knots of enhanced
brightness within more diffuse, roughly parallel-sided (i.e.,
Both lobes are highly filamentary. Filamentation
in the West lobe confuses the outer path
of the counterjet, so it is hard to identify which, if any, features
in the outer lobe might continue the counterjet.
The integrated flux density of the jet is between two and three times
that of the unambiguous segment of the counterjet.
The jet, which is relatively straight along
p.a. 73.8° for most of its length, can be traced all the way
from its first bright knot to a well-defined, oblique hot spot
that has a prominent arc of emission on its
In contrast, the counterjet first appears at p.a. ~78.5°,
then deflects to p.a. ~85° before reaching a complex ring
of emission containing much substructure but no well-defined ``hot
Although the jet is straight, its centerline does not point to
the nuclear source; its north edge aligns
better with the nucleus.