NGC 1494--A few bright, compact knots appear as well as numerous fainter knots
(probably young clusters). The brightest knot appears to lie in the center of
the diffuse light distribution, and therefore may be identified as the nucleus.
Jan 31/Feb 1, 1979
103aO + GG385
The surface brightness of the disk and arms
in NGC 1494 is higher than in NGC 45 shown on
the preceding panel. The redshift is larger, at
v_o = 957 km/s, consistent with the lack of resolution
into individual stars at a level brighter than
about V = 22. Brightest stars begin to resolve at
about this level, but confusion with the numerous
HII regions that are both brighter and fainter
than this level is serious; the two types of objects
must be discriminated from one another by
standard methods before their photometry can
No nucleus or central bulge is seen on the
available plate material. The arms are moderately
well formed and are easily traced; hence the
relatively high luminosity classification is
Overexposed center (and bar?), very knotty arms.
Three prominent HII regions may resolve at 1-2 arcsec
seeing with adequate scale.
Thin arms, but semi-chaotic central region.
No bright nucleus.
Many ill-definite faint arms.