The Caldwell Objects

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more erratic and ragged. How does it seem to
you? Put in high power and tap the telescope
tube. Take a few deep breaths, then tap it some
more. Doing so will help to bring out faint suns.
In fact, when the atmospheric seeing is superb,
and my oxygen levels are up, the cluster makes
me think of a white volcano experiencing a
lateral blast to the southwest. The cluster's
horizontal-branch magnitude is 15.1, meaning
that you need to be able to see stars that faint to
resolve the cluster into a swarm of stars. The
cluster's brightest stars shine around magnitude
13.4, and these are the ghostly glints that I follow
with my 4-inch, while the fainter suns form a
nervous back-
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ground light. The cluster's spectral class is G4,
and it is receding from us at 120 km per second.
NGC 6352 is a grass-grazer for many sites
across the continental United States. Theoretically
it can be seen from latitudes south of 42° N. It is
only about 1° farther south than Omega Centauri
(Caldwell 80), though it's much fainter, and
therefore a greater challenge, than that singular
cluster. Through her 20-inch Barbara Wilson saw
NGC 6352 from Columbus, Texas, "through the
tree limbs in the distance." What's the most
northerly site from which one can see this
globular? Northern-hemisphere clubs might want
to take on this fun challenge.
Before leaving the area, return to IC 4651.
Deep-Sky Companions: The Caldwell Objects