Once you’ve found M13, look ever-so-slightly less
than 0.5° northeast for spiral galaxy NGC 6207.
Many low-power eyepieces show both objects in
the same field of view. Through an 8-inch telescope,
you’ll see a magnitude 11.6 oval a bit more than
twice as long as it is wide. DIETMAR HAGER
The Turtle Nebula (NGC 6210) is a planetary nebula
that measures 14" across. But even through a small
telescope, you can easily identify this planetary’s
light blue-green, turtle-shaped, magnitude 8.8 disk.
Its high surface brightness lets you really crank up
the magnification. CHRIS SCHURGlobular cluster NGC 6229 glows at magnitude 9.4
and measures 4.5' across. At low to medium
magnifications, you’ll see a nice triangle formed by
the cluster and two 8th-magnitude stars. NGC 6229
is 100,000 light-years away, so an 8-inch scope
shows just an unresolved glow with an irregular
outline. MARTIN C. GERMANORasalgethi (Alpha [α] Herculis) is a binary that
combines stars with magnitudes of 3.5 and 5.4.
They’re separated by 4.6". Because of a wonderful
contrast effect, the secondary appears olive-green.
The brighter primary is yellow with a trace of
orange. JEREMY PEREZ
Globular cluster M92 is this constellation’s other
Messier object. It has a diameter of 14' and a
magnitude of 6.5. Nearly as bright as M13, M92
easily resolves with small telescopes. Through an
8-inch scope, the core appears concentrated and
huge, surrounded by an outer halo of myriad faint
stars. BOB FERAThe stellar pair called 95 Herculis lies in a no-man’s
land where few bright stars abound. One way to
locate it is to look a bit more than 13° northeast of
Rasalgethi. The (barely) brighter of these two stars
(magnitude 5.0) glows yellow, and its companion
(magnitude 5.1) is white. JEREMY PEREZWWW.ASTRONOMY.COM 53