Page 87 - All About Space 68 - 2017 UK

STARGAZER
Deep sky challenge

Messier 71 The Cocoon Nebula (IC 5146)

02 01 Messier 39
Use a low-power, wide-field eyepiece to get all the
03 1 stars of this very open cluster into view. Located
a touch north of the bright star Deneb, the cluster is
larger than the full Moon at an apparent size of 32 arc
minutes across and has a relatively loose appearance.

The Cocoon Nebula (IC 5146)
A challenging object visually due to its dim
2 magnitude of 10, you’ll ideally need a telescope
that has an aperture of at least six inches; one of the
Cygnus most important factors in observing this nebula is
dark skies, untouched by light pollution.
North America Nebula (NGC 7000)
An expansive region of gas and dust that can be
3 picked up using 7x50 binoculars; it is, however,
best enjoyed using a wide-field telescope at lower
power, equipped with UHC or OIII filters, which will
Pegasus make the nebula much easier to discern.
Messier 71
This is a relatively young cluster of stars
4 located within the Summer Triangle asterism,
Vulpecula formed by the bright stars Deneb, Altair and Vega.
You’ll require a scope with at least a medium-sized
aperture to begin resolving the stars in this globular.
NGC 6823
05 This emission nebula surrounds open star
5 cluster NGC 6823 in the constellation of
Vulpecula. The bright-blue stars are easy to see, but
04 the nebula is a visual challenge for those without at
06 least a medium-sized telescope or larger.
Sagitta Great Pegasus Cluster (Messier 15)
Messier 15 is 33,600 light years from Earth and
6 is one of the oldest examples of these objects at
12 billion years. Its magnitude of 6.2 makes it an easy © Luc Viatour; NASA; ESA
Equuleus Delphinus target through binoculars and small telescopes as a
fuzzy patch of light.

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