Sky & Telescope - September 2022 - 58

SEPTEMBER 2022 OBSERVING
Going Deep by Alan Whitman
O
Explore the North America
and Pelican Nebulae
Spend some time in the Celestial Swan with a selection of
captivating targets these late summer nights.
ver the years I've observed
NGC 7000, the North America
Nebula, in Cygnus many times. I've
used a variety of instruments and have
even seen it with my unaided eyes. To
me, without optics it has a distinctive
triangular shape, but I've since learned
that such claims are controversial. Some
observers suggest that what's visible is
the associated star cloud outlined by
dark nebulae, and not the nebulosity.
Tony Flanders, a Sky & Telescope contributing
editor, investigated this and notes,
" From my rural backyard I can sort of
see the North America Nebula nakedeye
without filters, but I find it impossible
to separate the nebula from the
adjacent, extremely bright star cloud.
When I hold my O III filter in front of
my left eye and my UHC [Ultra High
Contrast] filter in front of my right eye
(or vice versa), NGC 7000 becomes an
easy naked-eye object under Bortle 4
skies or better. The filters almost obliterate
the star cloud, leaving the nebula
itself quite obvious. "
I've also enjoyed many unfiltered
views with my 7×50 binoculars and 4.2inch
Astroscan reflector while sweeping
the Milky Way. I waxed lyrical while
observing it and the adjacent Pelican
Nebula, IC 5070, with S&T Consulting
Editor Gary Seronik's 6-inch f/6
Newtonian at 23× (yielding a giant 3°
field of view) and an Ultrablock filter.
But this was at the 2000 Mount Kobau
Star Party, and others were sharing the
eyepiece, so I had no opportunity to
make the detailed notes required for
an article. But I didn't forget that sight,
and I knew that one day I'd eventually
return to that part of the sky.
DIVE IN William Herschel discovered NGC 7000 in 1786. German astronomer Max
Wolf originally dubbed it the America Nebula, but it was E. E. Barnard who eventually
bestowed upon it the name by which we know it today. It took more than 100 years after
Herschel's discovery of NGC 7000 for the Pelican Nebula to be recognized, which it was
when the Reverend Thomas Espin detected it in 1899.
58 SEPTEMBER 2022 * SKY & TELESCOPE
Nosing Around the North
America Nebula
On five nights in July 2020, I used my
backyard observatory's 16-inch f/4.5
Newtonian on the North America
and Pelican Nebulae at 114× with a
UHC filter. I worked from charts 1126
and 1106 in the Millennium Star Atlas
(MSA), my favorite resource for observing
emission and dark nebulae. If you
don't have the MSA, you can use the
finder chart at right. I chose the UHC
FIONA MORRIS

Sky & Telescope - September 2022

Table of Contents for the Digital Edition of Sky & Telescope - September 2022

Contents
Sky & Telescope - September 2022 - Cover1
Sky & Telescope - September 2022 - Cover2
Sky & Telescope - September 2022 - 1
Sky & Telescope - September 2022 - Contents
Sky & Telescope - September 2022 - 3
Sky & Telescope - September 2022 - 4
Sky & Telescope - September 2022 - 5
Sky & Telescope - September 2022 - 6
Sky & Telescope - September 2022 - 7
Sky & Telescope - September 2022 - 8
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