Sky & Telescope - March 2023 - 28

DAN CROWSON
EXPLORING NEBULAE IN MONOCEROS by Richard P. Wilds
Dust in the Southern
M
Look toward Monoceros to find an eclectic
collection of bright and dark nebulae.
y first telescope was a 2-inch f/8 Tasco refractor,
which I enjoyed pointing at different kinds of nebulae.
But the message I heard from more experienced
observers was that if I was going to see much of anything,
I'd have to spend a significant amount on a larger telescope.
I didn't have that kind of money, so instead I invested in a
40-mm Kellner eyepiece that produced a 4° field of view and
a magnification of 10×. The other half of my solution was
very dark skies deep in the Kansas Flint Hills. Together, these
delivered a limiting magnitude of around 12.8.
One winter I decided to explore the southern regions of
the constellation Monoceros, the Unicorn. Starting with
just about everybody's favorite object, the Orion Nebula
(M42), I scanned east some 8° and came to a distinctive area
28 MARCH 2023 * SKY & TELESCOPE
between the 5th-magnitude double star V696 Monocerotis
and 4th-magnitude Gamma (γ) Monocerotis. Switching to
my 20-mm Kellner eyepiece (2° field of view, magnification
20×), I was stunned by an obvious string of bright nebulosity.
Intrigued, I decided to explore the region more thoroughly.
Reflection Nebulae for Small Telescopes
On my next visit to the area, I was armed with my 12-inch
f/5 Dobsonian reflector and several eyepieces: a 32-mm
Orion Q70 (47×), 15-mm Omegon Panorama² (100×), 11-mm
Explore Scientific (131×), and 4.8-mm Televue Nagler (312×),
along with top-quality 2× and 3× Barlow lenses. This scope
and eyepiece set were a huge a step above where I started.
STEPPINGSTONE As you sweep east from the nebulae in southwestern
Monoceros, stop off at vdB 80, which is centered on two stars
(9th and 10th magnitudes). Dark clouds to the west provide a dramatic
backdrop. You'll find your target a bit less than ½° north-northeast of
6th-magnitude SAO 151573 (the bright star at the bottom of the frame).

Sky & Telescope - March 2023

Table of Contents for the Digital Edition of Sky & Telescope - March 2023

Contents
Sky & Telescope - March 2023 - Cover1
Sky & Telescope - March 2023 - Cover2
Sky & Telescope - March 2023 - 1
Sky & Telescope - March 2023 - Contents
Sky & Telescope - March 2023 - 3
Sky & Telescope - March 2023 - 4
Sky & Telescope - March 2023 - 5
Sky & Telescope - March 2023 - 6
Sky & Telescope - March 2023 - 7
Sky & Telescope - March 2023 - 8
Sky & Telescope - March 2023 - 9
Sky & Telescope - March 2023 - 10
Sky & Telescope - March 2023 - 11
Sky & Telescope - March 2023 - 12
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Sky & Telescope - March 2023 - 14
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Sky & Telescope - March 2023 - 17
Sky & Telescope - March 2023 - 18
Sky & Telescope - March 2023 - 19
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Sky & Telescope - March 2023 - 28
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Sky & Telescope - March 2023 - Cover3
Sky & Telescope - March 2023 - Cover4
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