Finding M22
Cluster
The
M35
Cluster
sits
at
the
base
of
the
Milky
Way
looking
south.
It
sits
snuggly
just
below
and
to
the
east
of
the
Constellation
of
Ophiuchus.
Other
excitements
in
this
area
include
M28,
Trifid
Nebula
M20,
Lagoon Nebula M8 and
slightly
to
the
north
sits
the
Omega
Nebula
M17
and
the
Eagle
Nebula M16.
M22 Globular
Cluster
Description: Globular Cluster
Common Name: M22
Messier Catalogue: 22
NGC: 6656
Constellation: Sagittarius
Size: 32.0 Arc Minutes
Visual Magnitude: +5.09
Distance: 10,600 Light Years
June - August
Imaging
Like
most
clusters
this
one
was
simple
to
image.
If
you
are
using
an
Alt-Az
tracking
mount
then
you
will
easily
get
this
cluster
looking
nice
in
exposures
of
20
to
30
seconds.
You
will
need
to
take
longer
exposures to draw out some of the fainter stars.
Image Specification
Date Taken: 03/08/2019
Dark Site?: Yes
Telescope: Altair StarWave 70ED
Diameter: 70mm
Focal Length: 420mm
Reducer/Flattener?:
Barlow: N/A
Mount: iEXOS 100 PMC-Eight
Guided?: Yes
Guiding Software: PHD2
Filter: Semi-APO
Camera: Canon EOS 1000D
ISO: 400
Video: N/A
Light Frames: 11 x 180 Seconds
Total Exposure: 33 minutes
Dark Frames:
Bias Frames:
Flat Frames:
Capture Program: BackYardEOS
Stacking program: DeepSkyStacker
Post Processing: PhotoShop CS3
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