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M22
Region
Globular
Cluster in Sagittarius
Uploaded
8/7/05
| An
exciting rich field of both dark nebulosity, star clouds and
globular clusters. Just above center is M22, a large 5.2 magnitude
object spanning half a degree in width. Most of the brighter
stars in this cluster are 10.7 magnitude, and the fainter members
are near 14.2 and some fainter. Off to the right is M28, a 7th
magnitude and much smaller 13 arcminute globular cluster that
is more concentrated in the center. The dark nebula Barnard 98
is near the bottom, and two additional globulars NGC6642 and
NGC6638 are seen as stellar images at this scale. |
Instrument: 8" f/1.5 Celestron Schmidt Camera
Platform: Homemade GEM
Film: Kodak Supra 400
CCD Autoguider: ST4
Exposure: 2x8mins
Filters: NONE
Location: Happy Jack, Arizona
Elevation: 6800 ft.
Sky: Seeing 9/10, Transparency 8/10
Outside Temperature: 45 F
Processing: Photoshop, PixInsight Pro.
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