The Double Cluster (NGC 869 and NGC 884)
Characteristics:
Magnitude: 6.1
Size: About 30' each cluster
Distance: 7100 light years for NGC 869; 7400 light years for NGC 884
RA: 02h 22m 32s
Dec: 57 degrees 08' 38"
Description:
The famous Double Cluster in Perseus
was first cataloged by the Greek astronomer Hipparcos in 130 BC.
These beautiful, young open clusters are filled with hot blue stars and
are separated by only a few hundred light years from each other.
More information about the Double Cluster may be found here.
Photographic
Details:
Dates: December 3, 2011
Scope: VC200L at f6.4 on the Takahashi NJP
Mount
Autoguider: SBIG ST-402 with
60mm guidescope, focal length 227mm
Camera: SBIG ST8300 -20C
Filters: Baader RGB
filters
Exposures: This is a two frame
mosaic, with exposures for each half as follows: R = 30';
G = 30'; B = 40', all unbinned.
Post-processing:
Calibrated, aligned and
stacked in Maxim, followed
by DDP
in ImagesPlus (IP). Further processing in Photoshop CS5. Intrinsic star spikes from the
VC200L enhanced via StarSpikes Pro software.
Please
note: Graphics on this website
may not be reproduced without author permission.
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