NGC869 & 884 - The Double Cluster
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Landgraaf
TMB 80/480 @ f4.8 (TeleVue TRF2008 FR&FF)
Baader UHC-S
Losmandy G-11
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Camera :
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Atik 1HS, Vixen VMC110L & Guidemaster
Canon 350D
12 x 300 sec @ ISO800
1h
Canon 350D
12 x 300 sec @ ISO800
1h
[ Other resolutions/versions - or click the image for maximum resolution available ]
Higher Resolution 1024 x 768 Pixel (427 kB)
Maximum Resolution 1280 x 960 Pixel (611 kB)
Additional notes and remarks:
Object info
This famous double cluster was already known in antique times and was first cataloged by the Greek astronomer Hipparchus in 130 B.C. Both clusters are visible with the unaided eye between the constellations of Perseus and Cassiopeia as a somewhat bright patch vaguely resembling the number 8. The clusters are at a distance of 7.100 & 7.400 light years and are only a few hundred light years apart.
Processing
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Previous versions
Sep 09, 2006 - 900 x 675 Pixel (310 kB)
Optics : GSO 8" f4 Newton, MPCC + Baader UHC-S
Mount : Losmandy G-11 + Canon 350D
Exposure : 20 x 180 sec @ ISO800 = 1h
