NGC 869 Double CLuster 10.28.2007
Image Capture Details

Optics:  Meade LX200 14 GPS @ F/2 Hyperstar
Mount: Meade LX200
Camera: Canon 350XT
Filters: Astronomik LPS
Focal Ratio:  F/2 Using HyperStar
Distance:  7000 Light Years

Guiding: None

Exposure:
200 X 30Seconds = 100 Minutes
Time: 10:05- 11:35PM EST
Location: Waldwick, NJ
© 2008 David A. Trapani
MetropolitanSkies.com
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The famous double cluster in Perseus was known
in antique times (probably even pre-historically),
and first cataloged by the Greek astronomer
Hipparcos.

Both clusters are situated in the Perseus OB 1
association, and also only a few hundred
light-years appart, at a distance of over 7000 light
years. They are both quite young: h is listed at 5.6,
chi at 3.2 million years (Sky Catalog 2000); their
hottest main sequence stars are of spectral type
B0. They are approaching us at 22 (h) and 21 (chi)
km/sec, respectively.

1 http://www.seds.org/messier/xtra/ngc/n0869.html