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NGC6910
Nebulous
Star Cluster in Cygnus
Uploaded
10/16/06
This breathtaking field
combines a bright splashy open cluster - NGC6910, with an huge
structured emission nebulosity - IC1318. There is so much going
on here, lets begin with NGC6910. With an integrated visual magnitude
of 7.4, the cluster is easily seen in binoculars. In fact, half
a dozen stars can be seen visually with averted vision, since
they are sixth magnitude. The brightest stars have a strong bluish
tint, created by the B1 spectral class. The other stars in the
field range from yellows, to oranges to deep reds. No doubt the
dust is in front of many of the dimmest stars, since they appear
extremely ruddy in color, with a high B-V index.
IC1318 is a
huge object, about 2 degrees or more in size. Here we are peering
into a local bright area within that nebula. The color gradations
across the nebula are indicative of the excitation level of the
hydrogen. We can see magentas, pinks grading into deep reds and
oranges. Additionally, the area contains several interesting
dark nebula, seen here ranging in size from small round spots
to large extended rifts.
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Instrument: 12.5" f/5 Home made Newtonian
Platform: Astrophysics 1200 QMD
CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling
Guider: SBIG ST4
Exposure: Ha+RGB = 60:20:20:20
RGB Combine Ratio: 1: 1.05: 1.11
Filters: AstroDon RGB Tricolor
Location: Payson, Arizona
Elevation: 5150 ft.
Sky: Seeing FWHM = ~10 arcsec- Nasty! (Maxim DL - 10min subframe), Transparency 9/10
Outside Temperature: 45 F
CCD Temperature: -20 C
Processing Tools: Maxim DL, Gralaks Sigma, Photoshop, PixInsight, CCDOps Debloomer.
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