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Abell
4
Planetary
Nebula in Perseus
Uploaded 1/1/05
This
object is extremely faint, however records as a beautiful powder
blue color. The star attraction as well is the CGCG edge on galaxy
on its north western edge that nearly touches the planetary.
While the planetary itslef is quite small at 20 arcseconds, there
are some details visible on this night of exceptional seeing.
The planetary is 17th magnitude. The field contains hordes of
faint galaxies, some of them are very interesting in shape. Most
range from 15th magnitude for the "bright" ones, to
about 19th for the fainter ones. Below I've highlighted at 100
percent scale some of the more interesting galaxies in this image.
If you have the bandwith, please look at the largest image -
the number of faint objects is astounding! |
CGCG539+91
MAG = 15.6
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MAC0243+04224A
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MAC0244++4225
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MAC0244+4228B
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MAC0244+4234B,4235,
4234A
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MAC0244+4237
MAG = 18
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MAC0246+4237A
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Instrument: 12.5" f/5 Home made Newtonian
Platform: Astrophysics 1200 QMD
CCD Camera: SBIG ST8i NABG with Enhanced Cooling
Guider: SBIG ST4
Exposure: LRGB = 60:20:20:40 (RGB Binned 2x2)
RGB Combine Ratio: 1: .8: 1.2
Filters: RGB Tricolor
Location: Payson, Arizona
Elevation: 5150 ft.
Sky: Seeing FWHM = 3.5 arcsec (Maxim DL - 10min subframe), Transparency 8/10
Outside Temperature: -5 C
CCD Temperature: -20 C
Processing Tools: Maxim DL, Photoshop, PW Pro, RW Debloomer, PixInsight.
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