|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at
2.88 and 9.24 arcsec/pixel. |
|
Mount |
Losmandy G11 with Gemini L4 v1.0 |
|
Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using Baader LRGB filters. |
|
Acquisition Data |
4/3/2013 to 6/11/2013
Chino Valley, AZ |
|
Exposure |
|
Lum |
400 min. (40 x
10 min.) binned 1x1 |
|
Red |
420 min. (28 x
15 min.) " |
|
Green
|
420 min. (28 x 15 min.)
" |
|
Blue
|
540 min. (36 x 15 min.)
" |
|
|
Software |
-
CCDSoft, CCDStack,
PixInsight & Photoshop CS6.
-
eXcalibrator
v4.30 for (g:r) color balancing, using 168 stars from the
SDSS-DR9 database.
-
CCDStack to
calibrate, register and stack the sub exposures and create the
RGB image.
-
PixInsight
processing includes gradient repair, non-linear stretching with
HistogramTransformation and
selective use of
HDRMultiscaleTransform to enhance the detail individual
galaxies.
-
PhotoShop for
combining the images with varying galaxy detail, creating the
LRGB and final touch up.
|
|
Comment |
North is to the top.
The Coma Cluster (Abell
1656) is a large cluster of galaxies that contains over 1,000
identified galaxies. Abell 1656 and the Leo Cluster (Abell 1367) are
the major components of the Coma Supercluster. At a distance of 320
million light years, the apparent extent of the cluster is three
times larger than the Moon, half of which is shown in this image.
The central region is dominated by two giant elliptical galaxies...
NGC 4874 and 4889. |
