|
|
Click the image for a larger
and wider
view. (2400 x 1800 - 1.02 MB)
|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at
2.83 and 3.78 arcsec/pixel. |
|
Mount |
Losmandy G11 with Gemini L4 v1.0 |
|
Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using an AstroDon Ha and Baader LRGB filters. |
|
Acquisition Data |
4/20/2015 to 5/20/2015
Chino Valley, AZ |
|
Exposure |
|
Lum |
280 min. (40 x
7 min.) binned 1x1 |
|
Ha |
210 min. (14 x
15 min.) |
|
Red |
105 min. (15 x
7 min.) " |
|
Green
|
140 min. (20 x 7 min.)
" |
|
Blue
|
196 min. (28 x 7 min.)
" |
eXcalibrator RGB
ratios are 1.00, 1.15 & 1.41 |
|
Software |
-
CCDSoft, CCDStack,
PixInsight & Photoshop CS6.
-
eXcalibrator
v4.30 for (g:r) color balancing, using 129 stars from the
SDSS-DR9 database.
-
CCDStack to
calibrate all sub exposures, register and stack the color and create the RGB image.
-
PixInsight
processing includes registering and stacking the luminance,
gradient repair, non-linear stretching with HistogramTransformation
and HDRMultiscaleTransform to enhance the detail of the
galaxies.
-
PhotoShop for
creating the LRGB and final touch up.
-
Noiseware 5, a
PhotoShop plug-in.
|
|
Comment |
North is to the
top
Discovered by Pierre
Méchain, in 1781, Messier 106 (also known as NGC 4258) is a spiral
galaxy in the constellation Canes Venatici. M106 is at a distance of
about 23 million light-years from Earth. It is also a Seyfert II
galaxy, which means that due to x-rays and unusual emission lines
detected, it is suspected that part of the galaxy is falling into a
supermassive black hole in the center.
NGC 4248, to the
right, at a distance of about 21 million light-years is a possible
companion galaxy. |
|
