|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at
4.30 and 9.16 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 |
12/23/2014 to
2/9/2015 Chino Valley, AZ... with CCDSoft & CCD Commander |
|
Exposure |
|
Lum |
399
min. (57 x 7 min. bin 1x1) |
|
Red |
119 min. (17 x
7 min. bin 1x1) |
|
Green |
154 min. (22 x 7 min. bin 1x1)
|
|
Blue
|
175 min. (25 x 7 min. bin 1x1)
|
|
Nebula Core Exposures |
|
Lum |
15
min. (30 x 30 sec. bin 1x1) |
|
RGB |
30 min. (20 x
30 sec. each bin 1x1) |
RGB combine
ratios were 1.0, 1.21 & 1.41 |
|
Software & Processing Notes |
-
CCDSoft, CCDStack,
PixInsight & Photoshop CS6.
-
A standard image-train
calibration was used, as determined by
eXcalibrator v4.30, and then adjusted for altitude
extinction.
-
CCDStack to
calibrate both luminance and color exposures, register the color
exposures and creating the two RGB images.
-
PixInsight
processing includes registering the luminance
exposures and creating the two Lum images. HDRComposition
was use to combine the long and short exposures.
Non-linear stretching was done with HistogramTransformation and
MaskedStretch. HDRMultiscaleTransform and
LocalHistogramEqualization were used to enhance the detail.
-
PhotoShop for the
LRGB combine & final touch-up.
-
Noiseware 5, a
PhotoShop plug-in.
|
|
Comment |
North is to the top.
The Orion Nebula (also
known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated
south of Orion's Belt. It is one of the brightest nebulae, and is
visible to the naked eye. M42 is located at a distance of 1,270±76
light years and is the closest region of massive star formation to
Earth. The M42 nebula is estimated to be 24 light years across.
Source:
Wikipedia |
