|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. The Zoomify
image scale is 3.15 to 7.24 arcsec / pixel. |
|
Mount |
Losmandy G11 with Gemini L4 v1.0 |
|
Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using Astrodon filters. |
|
Acquisition Data |
12/11/2012 to 2/5/2013 Chino Valley, AZ... with CCDAutoPilot5
& CCDSoft. Off-axis guided. |
|
Exposure |
|
Lum |
450 min. (45 x
10 min. bin 1x1) |
|
Red
|
100 min. (10 x 10 min.
bin 1x1)
|
|
Green |
150
min. (15 x 10 min. bin 1x1) |
|
Blue |
180
min. (18 x 10 min. bin 1x1) |
Click
here for the narrowband color-mapped image.
Click
here for the Ha filtered image. |
|
Software |
-
CCDSoft, CCDStack,
Photoshop CS6, PixInsight and Noel Carboni's actions.
-
CCDStack to calibrate,
register, normalize, data reject, combine the sub exposures.
-
eXcalibrator v3.1 for
(g-r) color balancing, using 857 stars from the SDSS-DR8 database.
-
PixInsight for
gradient removal and the
initial non-linear stretching.
-
PhotoShop for color
combine & final touch-up.
-
Noiseware Pro, a PhotoShop plug-in.
|
|
Comment |
North is to the right
The Cone Nebula, located about 2700 light years away, was discovered
by William Herschel on December 26, 1785. Features in the image
include red emission from diffuse interstellar hydrogen and wispy
filaments of dark dust. The dark Cone Nebula region clearly contains
much dust which blocks light from the emission nebula and open
cluster NGC 2264 behind it. One hypothesis holds that the Cone
Nebula is formed by wind particles from an energetic source blowing
past the Bok Globule at the head of the cone.
Source: NASA
APOD.
|
