|
|
Click the image for a full
size 1.28 arcsec/pixel display (1500 x 1200)
|
Instrument |
12.5" RCOS @
~f/9 (2885 mm fl), acquired at 1.28 arcsec / pixel. Shown resampled
to 2.56 arcsec/pixel. |
|
Mount |
Paramount ME |
|
Camera |
SBIG STL-11000 w/
internal filter wheel, AstroDon 6nm Filters |
|
Acquisition Data |
3/1/2009 to 3/18/2009 Chino Valley... with CCDAutoPilot3 |
|
Exposure |
Hα
480 min. (16 x 30 min. bin 2x2)
|
|
Software |
CCDSoft,
CCDStack, Photoshop CS w/ the Fits Liberator plugin, Noel Carboni's actions
CCDStack to calibrate, register,
normalize, data reject & combine.
PhotoShop for
non-linear stretching. |
|
Comment |
North is to the left.
Thor's Helmet is about 30 light-years across. The helmet is actually
more like an interstellar bubble, blown as a fast wind from the
bright, massive star near the bubble's center sweeps through a
surrounding molecular cloud. Known as a Wolf-Rayet star, the central
star is an extremely hot giant thought to be in a brief,
pre-supernova stage of evolution. The nebula is located about 15,000
light-years away in the constellation Canis Major.
Source: NASA APOD |
════════════════════════════════════════
Click the image for a full
size 1.26 arcsec/pixel display
|
Instrument |
Celestron
C11 @ ~f/10.48 (2930 mm fl) 1.26 arcsec / pixel.
Resampled to 2.52 arcsec / pixel |
|
Mount |
Paramount ME |
|
Camera |
SBIG STL-11000 w/
internal filter wheel, AstroDon Filters |
|
Acquisition Data |
1/30/2008 & 2/5/2008
Chino Valley... with CCDAutoPilot3 |
|
Exposure |
H-Alpha
150 min. ( 5 x 30 bin 2x2) Needs about 450 min. |
|
Software |
CCDSoft,
Sigma-Clip, Photoshop CS w/ the Fits Liberator plugin, and Noel
Carboni's actions |
|
Comment |
North is to the left.
Thor's Helmet is about 30 light-years across. The helmet is actually
more like an interstellar bubble, blown as a fast wind from the
bright, massive star near the bubble's center sweeps through a
surrounding molecular cloud. Known as a Wolf-Rayet star, the central
star is an extremely hot giant thought to be in a brief,
pre-supernova stage of evolution. The nebula is located about 15,000
light-years away in the constellation Canis Major.
Source: NASA APOD |
|
