|
|
Click the image for a full
size 3.5 arcsec/pixel display (1800 x 1200)
|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 3.5 arcsec/pixel. Shown
resampled to 8.4 arcsec/pixel. |
|
Mount |
Paramount ME |
|
Camera |
SBIG STL-11000 w/
internal filter wheel, AstroDon 6nm Filters |
|
Acquisition Data |
1/17/20089to 1/30/2009 Chino Valley... with CCDAutoPilot3 |
|
Exposure |
Ha 480 min.
(16 x 30 min. bin 1x1)
Click
here for the narrow band color mapped
image.
Click here for the natural color image. |
|
Software |
CCDSoft,
CCDStack, Photoshop CS w/ the Fits Liberator plugin, Noel Carboni's actions
and Russell Croman's GradientXTerminator
CCDStack to calibrate, register,
normalize, data reject & combine.
PhotoShop for
non-linear stretching. |
|
Comment |
North is to the top.
IC 443, the Jellyfish
Nebula, is a Galactic supernova remnant, in the constellation
Gemini, that
occurred 8,000 years ago. It is one of the best studied cases of
supernova remnants, interacting with surrounding molecular clouds.
IC 443 spans about 65 light-years at an estimated distance of 5,000
light-years. |
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